mirror of
https://github.com/ClusterCockpit/cc-backend
synced 2026-03-24 00:27:29 +01:00
Jan Eitzinger
38f75ceb9e
Entire-Session: 0696ef34-7ff1-4c1e-9103-ffbca94f3ebd Entire-Strategy: manual-commit Entire-Agent: Claude Code Ephemeral-branch: entire/01ec70b-e3b0c4
68 lines
170 KiB
JSON
68 lines
170 KiB
JSON
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{"parentUuid":null,"isSidechain":false,"type":"progress","data":{"type":"hook_progress","hookEvent":"SessionStart","hookName":"SessionStart:clear","command":"entire hooks claude-code session-start"},"parentToolUseID":"942a0390-fc45-4306-bbc7-e95072dd4702","toolUseID":"942a0390-fc45-4306-bbc7-e95072dd4702","timestamp":"2026-03-23T05:19:53.462Z","uuid":"e39beb48-3ef7-4304-9e25-146beafa1a86","userType":"external","entrypoint":"cli","cwd":"/Users/jan/prg/ClusterCockpit/cc-backend","sessionId":"0696ef34-7ff1-4c1e-9103-ffbca94f3ebd","version":"2.1.80","gitBranch":"hotfix","slug":"agile-napping-otter"}
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{"parentUuid":"e39beb48-3ef7-4304-9e25-146beafa1a86","isSidechain":false,"promptId":"4c9038e2-c763-4f23-82bf-037c28776776","type":"user","message":{"role":"user","content":"Implement the following plan:\n\n# Fix: Parquet Row Group Limit in Metric Store Archiving\n\n## Context\n\nThe cleanup archiver creates one parquet file per cluster and calls `writer.Flush()` after every checkpoint file, creating one row group per checkpoint. The parquet-go library hard-limits row groups to 32767 per file. Large clusters like \"fritz\" with many hosts and multiple checkpoint files per host exceed this limit, causing: `flushing parquet row group: the limit of 32767 row groups has been reached`\n\n## Root Cause\n\nIn `WriteCheckpointFile()` (`parquetArchive.go:115`), `w.writer.Flush()` is called after **every** checkpoint file. For a cluster with e.g. 1000 hosts × 40 checkpoint files = 40,000 flushes → 40,000 row groups → exceeds 32767.\n\n## Fix\n\nMove the `Flush()` out of `WriteCheckpointFile` and into the caller, flushing **once per host** instead of once per checkpoint file. This gives at most one row group per host (e.g. ~3000 for a large cluster), well within the limit.\n\nThis also improves compression — all checkpoint data for a single host is now in one row group with highly repetitive column values.\n\n### File 1: `pkg/metricstore/parquetArchive.go`\n\n1. **Remove `Flush()` from `WriteCheckpointFile`** (lines 115-117) — keep only the batch-drain logic\n2. **Add `FlushRowGroup()` method** — wraps `w.writer.Flush()` for the caller to invoke explicitly\n\n### File 2: `pkg/metricstore/archive.go`\n\n3. **Call `FlushRowGroup()` once per host** in the `for r := range results` loop (after all checkpoint files for that host are written), instead of relying on per-checkpoint flushes:\n\n```go\nfor r := range results {\n if writeErr == nil {\n for _, cf := range r.checkpoints {\n if err := writer.WriteCheckpointFile(cf, cluster, r.hostname, \"node\", \"\"); err != nil {\n writeErr = err\n break\n }\n }\n if writeErr == nil {\n if err := writer.FlushRowGroup(); err != nil {\n writeErr = err\n }\n }\n }\n toDelete = append(toDelete, deleteItem{dir: r.dir, files: r.files})\n}\n```\n\n## Verification\n\n- `go build ./pkg/metricstore/...` — compiles\n- `go test ./pkg/metricstore/...` — existing tests pass\n- Manually verify: for a cluster with N hosts, the parquet file should contain N row groups (not N × checkpoints-per-host)\n\n\nIf you need specific details from before exiting plan mode (like exact code snippets, error messages, or content you generated), read the full transcript at: /Users/jan/.claude/projects/-Users-jan-prg-ClusterCockpit-cc-backend/94e2d90e-5772-4423-a4fb-75c7caa1e1c4.jsonl"},"uuid":"9e7a0d69-6f4e-432a-9c30-0c5be4e1243e","timestamp":"2026-03-23T05:19:53.354Z","planContent":"# Fix: Parquet Row Group Limit in Metric Store Archiving\n\n## Context\n\nThe cleanup archiver creates one parquet file per cluster and calls `writer.Flush()` after every checkpoint file, creating one row group per checkpoint. The parquet-go library hard-limits row groups to 32767 per file. Large clusters like \"fritz\" with many hosts and multiple checkpoint files per host exceed this limit, causing: `flushing parquet row group: the limit of 32767 row groups has been reached`\n\n## Root Cause\n\nIn `WriteCheckpointFile()` (`parquetArchive.go:115`), `w.writer.Flush()` is called after **every** checkpoint file. For a cluster with e.g. 1000 hosts × 40 checkpoint files = 40,000 flushes → 40,000 row groups → exceeds 32767.\n\n## Fix\n\nMove the `Flush()` out of `WriteCheckpointFile` and into the caller, flushing **once per host** instead of once per checkpoint file. This gives at most one row group per host (e.g. ~3000 for a large cluster), well within the limit.\n\nThis also improves compression — all checkpoint data for a single host is now in one row group with highly repetitive column values.\n\n### File 1: `pkg/metricstore/parquetArchive.go`\n\n1. **Remove `Flush()` from `WriteCheckpointFile`** (lines 115-117) — keep only the batch-drain logic\n2. **Add `FlushRowGroup()` method** — wraps `w.writer.Flush()` for the caller to invoke explicitly\n\n### File 2: `pkg/metricstore/archive.go`\n\n3. **Call `FlushRowGroup()` once per host** in the `for r := range results` loop (after all checkpoint files for that host are written), instead of relying on per-checkpoint flushes:\n\n```go\nfor r := range results {\n if writeErr == nil {\n for _, cf := range r.checkpoints {\n if err := writer.WriteCheckpointFile(cf, cluster, r.hostname, \"node\", \"\"); err != nil {\n writeErr = err\n break\n }\n }\n if writeErr == nil {\n if err := writer.FlushRowGroup(); err != nil {\n writeErr = err\n }\n }\n }\n toDelete = append(toDelete, deleteItem{dir: r.dir, files: r.files})\n}\n```\n\n## Verification\n\n- `go build ./pkg/metricstore/...` — compiles\n- `go test ./pkg/metricstore/...` — existing tests pass\n- Manually verify: for a cluster with N hosts, the parquet file should contain N row groups (not N × checkpoints-per-host)\n","userType":"external","entrypoint":"cli","cwd":"/Users/jan/prg/ClusterCockpit/cc-backend","sessionId":"0696ef34-7ff1-4c1e-9103-ffbca94f3ebd","version":"2.1.80","gitBranch":"hotfix","slug":"agile-napping-otter"}
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{"parentUuid":"2c5fad14-9fc6-4cb7-a012-794ab963bb26","isSidechain":false,"promptId":"4c9038e2-c763-4f23-82bf-037c28776776","type":"user","message":{"role":"user","content":[{"tool_use_id":"toolu_017LJEPgivpGA9iYteUS1PKJ","type":"tool_result","content":" 1→// Copyright (C) NHR@FAU, University Erlangen-Nuremberg.\n 2→// All rights reserved. This file is part of cc-backend.\n 3→// Use of this source code is governed by a MIT-style\n 4→// license that can be found in the LICENSE file.\n 5→\n 6→package metricstore\n 7→\n 8→import (\n 9→\t\"context\"\n 10→\t\"errors\"\n 11→\t\"fmt\"\n 12→\t\"os\"\n 13→\t\"path/filepath\"\n 14→\t\"sync\"\n 15→\t\"sync/atomic\"\n 16→\t\"time\"\n 17→\n 18→\tcclog \"github.com/ClusterCockpit/cc-lib/v2/ccLogger\"\n 19→)\n 20→\n 21→// Worker for either Archiving or Deleting files\n 22→\n 23→func CleanUp(wg *sync.WaitGroup, ctx context.Context) {\n 24→\tif Keys.Cleanup.Mode == \"archive\" {\n 25→\t\tcclog.Info(\"[METRICSTORE]> enable archive cleanup to parquet\")\n 26→\t\t// Run as Archiver\n 27→\t\tcleanUpWorker(wg, ctx,\n 28→\t\t\tKeys.RetentionInMemory,\n 29→\t\t\t\"archiving\",\n 30→\t\t\tKeys.Cleanup.RootDir,\n 31→\t\t\tfalse,\n 32→\t\t)\n 33→\t} else {\n 34→\t\t// Run as Deleter\n 35→\t\tcleanUpWorker(wg, ctx,\n 36→\t\t\tKeys.RetentionInMemory,\n 37→\t\t\t\"deleting\",\n 38→\t\t\t\"\",\n 39→\t\t\ttrue,\n 40→\t\t)\n 41→\t}\n 42→}\n 43→\n 44→// cleanUpWorker takes simple values to configure what it does\n 45→func cleanUpWorker(wg *sync.WaitGroup, ctx context.Context, interval string, mode string, cleanupDir string, delete bool) {\n 46→\twg.Go(func() {\n 47→\t\td, err := time.ParseDuration(interval)\n 48→\t\tif err != nil {\n 49→\t\t\tcclog.Fatalf(\"[METRICSTORE]> error parsing %s interval duration: %v\\n\", mode, err)\n 50→\t\t}\n 51→\t\tif d <= 0 {\n 52→\t\t\treturn\n 53→\t\t}\n 54→\n 55→\t\tticker := time.NewTicker(d)\n 56→\t\tdefer ticker.Stop()\n 57→\n 58→\t\tfor {\n 59→\t\t\tselect {\n 60→\t\t\tcase <-ctx.Done():\n 61→\t\t\t\treturn\n 62→\t\t\tcase <-ticker.C:\n 63→\t\t\t\tt := time.Now().Add(-d)\n 64→\t\t\t\tcclog.Infof(\"[METRICSTORE]> start %s checkpoints (older than %s)...\", mode, t.Format(time.RFC3339))\n 65→\n 66→\t\t\t\tn, err := CleanupCheckpoints(Keys.Checkpoints.RootDir, cleanupDir, t.Unix(), delete)\n 67→\n 68→\t\t\t\tif err != nil {\n 69→\t\t\t\t\tcclog.Errorf(\"[METRICSTORE]> %s failed: %s\", mode, err.Error())\n 70→\t\t\t\t} else {\n 71→\t\t\t\t\tif delete {\n 72→\t\t\t\t\t\tcclog.Infof(\"[METRICSTORE]> done: %d checkpoints deleted\", n)\n 73→\t\t\t\t\t} else {\n 74→\t\t\t\t\t\tcclog.Infof(\"[METRICSTORE]> done: %d checkpoint files archived to parquet\", n)\n 75→\t\t\t\t\t}\n 76→\t\t\t\t}\n 77→\t\t\t}\n 78→\t\t}\n 79→\t})\n 80→}\n 81→\n 82→var ErrNoNewArchiveData error = errors.New(\"all data already archived\")\n 83→\n 84→// CleanupCheckpoints deletes or archives all checkpoint files older than `from`.\n 85→// When archiving, consolidates all hosts per cluster into a single Parquet file.\n 86→func CleanupCheckpoints(checkpointsDir, cleanupDir string, from int64, deleteInstead bool) (int, error) {\n 87→\tif deleteInstead {\n 88→\t\treturn deleteCheckpoints(checkpointsDir, from)\n 89→\t}\n 90→\n 91→\treturn archiveCheckpoints(checkpointsDir, cleanupDir, from)\n 92→}\n 93→\n 94→// deleteCheckpoints removes checkpoint files older than `from` across all clusters/hosts.\n 95→func deleteCheckpoints(checkpointsDir string, from int64) (int, error) {\n 96→\tentries1, err := os.ReadDir(checkpointsDir)\n 97→\tif err != nil {\n 98→\t\treturn 0, err\n 99→\t}\n 100→\n 101→\ttype workItem struct {\n 102→\t\tdir string\n 103→\t\tcluster, host string\n 104→\t}\n 105→\n 106→\tvar wg sync.WaitGroup\n 107→\tn, errs := int32(0), int32(0)\n 108→\twork := make(chan workItem, Keys.NumWorkers)\n 109→\n 110→\twg.Add(Keys.NumWorkers)\n 111→\tfor worker := 0; worker < Keys.NumWorkers; worker++ {\n 112→\t\tgo func() {\n 113→\t\t\tdefer wg.Done()\n 114→\t\t\tfor item := range work {\n 115→\t\t\t\tentries, err := os.ReadDir(item.dir)\n 116→\t\t\t\tif err != nil {\n 117→\t\t\t\t\tcclog.Errorf(\"error reading %s/%s: %s\", item.cluster, item.host, err.Error())\n 118→\t\t\t\t\tatomic.AddInt32(&errs, 1)\n 119→\t\t\t\t\tcontinue\n 120→\t\t\t\t}\n 121→\n 122→\t\t\t\tfiles, err := findFiles(entries, from, false)\n 123→\t\t\t\tif err != nil {\n 124→\t\t\t\t\tcclog.Errorf(\"error finding files in %s/%s: %s\", item.cluster, item.host, err.Error())\n 125→\t\t\t\t\tatomic.AddInt32(&errs, 1)\n 126→\t\t\t\t\tcontinue\n 127→\t\t\t\t}\n 128→\n 129→\t\t\t\tfor _, checkpoint := range files {\n 130→\t\t\t\t\tif err := os.Remove(filepath.Join(item.dir, checkpoint)); err != nil {\n 131→\t\t\t\t\t\tcclog.Errorf(\"error deleting %s/%s/%s: %s\", item.cluster, item.host, checkpoint, err.Error())\n 132→\t\t\t\t\t\tatomic.AddInt32(&errs, 1)\n 133→\t\t\t\t\t} else {\n 134→\t\t\t\t\t\tatomic.AddInt32(&n, 1)\n 135→\t\t\t\t\t}\n 136→\t\t\t\t}\n 137→\t\t\t}\n 138→\t\t}()\n 139→\t}\n 140→\n 141→\tfor _, de1 := range entries1 {\n 142→\t\tentries2, e := os.ReadDir(filepath.Join(checkpointsDir, de1.Name()))\n 143→\t\tif e != nil {\n 144→\t\t\terr = e\n 145→\t\t\tcontinue\n 146→\t\t}\n 147→\n 148→\t\tfor _, de2 := range entries2 {\n 149→\t\t\twork <- workItem{\n 150→\t\t\t\tdir: filepath.Join(checkpointsDir, de1.Name(), de2.Name()),\n 151→\t\t\t\tcluster: de1.Name(),\n 152→\t\t\t\thost: de2.Name(),\n 153→\t\t\t}\n 154→\t\t}\n 155→\t}\n 156→\n 157→\tclose(work)\n 158→\twg.Wait()\n 159→\n 160→\tif err != nil {\n 161→\t\treturn int(n), err\n 162→\t}\n 163→\tif errs > 0 {\n 164→\t\treturn int(n), fmt.Errorf(\"%d errors happened while deleting (%d successes)\", errs, n)\n 165→\t}\n 166→\treturn int(n), nil\n 167→}\n 168→\n 169→// archiveCheckpoints archives checkpoint files to Parquet format.\n 170→// Produces one Parquet file per cluster: <cleanupDir>/<cluster>/<timestamp>.parquet\n 171→// Workers load checkpoint files from disk and send CheckpointFile trees on a\n 172→// back-pressured channel. The main thread streams each tree directly to Parquet\n 173→// rows without materializing all rows in memory.\n 174→func archiveCheckpoints(checkpointsDir, cleanupDir string, from int64) (int, error) {\n 175→\tcclog.Info(\"[METRICSTORE]> start archiving checkpoints to parquet\")\n 176→\tstartTime := time.Now()\n 177→\n 178→\tclusterEntries, err := os.ReadDir(checkpointsDir)\n 179→\tif err != nil {\n 180→\t\treturn 0, err\n 181→\t}\n 182→\n 183→\ttotalFiles := 0\n 184→\n 185→\tfor _, clusterEntry := range clusterEntries {\n 186→\t\tif !clusterEntry.IsDir() {\n 187→\t\t\tcontinue\n 188→\t\t}\n 189→\n 190→\t\tcluster := clusterEntry.Name()\n 191→\t\thostEntries, err := os.ReadDir(filepath.Join(checkpointsDir, cluster))\n 192→\t\tif err != nil {\n 193→\t\t\treturn totalFiles, err\n 194→\t\t}\n 195→\n 196→\t\t// Workers load checkpoint files from disk; main thread writes to parquet.\n 197→\t\ttype hostResult struct {\n 198→\t\t\tcheckpoints []*CheckpointFile\n 199→\t\t\thostname string\n 200→\t\t\tfiles []string // checkpoint filenames to delete after successful write\n 201→\t\t\tdir string // checkpoint directory for this host\n 202→\t\t}\n 203→\n 204→\t\t// Small buffer provides back-pressure: at most NumWorkers+2 results in flight.\n 205→\t\tresults := make(chan hostResult, 2)\n 206→\t\twork := make(chan struct {\n 207→\t\t\tdir, host string\n 208→\t\t}, Keys.NumWorkers)\n 209→\n 210→\t\tvar wg sync.WaitGroup\n 211→\t\terrs := int32(0)\n 212→\n 213→\t\twg.Add(Keys.NumWorkers)\n 214→\t\tfor w := 0; w < Keys.NumWorkers; w++ {\n 215→\t\t\tgo func() {\n 216→\t\t\t\tdefer wg.Done()\n 217→\t\t\t\tfor item := range work {\n 218→\t\t\t\t\tcheckpoints, files, err := loadCheckpointFiles(item.dir, from)\n 219→\t\t\t\t\tif err != nil {\n 220→\t\t\t\t\t\tcclog.Errorf(\"[METRICSTORE]> error reading checkpoints for %s/%s: %s\", cluster, item.host, err.Error())\n 221→\t\t\t\t\t\tatomic.AddInt32(&errs, 1)\n 222→\t\t\t\t\t\tcontinue\n 223→\t\t\t\t\t}\n 224→\t\t\t\t\tif len(checkpoints) > 0 {\n 225→\t\t\t\t\t\tresults <- hostResult{\n 226→\t\t\t\t\t\t\tcheckpoints: checkpoints,\n 227→\t\t\t\t\t\t\thostname: item.host,\n 228→\t\t\t\t\t\t\tfiles: files,\n 229→\t\t\t\t\t\t\tdir: item.dir,\n 230→\t\t\t\t\t\t}\n 231→\t\t\t\t\t}\n 232→\t\t\t\t}\n 233→\t\t\t}()\n 234→\t\t}\n 235→\n 236→\t\tgo func() {\n 237→\t\t\tfor _, hostEntry := range hostEntries {\n 238→\t\t\t\tif !hostEntry.IsDir() {\n 239→\t\t\t\t\tcontinue\n 240→\t\t\t\t}\n 241→\t\t\t\tdir := filepath.Join(checkpointsDir, cluster, hostEntry.Name())\n 242→\t\t\t\twork <- struct {\n 243→\t\t\t\t\tdir, host string\n 244→\t\t\t\t}{dir: dir, host: hostEntry.Name()}\n 245→\t\t\t}\n 246→\t\t\tclose(work)\n 247→\t\t\twg.Wait()\n 248→\t\t\tclose(results)\n 249→\t\t}()\n 250→\n 251→\t\t// Open streaming writer and write each host's checkpoint files as a row group\n 252→\t\tparquetFile := filepath.Join(cleanupDir, cluster, fmt.Sprintf(\"%d.parquet\", from))\n 253→\t\twriter, err := newParquetArchiveWriter(parquetFile)\n 254→\t\tif err != nil {\n 255→\t\t\t// Drain results channel to unblock workers\n 256→\t\t\tfor range results {\n 257→\t\t\t}\n 258→\t\t\treturn totalFiles, fmt.Errorf(\"creating parquet writer for cluster %s: %w\", cluster, err)\n 259→\t\t}\n 260→\n 261→\t\ttype deleteItem struct {\n 262→\t\t\tdir string\n 263→\t\t\tfiles []string\n 264→\t\t}\n 265→\t\tvar toDelete []deleteItem\n 266→\t\twriteErr := error(nil)\n 267→\n 268→\t\tfor r := range results {\n 269→\t\t\tif writeErr == nil {\n 270→\t\t\t\t// Stream each checkpoint file directly to parquet rows.\n 271→\t\t\t\t// Each checkpoint is processed and discarded before the next.\n 272→\t\t\t\tfor _, cf := range r.checkpoints {\n 273→\t\t\t\t\tif err := writer.WriteCheckpointFile(cf, cluster, r.hostname, \"node\", \"\"); err != nil {\n 274→\t\t\t\t\t\twriteErr = err\n 275→\t\t\t\t\t\tbreak\n 276→\t\t\t\t\t}\n 277→\t\t\t\t}\n 278→\t\t\t}\n 279→\t\t\t// Always track files for deletion (even if write failed, we still drain)\n 280→\t\t\ttoDelete = append(toDelete, deleteItem{dir: r.dir, files: r.files})\n 281→\t\t}\n 282→\n 283→\t\tif err := writer.Close(); err != nil && writeErr == nil {\n 284→\t\t\twriteErr = err\n 285→\t\t}\n 286→\n 287→\t\tif errs > 0 {\n 288→\t\t\treturn totalFiles, fmt.Errorf(\"%d errors reading checkpoints for cluster %s\", errs, cluster)\n 289→\t\t}\n 290→\n 291→\t\tif writer.count == 0 {\n 292→\t\t\t// No data written — remove empty file\n 293→\t\t\tos.Remove(parquetFile)\n 294→\t\t\tcontinue\n 295→\t\t}\n 296→\n 297→\t\tif writeErr != nil {\n 298→\t\t\tos.Remove(parquetFile)\n 299→\t\t\treturn totalFiles, fmt.Errorf(\"writing parquet archive for cluster %s: %w\", cluster, writeErr)\n 300→\t\t}\n 301→\n 302→\t\t// Delete archived checkpoint files\n 303→\t\tfor _, item := range toDelete {\n 304→\t\t\tfor _, file := range item.files {\n 305→\t\t\t\tfilename := filepath.Join(item.dir, file)\n 306→\t\t\t\tif err := os.Remove(filename); err != nil {\n 307→\t\t\t\t\tcclog.Warnf(\"[METRICSTORE]> could not remove archived checkpoint %s: %v\", filename, err)\n 308→\t\t\t\t} else {\n 309→\t\t\t\t\ttotalFiles++\n 310→\t\t\t\t}\n 311→\t\t\t}\n 312→\t\t}\n 313→\n 314→\t\tcclog.Infof(\"[METRICSTORE]> archived %d rows from %d files for cluster %s to %s\",\n 315→\t\t\twriter.count, totalFiles, cluster, parquetFile)\n 316→\t}\n 317→\n 318→\tcclog.Infof(\"[METRICSTORE]> archiving checkpoints completed in %s (%d files)\", time.Since(startTime).Round(time.Millisecond), totalFiles)\n 319→\treturn totalFiles, nil\n 320→}\n 321→"}]},"uuid":"870d863c-ecdd-45e4-9341-996b487d0f00","timestamp":"2026-03-23T05:19:58.412Z","toolUseResult":{"type":"text","file":{"filePath":"/Users/jan/prg/ClusterCockpit/cc-backend/pkg/metricstore/archive.go","content":"// Copyright (C) NHR@FAU, University Erlangen-Nuremberg.\n// All rights reserved. This file is part of cc-backend.\n// Use of this source code is governed by a MIT-style\n// license that can be found in the LICENSE file.\n\npackage metricstore\n\nimport (\n\t\"context\"\n\t\"errors\"\n\t\"fmt\"\n\t\"os\"\n\t\"path/filepath\"\n\t\"sync\"\n\t\"sync/atomic\"\n\t\"time\"\n\n\tcclog \"github.com/ClusterCockpit/cc-lib/v2/ccLogger\"\n)\n\n// Worker for either Archiving or Deleting files\n\nfunc CleanUp(wg *sync.WaitGroup, ctx context.Context) {\n\tif Keys.Cleanup.Mode == \"archive\" {\n\t\tcclog.Info(\"[METRICSTORE]> enable archive cleanup to parquet\")\n\t\t// Run as Archiver\n\t\tcleanUpWorker(wg, ctx,\n\t\t\tKeys.RetentionInMemory,\n\t\t\t\"archiving\",\n\t\t\tKeys.Cleanup.RootDir,\n\t\t\tfalse,\n\t\t)\n\t} else {\n\t\t// Run as Deleter\n\t\tcleanUpWorker(wg, ctx,\n\t\t\tKeys.RetentionInMemory,\n\t\t\t\"deleting\",\n\t\t\t\"\",\n\t\t\ttrue,\n\t\t)\n\t}\n}\n\n// cleanUpWorker takes simple values to configure what it does\nfunc cleanUpWorker(wg *sync.WaitGroup, ctx context.Context, interval string, mode string, cleanupDir string, delete bool) {\n\twg.Go(func() {\n\t\td, err := time.ParseDuration(interval)\n\t\tif err != nil {\n\t\t\tcclog.Fatalf(\"[METRICSTORE]> error parsing %s interval duration: %v\\n\", mode, err)\n\t\t}\n\t\tif d <= 0 {\n\t\t\treturn\n\t\t}\n\n\t\tticker := time.NewTicker(d)\n\t\tdefer ticker.Stop()\n\n\t\tfor {\n\t\t\tselect {\n\t\t\tcase <-ctx.Done():\n\t\t\t\treturn\n\t\t\tcase <-ticker.C:\n\t\t\t\tt := time.Now().Add(-d)\n\t\t\t\tcclog.Infof(\"[METRICSTORE]> start %s checkpoints (older than %s)...\", mode, t.Format(time.RFC3339))\n\n\t\t\t\tn, err := CleanupCheckpoints(Keys.Checkpoints.RootDir, cleanupDir, t.Unix(), delete)\n\n\t\t\t\tif err != nil {\n\t\t\t\t\tcclog.Errorf(\"[METRICSTORE]> %s failed: %s\", mode, err.Error())\n\t\t\t\t} else {\n\t\t\t\t\tif delete {\n\t\t\t\t\t\tcclog.Infof(\"[METRICSTORE]> done: %d checkpoints deleted\", n)\n\t\t\t\t\t} else {\n\t\t\t\t\t\tcclog.Infof(\"[METRICSTORE]> done: %d checkpoint files archived to parquet\", n)\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\t})\n}\n\nvar ErrNoNewArchiveData error = errors.New(\"all data already archived\")\n\n// CleanupCheckpoints deletes or archives all checkpoint files older than `from`.\n// When archiving, consolidates all hosts per cluster into a single Parquet file.\nfunc CleanupCheckpoints(checkpointsDir, cleanupDir string, from int64, deleteInstead bool) (int, error) {\n\tif deleteInstead {\n\t\treturn deleteCheckpoints(checkpointsDir, from)\n\t}\n\n\treturn archiveCheckpoints(checkpointsDir, cleanupDir, from)\n}\n\n// deleteCheckpoints removes checkpoint files older than `from` across all clusters/hosts.\nfunc deleteCheckpoints(checkpointsDir string, from int64) (int, error) {\n\tentries1, err := os.ReadDir(checkpointsDir)\n\tif err != nil {\n\t\treturn 0, err\n\t}\n\n\ttype workItem struct {\n\t\tdir string\n\t\tcluster, host string\n\t}\n\n\tvar wg sync.WaitGroup\n\tn, errs := int32(0), int32(0)\n\twork := make(chan workItem, Keys.NumWorkers)\n\n\twg.Add(Keys.NumWorkers)\n\tfor worker := 0; worker < Keys.NumWorkers; worker++ {\n\t\tgo func() {\n\t\t\tdefer wg.Done()\n\t\t\tfor item := range work {\n\t\t\t\tentries, err := os.ReadDir(item.dir)\n\t\t\t\tif err != nil {\n\t\t\t\t\tcclog.Errorf(\"error reading %s/%s: %s\", item.cluster, item.host, err.Error())\n\t\t\t\t\tatomic.AddInt32(&errs, 1)\n\t\t\t\t\tcontinue\n\t\t\t\t}\n\n\t\t\t\tfiles, err := findFiles(entries, from, false)\n\t\t\t\tif err != nil {\n\t\t\t\t\tcclog.Errorf(\"error finding files in %s/%s: %s\", item.cluster, item.host, err.Error())\n\t\t\t\t\tatomic.AddInt32(&errs, 1)\n\t\t\t\t\tcontinue\n\t\t\t\t}\n\n\t\t\t\tfor _, checkpoint := range files {\n\t\t\t\t\tif err := os.Remove(filepath.Join(item.dir, checkpoint)); err != nil {\n\t\t\t\t\t\tcclog.Errorf(\"error deleting %s/%s/%s: %s\", item.cluster, item.host, checkpoint, err.Error())\n\t\t\t\t\t\tatomic.AddInt32(&errs, 1)\n\t\t\t\t\t} else {\n\t\t\t\t\t\tatomic.AddInt32(&n, 1)\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t}\n\t\t}()\n\t}\n\n\tfor _, de1 := range entries1 {\n\t\tentries2, e := os.ReadDir(filepath.Join(checkpointsDir, de1.Name()))\n\t\tif e != nil {\n\t\t\terr = e\n\t\t\tcontinue\n\t\t}\n\n\t\tfor _, de2 := range entries2 {\n\t\t\twork <- workItem{\n\t\t\t\tdir: filepath.Join(checkpointsDir, de1.Name(), de2.Name()),\n\t\t\t\tcluster: de1.Name(),\n\t\t\t\thost: de2.Name(),\n\t\t\t}\n\t\t}\n\t}\n\n\tclose(work)\n\twg.Wait()\n\n\tif err != nil {\n\t\treturn int(n), err\n\t}\n\tif errs > 0 {\n\t\treturn int(n), fmt.Errorf(\"%d errors happened while deleting (%d successes)\", errs, n)\n\t}\n\treturn int(n), nil\n}\n\n// archiveCheckpoints archives checkpoint files to Parquet format.\n// Produces one Parquet file per cluster: <cleanupDir>/<cluster>/<timestamp>.parquet\n// Workers load checkpoint files from disk and send CheckpointFile trees on a\n// back-pressured channel. The main thread streams each tree directly to Parquet\n// rows without materializing all rows in memory.\nfunc archiveCheckpoints(checkpointsDir, cleanupDir string, from int64) (int, error) {\n\tcclog.Info(\"[METRICSTORE]> start archiving checkpoints to parquet\")\n\tstartTime := time.Now()\n\n\tclusterEntries, err := os.ReadDir(checkpointsDir)\n\tif err != nil {\n\t\treturn 0, err\n\t}\n\n\ttotalFiles := 0\n\n\tfor _, clusterEntry := range clusterEntries {\n\t\tif !clusterEntry.IsDir() {\n\t\t\tcontinue\n\t\t}\n\n\t\tcluster := clusterEntry.Name()\n\t\thostEntries, err := os.ReadDir(filepath.Join(checkpointsDir, cluster))\n\t\tif err != nil {\n\t\t\treturn totalFiles, err\n\t\t}\n\n\t\t// Workers load checkpoint files from disk; main thread writes to parquet.\n\t\ttype hostResult struct {\n\t\t\tcheckpoints []*CheckpointFile\n\t\t\thostname string\n\t\t\tfiles []string // checkpoint filenames to delete after successful write\n\t\t\tdir string // checkpoint directory for this host\n\t\t}\n\n\t\t// Small buffer provides back-pressure: at most NumWorkers+2 results in flight.\n\t\tresults := make(chan hostResult, 2)\n\t\twork := make(chan struct {\n\t\t\tdir, host string\n\t\t}, Keys.NumWorkers)\n\n\t\tvar wg sync.WaitGroup\n\t\terrs := int32(0)\n\n\t\twg.Add(Keys.NumWorkers)\n\t\tfor w := 0; w < Keys.NumWorkers; w++ {\n\t\t\tgo func() {\n\t\t\t\tdefer wg.Done()\n\t\t\t\tfor item := range work {\n\t\t\t\t\tcheckpoints, files, err := loadCheckpointFiles(item.dir, from)\n\t\t\t\t\tif err != nil {\n\t\t\t\t\t\tcclog.Errorf(\"[METRICSTORE]> error reading checkpoints for %s/%s: %s\", cluster, item.host, err.Error())\n\t\t\t\t\t\tatomic.AddInt32(&errs, 1)\n\t\t\t\t\t\tcontinue\n\t\t\t\t\t}\n\t\t\t\t\tif len(checkpoints) > 0 {\n\t\t\t\t\t\tresults <- hostResult{\n\t\t\t\t\t\t\tcheckpoints: checkpoints,\n\t\t\t\t\t\t\thostname: item.host,\n\t\t\t\t\t\t\tfiles: files,\n\t\t\t\t\t\t\tdir: item.dir,\n\t\t\t\t\t\t}\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t}()\n\t\t}\n\n\t\tgo func() {\n\t\t\tfor _, hostEntry := range hostEntries {\n\t\t\t\tif !hostEntry.IsDir() {\n\t\t\t\t\tcontinue\n\t\t\t\t}\n\t\t\t\tdir := filepath.Join(checkpointsDir, cluster, hostEntry.Name())\n\t\t\t\twork <- struct {\n\t\t\t\t\tdir, host string\n\t\t\t\t}{dir: dir, host: hostEntry.Name()}\n\t\t\t}\n\t\t\tclose(work)\n\t\t\twg.Wait()\n\t\t\tclose(results)\n\t\t}()\n\n\t\t// Open streaming writer and write each host's checkpoint files as a row group\n\t\tparquetFile := filepath.Join(cleanupDir, cluster, fmt.Sprintf(\"%d.parquet\", from))\n\t\twriter, err := newParquetArchiveWriter(parquetFile)\n\t\tif err != nil {\n\t\t\t// Drain results channel to unblock workers\n\t\t\tfor range results {\n\t\t\t}\n\t\t\treturn totalFiles, fmt.Errorf(\"creating parquet writer for cluster %s: %w\", cluster, err)\n\t\t}\n\n\t\ttype deleteItem struct {\n\t\t\tdir string\n\t\t\tfiles []string\n\t\t}\n\t\tvar toDelete []deleteItem\n\t\twriteErr := error(nil)\n\n\t\tfor r := range results {\n\t\t\tif writeErr == nil {\n\t\t\t\t// Stream each checkpoint file directly to parquet rows.\n\t\t\t\t// Each checkpoint is processed and discarded before the next.\n\t\t\t\tfor _, cf := range r.checkpoints {\n\t\t\t\t\tif err := writer.WriteCheckpointFile(cf, cluster, r.hostname, \"node\", \"\"); err != nil {\n\t\t\t\t\t\twriteErr = err\n\t\t\t\t\t\tbreak\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t}\n\t\t\t// Always track files for deletion (even if write failed, we still drain)\n\t\t\ttoDelete = append(toDelete, deleteItem{dir: r.dir, files: r.files})\n\t\t}\n\n\t\tif err := writer.Close(); err != nil && writeErr == nil {\n\t\t\twriteErr = err\n\t\t}\n\n\t\tif errs > 0 {\n\t\t\treturn totalFiles, fmt.Errorf(\"%d errors reading checkpoints for cluster %s\", errs, cluster)\n\t\t}\n\n\t\tif writer.count == 0 {\n\t\t\t// No data written — remove empty file\n\t\t\tos.Remove(parquetFile)\n\t\t\tcontinue\n\t\t}\n\n\t\tif writeErr != nil {\n\t\t\tos.Remove(parquetFile)\n\t\t\treturn totalFiles, fmt.Errorf(\"writing parquet archive for cluster %s: %w\", cluster, writeErr)\n\t\t}\n\n\t\t// Delete archived checkpoint files\n\t\tfor _, item := range toDelete {\n\t\t\tfor _, file := range item.files {\n\t\t\t\tfilename := filepath.Join(item.dir, file)\n\t\t\t\tif err := os.Remove(filename); err != nil {\n\t\t\t\t\tcclog.Warnf(\"[METRICSTORE]> could not remove archived checkpoint %s: %v\", filename, err)\n\t\t\t\t} else {\n\t\t\t\t\ttotalFiles++\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\n\t\tcclog.Infof(\"[METRICSTORE]> archived %d rows from %d files for cluster %s to %s\",\n\t\t\twriter.count, totalFiles, cluster, parquetFile)\n\t}\n\n\tcclog.Infof(\"[METRICSTORE]> archiving checkpoints completed in %s (%d files)\", time.Since(startTime).Round(time.Millisecond), totalFiles)\n\treturn totalFiles, nil\n}\n","numLines":321,"startLine":1,"totalLines":321}},"sourceToolAssistantUUID":"2c5fad14-9fc6-4cb7-a012-794ab963bb26","userType":"external","entrypoint":"cli","cwd":"/Users/jan/prg/ClusterCockpit/cc-backend","sessionId":"0696ef34-7ff1-4c1e-9103-ffbca94f3ebd","version":"2.1.80","gitBranch":"hotfix","slug":"agile-napping-otter"}
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{"parentUuid":"4b7c1aa9-fc16-49f6-9bc6-43bb00bb32b0","isSidechain":false,"promptId":"4c9038e2-c763-4f23-82bf-037c28776776","type":"user","message":{"role":"user","content":[{"tool_use_id":"toolu_016KLLn9We5zdjEBfErv21ML","type":"tool_result","content":"The file /Users/jan/prg/ClusterCockpit/cc-backend/pkg/metricstore/parquetArchive.go has been updated successfully."}]},"uuid":"bf4ac858-a9cb-4c00-9888-a4de61e3956b","timestamp":"2026-03-23T05:20:03.466Z","toolUseResult":{"filePath":"/Users/jan/prg/ClusterCockpit/cc-backend/pkg/metricstore/parquetArchive.go","oldString":"\tif err := w.writer.Flush(); err != nil {\n\t\treturn fmt.Errorf(\"flushing parquet row group: %w\", err)\n\t}\n\n\treturn nil\n}","newString":"\treturn nil\n}\n\n// FlushRowGroup flushes the current row group to the Parquet file.\n// Should be called once per host after all checkpoint files for that host are written.\nfunc (w *parquetArchiveWriter) FlushRowGroup() error {\n\tif err := w.writer.Flush(); err != nil {\n\t\treturn fmt.Errorf(\"flushing parquet row group: %w\", err)\n\t}\n\treturn nil\n}","originalFile":"// Copyright (C) NHR@FAU, University Erlangen-Nuremberg.\n// All rights reserved. This file is part of cc-backend.\n// Use of this source code is governed by a MIT-style\n// license that can be found in the LICENSE file.\n\npackage metricstore\n\nimport (\n\t\"bufio\"\n\t\"encoding/binary\"\n\t\"encoding/json\"\n\t\"fmt\"\n\t\"os\"\n\t\"path/filepath\"\n\t\"sort\"\n\n\tpq \"github.com/parquet-go/parquet-go\"\n)\n\n// ParquetMetricRow is the long-format schema for archived metric data.\n// One row per (host, metric, scope, scope_id, timestamp) data point.\n// Sorted by (cluster, hostname, metric, timestamp) for optimal compression.\ntype ParquetMetricRow struct {\n\tCluster string `parquet:\"cluster\"`\n\tHostname string `parquet:\"hostname\"`\n\tMetric string `parquet:\"metric\"`\n\tScope string `parquet:\"scope\"`\n\tScopeID string `parquet:\"scope_id\"`\n\tTimestamp int64 `parquet:\"timestamp\"`\n\tFrequency int64 `parquet:\"frequency\"`\n\tValue float32 `parquet:\"value\"`\n}\n\n// parseScopeFromName infers scope and scope_id from a child level name.\n// Examples: \"socket0\" → (\"socket\", \"0\"), \"core12\" → (\"core\", \"12\"),\n// \"a0\" (accelerator) → (\"accelerator\", \"0\").\n// If the name doesn't match known patterns, it's used as-is for scope with empty scope_id.\nfunc parseScopeFromName(name string) (string, string) {\n\tprefixes := []struct {\n\t\tprefix string\n\t\tscope string\n\t}{\n\t\t{\"socket\", \"socket\"},\n\t\t{\"memoryDomain\", \"memoryDomain\"},\n\t\t{\"core\", \"core\"},\n\t\t{\"hwthread\", \"hwthread\"},\n\t\t{\"cpu\", \"hwthread\"},\n\t\t{\"accelerator\", \"accelerator\"},\n\t}\n\n\tfor _, p := range prefixes {\n\t\tif len(name) > len(p.prefix) && name[:len(p.prefix)] == p.prefix {\n\t\t\tid := name[len(p.prefix):]\n\t\t\tif len(id) > 0 && id[0] >= '0' && id[0] <= '9' {\n\t\t\t\treturn p.scope, id\n\t\t\t}\n\t\t}\n\t}\n\n\treturn name, \"\"\n}\n\n// parquetArchiveWriter supports incremental writes to a Parquet file.\n// Uses streaming writes to avoid accumulating all rows in memory.\ntype parquetArchiveWriter struct {\n\twriter *pq.GenericWriter[ParquetMetricRow]\n\tbw *bufio.Writer\n\tf *os.File\n\tbatch []ParquetMetricRow // reusable batch buffer\n\tcount int\n}\n\nconst parquetBatchSize = 1024\n\n// newParquetArchiveWriter creates a streaming Parquet writer with Zstd compression.\nfunc newParquetArchiveWriter(filename string) (*parquetArchiveWriter, error) {\n\tif err := os.MkdirAll(filepath.Dir(filename), CheckpointDirPerms); err != nil {\n\t\treturn nil, fmt.Errorf(\"creating archive directory: %w\", err)\n\t}\n\n\tf, err := os.OpenFile(filename, os.O_CREATE|os.O_WRONLY|os.O_TRUNC, CheckpointFilePerms)\n\tif err != nil {\n\t\treturn nil, fmt.Errorf(\"creating parquet file: %w\", err)\n\t}\n\n\tbw := bufio.NewWriterSize(f, 1<<20) // 1MB write buffer\n\n\twriter := pq.NewGenericWriter[ParquetMetricRow](bw,\n\t\tpq.Compression(&pq.Zstd),\n\t)\n\n\treturn &parquetArchiveWriter{\n\t\twriter: writer,\n\t\tbw: bw,\n\t\tf: f,\n\t\tbatch: make([]ParquetMetricRow, 0, parquetBatchSize),\n\t}, nil\n}\n\n// WriteCheckpointFile streams a CheckpointFile tree directly to Parquet rows,\n// writing metrics in sorted order without materializing all rows in memory.\n// Produces one row group per call (typically one host's data).\nfunc (w *parquetArchiveWriter) WriteCheckpointFile(cf *CheckpointFile, cluster, hostname, scope, scopeID string) error {\n\tw.writeLevel(cf, cluster, hostname, scope, scopeID)\n\n\t// Flush remaining batch\n\tif len(w.batch) > 0 {\n\t\tif _, err := w.writer.Write(w.batch); err != nil {\n\t\t\treturn fmt.Errorf(\"writing parquet rows: %w\", err)\n\t\t}\n\t\tw.count += len(w.batch)\n\t\tw.batch = w.batch[:0]\n\t}\n\n\tif err := w.writer.Flush(); err != nil {\n\t\treturn fmt.Errorf(\"flushing parquet row group: %w\", err)\n\t}\n\n\treturn nil\n}\n\n// writeLevel recursively writes metrics from a CheckpointFile level.\n// Metric names and child names are sorted for deterministic, compression-friendly output.\nfunc (w *parquetArchiveWriter) writeLevel(cf *CheckpointFile, cluster, hostname, scope, scopeID string) {\n\t// Sort metric names for deterministic order\n\tmetricNames := make([]string, 0, len(cf.Metrics))\n\tfor name := range cf.Metrics {\n\t\tmetricNames = append(metricNames, name)\n\t}\n\tsort.Strings(metricNames)\n\n\tfor _, metricName := range metricNames {\n\t\tcm := cf.Metrics[metricName]\n\t\tts := cm.Start\n\t\tfor _, v := range cm.Data {\n\t\t\tif !v.IsNaN() {\n\t\t\t\tw.batch = append(w.batch, ParquetMetricRow{\n\t\t\t\t\tCluster: cluster,\n\t\t\t\t\tHostname: hostname,\n\t\t\t\t\tMetric: metricName,\n\t\t\t\t\tScope: scope,\n\t\t\t\t\tScopeID: scopeID,\n\t\t\t\t\tTimestamp: ts,\n\t\t\t\t\tFrequency: cm.Frequency,\n\t\t\t\t\tValue: float32(v),\n\t\t\t\t})\n\n\t\t\t\tif len(w.batch) >= parquetBatchSize {\n\t\t\t\t\tw.writer.Write(w.batch)\n\t\t\t\t\tw.count += len(w.batch)\n\t\t\t\t\tw.batch = w.batch[:0]\n\t\t\t\t}\n\t\t\t}\n\t\t\tts += cm.Frequency\n\t\t}\n\t}\n\n\t// Sort child names for deterministic order\n\tchildNames := make([]string, 0, len(cf.Children))\n\tfor name := range cf.Children {\n\t\tchildNames = append(childNames, name)\n\t}\n\tsort.Strings(childNames)\n\n\tfor _, childName := range childNames {\n\t\tchildScope, childScopeID := parseScopeFromName(childName)\n\t\tw.writeLevel(cf.Children[childName], cluster, hostname, childScope, childScopeID)\n\t}\n}\n\n// Close finalises the Parquet file (footer, buffered I/O, file handle).\nfunc (w *parquetArchiveWriter) Close() error {\n\tif err := w.writer.Close(); err != nil {\n\t\tw.f.Close()\n\t\treturn fmt.Errorf(\"closing parquet writer: %w\", err)\n\t}\n\n\tif err := w.bw.Flush(); err != nil {\n\t\tw.f.Close()\n\t\treturn fmt.Errorf(\"flushing parquet file: %w\", err)\n\t}\n\n\treturn w.f.Close()\n}\n\n// loadCheckpointFileFromDisk reads a JSON or binary checkpoint file and returns\n// a CheckpointFile. Used by the Parquet archiver to read checkpoint data\n// before converting it to Parquet format.\nfunc loadCheckpointFileFromDisk(filename string) (*CheckpointFile, error) {\n\tf, err := os.Open(filename)\n\tif err != nil {\n\t\treturn nil, err\n\t}\n\tdefer f.Close()\n\n\text := filepath.Ext(filename)\n\tswitch ext {\n\tcase \".json\":\n\t\tcf := &CheckpointFile{}\n\t\tbr := bufio.NewReader(f)\n\t\tif err := json.NewDecoder(br).Decode(cf); err != nil {\n\t\t\treturn nil, fmt.Errorf(\"decoding JSON checkpoint %s: %w\", filename, err)\n\t\t}\n\t\treturn cf, nil\n\n\tcase \".bin\":\n\t\tbr := bufio.NewReader(f)\n\t\tvar magic uint32\n\t\tif err := binary.Read(br, binary.LittleEndian, &magic); err != nil {\n\t\t\treturn nil, fmt.Errorf(\"reading magic from %s: %w\", filename, err)\n\t\t}\n\t\tif magic != snapFileMagic {\n\t\t\treturn nil, fmt.Errorf(\"invalid snapshot magic in %s: 0x%08X\", filename, magic)\n\t\t}\n\t\tvar fileFrom, fileTo int64\n\t\tif err := binary.Read(br, binary.LittleEndian, &fileFrom); err != nil {\n\t\t\treturn nil, fmt.Errorf(\"reading from-timestamp from %s: %w\", filename, err)\n\t\t}\n\t\tif err := binary.Read(br, binary.LittleEndian, &fileTo); err != nil {\n\t\t\treturn nil, fmt.Errorf(\"reading to-timestamp from %s: %w\", filename, err)\n\t\t}\n\t\tcf, err := readBinaryLevel(br)\n\t\tif err != nil {\n\t\t\treturn nil, fmt.Errorf(\"reading binary level from %s: %w\", filename, err)\n\t\t}\n\t\tcf.From = fileFrom\n\t\tcf.To = fileTo\n\t\treturn cf, nil\n\n\tdefault:\n\t\treturn nil, fmt.Errorf(\"unsupported checkpoint extension: %s\", ext)\n\t}\n}\n\n// loadCheckpointFiles reads checkpoint files for a host directory and returns\n// the loaded CheckpointFiles and their filenames. Processes one file at a time\n// to avoid holding all checkpoint data in memory simultaneously.\nfunc loadCheckpointFiles(dir string, from int64) ([]*CheckpointFile, []string, error) {\n\tentries, err := os.ReadDir(dir)\n\tif err != nil {\n\t\treturn nil, nil, err\n\t}\n\n\tfiles, err := findFiles(entries, from, false)\n\tif err != nil {\n\t\treturn nil, nil, err\n\t}\n\n\tif len(files) == 0 {\n\t\treturn nil, nil, nil\n\t}\n\n\tvar checkpoints []*CheckpointFile\n\tvar processedFiles []string\n\n\tfor _, checkpoint := range files {\n\t\tfilename := filepath.Join(dir, checkpoint)\n\t\tcf, err := loadCheckpointFileFromDisk(filename)\n\t\tif err != nil {\n\t\t\tcontinue\n\t\t}\n\t\tcheckpoints = append(checkpoints, cf)\n\t\tprocessedFiles = append(processedFiles, checkpoint)\n\t}\n\n\treturn checkpoints, processedFiles, nil\n}\n","structuredPatch":[{"oldStart":112,"oldLines":10,"newStart":112,"newLines":15,"lines":[" w.batch = w.batch[:0]"," }"," ","+ return nil","+}","+","+// FlushRowGroup flushes the current row group to the Parquet file.","+// Should be called once per host after all checkpoint files for that host are written.","+func (w *parquetArchiveWriter) FlushRowGroup() error {"," if err := w.writer.Flush(); err != nil {"," return fmt.Errorf(\"flushing parquet row group: %w\", err)"," }","-"," return nil"," }"," "]}],"userModified":false,"replaceAll":false},"sourceToolAssistantUUID":"4b7c1aa9-fc16-49f6-9bc6-43bb00bb32b0","userType":"external","entrypoint":"cli","cwd":"/Users/jan/prg/ClusterCockpit/cc-backend","sessionId":"0696ef34-7ff1-4c1e-9103-ffbca94f3ebd","version":"2.1.80","gitBranch":"hotfix","slug":"agile-napping-otter"}
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{"parentUuid":"bc65928d-4da1-460a-a182-cebe175873fc","isSidechain":false,"promptId":"4c9038e2-c763-4f23-82bf-037c28776776","type":"user","message":{"role":"user","content":[{"tool_use_id":"toolu_015J9uVwKvyAEVC2JSdxzjFc","type":"tool_result","content":"The file /Users/jan/prg/ClusterCockpit/cc-backend/pkg/metricstore/parquetArchive.go has been updated successfully."}]},"uuid":"e0d5473f-aae0-40ca-87d1-8a0ed3c80169","timestamp":"2026-03-23T05:20:07.388Z","toolUseResult":{"filePath":"/Users/jan/prg/ClusterCockpit/cc-backend/pkg/metricstore/parquetArchive.go","oldString":"// Produces one row group per call (typically one host's data).","newString":"// Call FlushRowGroup() after writing all checkpoint files for a host.","originalFile":"// Copyright (C) NHR@FAU, University Erlangen-Nuremberg.\n// All rights reserved. This file is part of cc-backend.\n// Use of this source code is governed by a MIT-style\n// license that can be found in the LICENSE file.\n\npackage metricstore\n\nimport (\n\t\"bufio\"\n\t\"encoding/binary\"\n\t\"encoding/json\"\n\t\"fmt\"\n\t\"os\"\n\t\"path/filepath\"\n\t\"sort\"\n\n\tpq \"github.com/parquet-go/parquet-go\"\n)\n\n// ParquetMetricRow is the long-format schema for archived metric data.\n// One row per (host, metric, scope, scope_id, timestamp) data point.\n// Sorted by (cluster, hostname, metric, timestamp) for optimal compression.\ntype ParquetMetricRow struct {\n\tCluster string `parquet:\"cluster\"`\n\tHostname string `parquet:\"hostname\"`\n\tMetric string `parquet:\"metric\"`\n\tScope string `parquet:\"scope\"`\n\tScopeID string `parquet:\"scope_id\"`\n\tTimestamp int64 `parquet:\"timestamp\"`\n\tFrequency int64 `parquet:\"frequency\"`\n\tValue float32 `parquet:\"value\"`\n}\n\n// parseScopeFromName infers scope and scope_id from a child level name.\n// Examples: \"socket0\" → (\"socket\", \"0\"), \"core12\" → (\"core\", \"12\"),\n// \"a0\" (accelerator) → (\"accelerator\", \"0\").\n// If the name doesn't match known patterns, it's used as-is for scope with empty scope_id.\nfunc parseScopeFromName(name string) (string, string) {\n\tprefixes := []struct {\n\t\tprefix string\n\t\tscope string\n\t}{\n\t\t{\"socket\", \"socket\"},\n\t\t{\"memoryDomain\", \"memoryDomain\"},\n\t\t{\"core\", \"core\"},\n\t\t{\"hwthread\", \"hwthread\"},\n\t\t{\"cpu\", \"hwthread\"},\n\t\t{\"accelerator\", \"accelerator\"},\n\t}\n\n\tfor _, p := range prefixes {\n\t\tif len(name) > len(p.prefix) && name[:len(p.prefix)] == p.prefix {\n\t\t\tid := name[len(p.prefix):]\n\t\t\tif len(id) > 0 && id[0] >= '0' && id[0] <= '9' {\n\t\t\t\treturn p.scope, id\n\t\t\t}\n\t\t}\n\t}\n\n\treturn name, \"\"\n}\n\n// parquetArchiveWriter supports incremental writes to a Parquet file.\n// Uses streaming writes to avoid accumulating all rows in memory.\ntype parquetArchiveWriter struct {\n\twriter *pq.GenericWriter[ParquetMetricRow]\n\tbw *bufio.Writer\n\tf *os.File\n\tbatch []ParquetMetricRow // reusable batch buffer\n\tcount int\n}\n\nconst parquetBatchSize = 1024\n\n// newParquetArchiveWriter creates a streaming Parquet writer with Zstd compression.\nfunc newParquetArchiveWriter(filename string) (*parquetArchiveWriter, error) {\n\tif err := os.MkdirAll(filepath.Dir(filename), CheckpointDirPerms); err != nil {\n\t\treturn nil, fmt.Errorf(\"creating archive directory: %w\", err)\n\t}\n\n\tf, err := os.OpenFile(filename, os.O_CREATE|os.O_WRONLY|os.O_TRUNC, CheckpointFilePerms)\n\tif err != nil {\n\t\treturn nil, fmt.Errorf(\"creating parquet file: %w\", err)\n\t}\n\n\tbw := bufio.NewWriterSize(f, 1<<20) // 1MB write buffer\n\n\twriter := pq.NewGenericWriter[ParquetMetricRow](bw,\n\t\tpq.Compression(&pq.Zstd),\n\t)\n\n\treturn &parquetArchiveWriter{\n\t\twriter: writer,\n\t\tbw: bw,\n\t\tf: f,\n\t\tbatch: make([]ParquetMetricRow, 0, parquetBatchSize),\n\t}, nil\n}\n\n// WriteCheckpointFile streams a CheckpointFile tree directly to Parquet rows,\n// writing metrics in sorted order without materializing all rows in memory.\n// Produces one row group per call (typically one host's data).\nfunc (w *parquetArchiveWriter) WriteCheckpointFile(cf *CheckpointFile, cluster, hostname, scope, scopeID string) error {\n\tw.writeLevel(cf, cluster, hostname, scope, scopeID)\n\n\t// Flush remaining batch\n\tif len(w.batch) > 0 {\n\t\tif _, err := w.writer.Write(w.batch); err != nil {\n\t\t\treturn fmt.Errorf(\"writing parquet rows: %w\", err)\n\t\t}\n\t\tw.count += len(w.batch)\n\t\tw.batch = w.batch[:0]\n\t}\n\n\treturn nil\n}\n\n// FlushRowGroup flushes the current row group to the Parquet file.\n// Should be called once per host after all checkpoint files for that host are written.\nfunc (w *parquetArchiveWriter) FlushRowGroup() error {\n\tif err := w.writer.Flush(); err != nil {\n\t\treturn fmt.Errorf(\"flushing parquet row group: %w\", err)\n\t}\n\treturn nil\n}\n\n// writeLevel recursively writes metrics from a CheckpointFile level.\n// Metric names and child names are sorted for deterministic, compression-friendly output.\nfunc (w *parquetArchiveWriter) writeLevel(cf *CheckpointFile, cluster, hostname, scope, scopeID string) {\n\t// Sort metric names for deterministic order\n\tmetricNames := make([]string, 0, len(cf.Metrics))\n\tfor name := range cf.Metrics {\n\t\tmetricNames = append(metricNames, name)\n\t}\n\tsort.Strings(metricNames)\n\n\tfor _, metricName := range metricNames {\n\t\tcm := cf.Metrics[metricName]\n\t\tts := cm.Start\n\t\tfor _, v := range cm.Data {\n\t\t\tif !v.IsNaN() {\n\t\t\t\tw.batch = append(w.batch, ParquetMetricRow{\n\t\t\t\t\tCluster: cluster,\n\t\t\t\t\tHostname: hostname,\n\t\t\t\t\tMetric: metricName,\n\t\t\t\t\tScope: scope,\n\t\t\t\t\tScopeID: scopeID,\n\t\t\t\t\tTimestamp: ts,\n\t\t\t\t\tFrequency: cm.Frequency,\n\t\t\t\t\tValue: float32(v),\n\t\t\t\t})\n\n\t\t\t\tif len(w.batch) >= parquetBatchSize {\n\t\t\t\t\tw.writer.Write(w.batch)\n\t\t\t\t\tw.count += len(w.batch)\n\t\t\t\t\tw.batch = w.batch[:0]\n\t\t\t\t}\n\t\t\t}\n\t\t\tts += cm.Frequency\n\t\t}\n\t}\n\n\t// Sort child names for deterministic order\n\tchildNames := make([]string, 0, len(cf.Children))\n\tfor name := range cf.Children {\n\t\tchildNames = append(childNames, name)\n\t}\n\tsort.Strings(childNames)\n\n\tfor _, childName := range childNames {\n\t\tchildScope, childScopeID := parseScopeFromName(childName)\n\t\tw.writeLevel(cf.Children[childName], cluster, hostname, childScope, childScopeID)\n\t}\n}\n\n// Close finalises the Parquet file (footer, buffered I/O, file handle).\nfunc (w *parquetArchiveWriter) Close() error {\n\tif err := w.writer.Close(); err != nil {\n\t\tw.f.Close()\n\t\treturn fmt.Errorf(\"closing parquet writer: %w\", err)\n\t}\n\n\tif err := w.bw.Flush(); err != nil {\n\t\tw.f.Close()\n\t\treturn fmt.Errorf(\"flushing parquet file: %w\", err)\n\t}\n\n\treturn w.f.Close()\n}\n\n// loadCheckpointFileFromDisk reads a JSON or binary checkpoint file and returns\n// a CheckpointFile. Used by the Parquet archiver to read checkpoint data\n// before converting it to Parquet format.\nfunc loadCheckpointFileFromDisk(filename string) (*CheckpointFile, error) {\n\tf, err := os.Open(filename)\n\tif err != nil {\n\t\treturn nil, err\n\t}\n\tdefer f.Close()\n\n\text := filepath.Ext(filename)\n\tswitch ext {\n\tcase \".json\":\n\t\tcf := &CheckpointFile{}\n\t\tbr := bufio.NewReader(f)\n\t\tif err := json.NewDecoder(br).Decode(cf); err != nil {\n\t\t\treturn nil, fmt.Errorf(\"decoding JSON checkpoint %s: %w\", filename, err)\n\t\t}\n\t\treturn cf, nil\n\n\tcase \".bin\":\n\t\tbr := bufio.NewReader(f)\n\t\tvar magic uint32\n\t\tif err := binary.Read(br, binary.LittleEndian, &magic); err != nil {\n\t\t\treturn nil, fmt.Errorf(\"reading magic from %s: %w\", filename, err)\n\t\t}\n\t\tif magic != snapFileMagic {\n\t\t\treturn nil, fmt.Errorf(\"invalid snapshot magic in %s: 0x%08X\", filename, magic)\n\t\t}\n\t\tvar fileFrom, fileTo int64\n\t\tif err := binary.Read(br, binary.LittleEndian, &fileFrom); err != nil {\n\t\t\treturn nil, fmt.Errorf(\"reading from-timestamp from %s: %w\", filename, err)\n\t\t}\n\t\tif err := binary.Read(br, binary.LittleEndian, &fileTo); err != nil {\n\t\t\treturn nil, fmt.Errorf(\"reading to-timestamp from %s: %w\", filename, err)\n\t\t}\n\t\tcf, err := readBinaryLevel(br)\n\t\tif err != nil {\n\t\t\treturn nil, fmt.Errorf(\"reading binary level from %s: %w\", filename, err)\n\t\t}\n\t\tcf.From = fileFrom\n\t\tcf.To = fileTo\n\t\treturn cf, nil\n\n\tdefault:\n\t\treturn nil, fmt.Errorf(\"unsupported checkpoint extension: %s\", ext)\n\t}\n}\n\n// loadCheckpointFiles reads checkpoint files for a host directory and returns\n// the loaded CheckpointFiles and their filenames. Processes one file at a time\n// to avoid holding all checkpoint data in memory simultaneously.\nfunc loadCheckpointFiles(dir string, from int64) ([]*CheckpointFile, []string, error) {\n\tentries, err := os.ReadDir(dir)\n\tif err != nil {\n\t\treturn nil, nil, err\n\t}\n\n\tfiles, err := findFiles(entries, from, false)\n\tif err != nil {\n\t\treturn nil, nil, err\n\t}\n\n\tif len(files) == 0 {\n\t\treturn nil, nil, nil\n\t}\n\n\tvar checkpoints []*CheckpointFile\n\tvar processedFiles []string\n\n\tfor _, checkpoint := range files {\n\t\tfilename := filepath.Join(dir, checkpoint)\n\t\tcf, err := loadCheckpointFileFromDisk(filename)\n\t\tif err != nil {\n\t\t\tcontinue\n\t\t}\n\t\tcheckpoints = append(checkpoints, cf)\n\t\tprocessedFiles = append(processedFiles, checkpoint)\n\t}\n\n\treturn checkpoints, processedFiles, nil\n}\n","structuredPatch":[{"oldStart":99,"oldLines":7,"newStart":99,"newLines":7,"lines":[" "," // WriteCheckpointFile streams a CheckpointFile tree directly to Parquet rows,"," // writing metrics in sorted order without materializing all rows in memory.","-// Produces one row group per call (typically one host's data).","+// Call FlushRowGroup() after writing all checkpoint files for a host."," func (w *parquetArchiveWriter) WriteCheckpointFile(cf *CheckpointFile, cluster, hostname, scope, scopeID string) error {"," w.writeLevel(cf, cluster, hostname, scope, scopeID)"," "]}],"userModified":false,"replaceAll":false},"sourceToolAssistantUUID":"bc65928d-4da1-460a-a182-cebe175873fc","userType":"external","entrypoint":"cli","cwd":"/Users/jan/prg/ClusterCockpit/cc-backend","sessionId":"0696ef34-7ff1-4c1e-9103-ffbca94f3ebd","version":"2.1.80","gitBranch":"hotfix","slug":"agile-napping-otter"}
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{"parentUuid":"c71b2767-670c-419d-9b2c-a11e04b289f7","isSidechain":false,"type":"progress","data":{"type":"hook_progress","hookEvent":"PostToolUse","hookName":"PostToolUse:Read","command":"callback"},"parentToolUseID":"toolu_01D8Csi7PHn6ASYXtCihdpbQ","toolUseID":"toolu_01D8Csi7PHn6ASYXtCihdpbQ","timestamp":"2026-03-23T05:20:13.658Z","uuid":"f389a37f-e656-4cd6-9719-28684735e770","userType":"external","entrypoint":"cli","cwd":"/Users/jan/prg/ClusterCockpit/cc-backend","sessionId":"0696ef34-7ff1-4c1e-9103-ffbca94f3ebd","version":"2.1.80","gitBranch":"hotfix","slug":"agile-napping-otter"}
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{"parentUuid":"c71b2767-670c-419d-9b2c-a11e04b289f7","isSidechain":false,"promptId":"4c9038e2-c763-4f23-82bf-037c28776776","type":"user","message":{"role":"user","content":[{"tool_use_id":"toolu_01D8Csi7PHn6ASYXtCihdpbQ","type":"tool_result","content":" 268→\t\tfor r := range results {\n 269→\t\t\tif writeErr == nil {\n 270→\t\t\t\t// Stream each checkpoint file directly to parquet rows.\n 271→\t\t\t\t// Each checkpoint is processed and discarded before the next.\n 272→\t\t\t\tfor _, cf := range r.checkpoints {\n 273→\t\t\t\t\tif err := writer.WriteCheckpointFile(cf, cluster, r.hostname, \"node\", \"\"); err != nil {\n 274→\t\t\t\t\t\twriteErr = err\n 275→\t\t\t\t\t\tbreak\n 276→\t\t\t\t\t}\n 277→\t\t\t\t}\n 278→\t\t\t}\n 279→\t\t\t// Always track files for deletion (even if write failed, we still drain)\n 280→\t\t\ttoDelete = append(toDelete, deleteItem{dir: r.dir, files: r.files})\n 281→\t\t}\n 282→\n 283→\t\tif err := writer.Close(); err != nil && writeErr == nil {\n 284→\t\t\twriteErr = err\n 285→\t\t}\n 286→\n 287→\t\tif errs > 0 {"}]},"uuid":"f5a6f64f-5a38-4105-8321-33722f26ddff","timestamp":"2026-03-23T05:20:13.646Z","toolUseResult":{"type":"text","file":{"filePath":"/Users/jan/prg/ClusterCockpit/cc-backend/pkg/metricstore/archive.go","content":"\t\tfor r := range results {\n\t\t\tif writeErr == nil {\n\t\t\t\t// Stream each checkpoint file directly to parquet rows.\n\t\t\t\t// Each checkpoint is processed and discarded before the next.\n\t\t\t\tfor _, cf := range r.checkpoints {\n\t\t\t\t\tif err := writer.WriteCheckpointFile(cf, cluster, r.hostname, \"node\", \"\"); err != nil {\n\t\t\t\t\t\twriteErr = err\n\t\t\t\t\t\tbreak\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t}\n\t\t\t// Always track files for deletion (even if write failed, we still drain)\n\t\t\ttoDelete = append(toDelete, deleteItem{dir: r.dir, files: r.files})\n\t\t}\n\n\t\tif err := writer.Close(); err != nil && writeErr == nil {\n\t\t\twriteErr = err\n\t\t}\n\n\t\tif errs > 0 {","numLines":20,"startLine":268,"totalLines":321}},"sourceToolAssistantUUID":"c71b2767-670c-419d-9b2c-a11e04b289f7","userType":"external","entrypoint":"cli","cwd":"/Users/jan/prg/ClusterCockpit/cc-backend","sessionId":"0696ef34-7ff1-4c1e-9103-ffbca94f3ebd","version":"2.1.80","gitBranch":"hotfix","slug":"agile-napping-otter"}
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{"parentUuid":"f5a6f64f-5a38-4105-8321-33722f26ddff","isSidechain":false,"message":{"model":"claude-opus-4-6","id":"msg_01LvTR4gP7Cuh7hsagJBohVn","type":"message","role":"assistant","content":[{"type":"text","text":"I see — the indentation uses tabs. Let me match exactly."}],"stop_reason":null,"stop_sequence":null,"usage":{"input_tokens":1,"cache_creation_input_tokens":751,"cache_read_input_tokens":25514,"cache_creation":{"ephemeral_5m_input_tokens":0,"ephemeral_1h_input_tokens":751},"output_tokens":1,"service_tier":"standard","inference_geo":"not_available"}},"requestId":"req_011CZKSzeKCL9jjmpi8cdGp2","type":"assistant","uuid":"ca0524bd-1cba-4858-922a-d57e3445be24","timestamp":"2026-03-23T05:20:16.269Z","userType":"external","entrypoint":"cli","cwd":"/Users/jan/prg/ClusterCockpit/cc-backend","sessionId":"0696ef34-7ff1-4c1e-9103-ffbca94f3ebd","version":"2.1.80","gitBranch":"hotfix","slug":"agile-napping-otter"}
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{"parentUuid":"ca0524bd-1cba-4858-922a-d57e3445be24","isSidechain":false,"message":{"model":"claude-opus-4-6","id":"msg_01LvTR4gP7Cuh7hsagJBohVn","type":"message","role":"assistant","content":[{"type":"tool_use","id":"toolu_01WGJv5Kk7Rg4989UxLYAupF","name":"Edit","input":{"replace_all":false,"file_path":"/Users/jan/prg/ClusterCockpit/cc-backend/pkg/metricstore/archive.go","old_string":"\t\tif writeErr == nil {\n\t\t\t// Stream each checkpoint file directly to parquet rows.\n\t\t\t// Each checkpoint is processed and discarded before the next.\n\t\t\tfor _, cf := range r.checkpoints {\n\t\t\t\tif err := writer.WriteCheckpointFile(cf, cluster, r.hostname, \"node\", \"\"); err != nil {\n\t\t\t\t\twriteErr = err\n\t\t\t\t\tbreak\n\t\t\t\t}\n\t\t\t}\n\t\t}","new_string":"\t\tif writeErr == nil {\n\t\t\t// Stream each checkpoint file directly to parquet rows.\n\t\t\t// Each checkpoint is processed and discarded before the next.\n\t\t\tfor _, cf := range r.checkpoints {\n\t\t\t\tif err := writer.WriteCheckpointFile(cf, cluster, r.hostname, \"node\", \"\"); err != nil {\n\t\t\t\t\twriteErr = err\n\t\t\t\t\tbreak\n\t\t\t\t}\n\t\t\t}\n\t\t\t// Flush once per host to keep row group count within parquet limits.\n\t\t\tif writeErr == nil {\n\t\t\t\tif err := writer.FlushRowGroup(); err != nil {\n\t\t\t\t\twriteErr = err\n\t\t\t\t}\n\t\t\t}\n\t\t}"},"caller":{"type":"direct"}}],"stop_reason":"tool_use","stop_sequence":null,"usage":{"input_tokens":1,"cache_creation_input_tokens":751,"cache_read_input_tokens":25514,"output_tokens":370,"server_tool_use":{"web_search_requests":0,"web_fetch_requests":0},"service_tier":"standard","cache_creation":{"ephemeral_1h_input_tokens":751,"ephemeral_5m_input_tokens":0},"inference_geo":"","iterations":[],"speed":"standard"}},"requestId":"req_011CZKSzeKCL9jjmpi8cdGp2","type":"assistant","uuid":"de0c5c36-7dd3-47de-9da9-480e60f1f784","timestamp":"2026-03-23T05:20:19.055Z","userType":"external","entrypoint":"cli","cwd":"/Users/jan/prg/ClusterCockpit/cc-backend","sessionId":"0696ef34-7ff1-4c1e-9103-ffbca94f3ebd","version":"2.1.80","gitBranch":"hotfix","slug":"agile-napping-otter"}
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||
{"parentUuid":"de0c5c36-7dd3-47de-9da9-480e60f1f784","isSidechain":false,"promptId":"4c9038e2-c763-4f23-82bf-037c28776776","type":"user","message":{"role":"user","content":[{"type":"tool_result","content":"<tool_use_error>String to replace not found in file.\nString: \t\tif writeErr == nil {\n\t\t\t// Stream each checkpoint file directly to parquet rows.\n\t\t\t// Each checkpoint is processed and discarded before the next.\n\t\t\tfor _, cf := range r.checkpoints {\n\t\t\t\tif err := writer.WriteCheckpointFile(cf, cluster, r.hostname, \"node\", \"\"); err != nil {\n\t\t\t\t\twriteErr = err\n\t\t\t\t\tbreak\n\t\t\t\t}\n\t\t\t}\n\t\t}</tool_use_error>","is_error":true,"tool_use_id":"toolu_01WGJv5Kk7Rg4989UxLYAupF"}]},"uuid":"7eb4679f-913f-4975-ab50-3bb0d431f180","timestamp":"2026-03-23T05:20:19.059Z","toolUseResult":"Error: String to replace not found in file.\nString: \t\tif writeErr == nil {\n\t\t\t// Stream each checkpoint file directly to parquet rows.\n\t\t\t// Each checkpoint is processed and discarded before the next.\n\t\t\tfor _, cf := range r.checkpoints {\n\t\t\t\tif err := writer.WriteCheckpointFile(cf, cluster, r.hostname, \"node\", \"\"); err != nil {\n\t\t\t\t\twriteErr = err\n\t\t\t\t\tbreak\n\t\t\t\t}\n\t\t\t}\n\t\t}","sourceToolAssistantUUID":"de0c5c36-7dd3-47de-9da9-480e60f1f784","userType":"external","entrypoint":"cli","cwd":"/Users/jan/prg/ClusterCockpit/cc-backend","sessionId":"0696ef34-7ff1-4c1e-9103-ffbca94f3ebd","version":"2.1.80","gitBranch":"hotfix","slug":"agile-napping-otter"}
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||
{"parentUuid":"7eb4679f-913f-4975-ab50-3bb0d431f180","isSidechain":false,"message":{"model":"claude-opus-4-6","id":"msg_012mnFLv6wVvMdrKnxmTEwf3","type":"message","role":"assistant","content":[{"type":"tool_use","id":"toolu_01WgFo3cTm4ZJnrJc2xCFspy","name":"Bash","input":{"command":"cat -A /Users/jan/prg/ClusterCockpit/cc-backend/pkg/metricstore/archive.go | head -282 | tail -15","description":"Check exact whitespace characters in file"},"caller":{"type":"direct"}}],"stop_reason":"tool_use","stop_sequence":null,"usage":{"input_tokens":1,"cache_creation_input_tokens":526,"cache_read_input_tokens":26265,"output_tokens":113,"server_tool_use":{"web_search_requests":0,"web_fetch_requests":0},"service_tier":"standard","cache_creation":{"ephemeral_1h_input_tokens":526,"ephemeral_5m_input_tokens":0},"inference_geo":"","iterations":[],"speed":"standard"}},"requestId":"req_011CZKT13aRYht4as4Xh1gUb","type":"assistant","uuid":"af6bc21e-bfee-44df-a357-ba5b21d802f2","timestamp":"2026-03-23T05:20:21.762Z","userType":"external","entrypoint":"cli","cwd":"/Users/jan/prg/ClusterCockpit/cc-backend","sessionId":"0696ef34-7ff1-4c1e-9103-ffbca94f3ebd","version":"2.1.80","gitBranch":"hotfix","slug":"agile-napping-otter"}
|
||
{"parentUuid":"af6bc21e-bfee-44df-a357-ba5b21d802f2","isSidechain":false,"promptId":"4c9038e2-c763-4f23-82bf-037c28776776","type":"user","message":{"role":"user","content":[{"tool_use_id":"toolu_01WgFo3cTm4ZJnrJc2xCFspy","type":"tool_result","content":"cat: illegal option -- A\nusage: cat [-belnstuv] [file ...]","is_error":false}]},"uuid":"4c72c141-7a39-4245-b73e-4f0d23151571","timestamp":"2026-03-23T05:20:21.815Z","toolUseResult":{"stdout":"cat: illegal option -- A\nusage: cat [-belnstuv] [file ...]","stderr":"","interrupted":false,"isImage":false,"noOutputExpected":false},"sourceToolAssistantUUID":"af6bc21e-bfee-44df-a357-ba5b21d802f2","userType":"external","entrypoint":"cli","cwd":"/Users/jan/prg/ClusterCockpit/cc-backend","sessionId":"0696ef34-7ff1-4c1e-9103-ffbca94f3ebd","version":"2.1.80","gitBranch":"hotfix","slug":"agile-napping-otter"}
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||
{"parentUuid":"4c72c141-7a39-4245-b73e-4f0d23151571","isSidechain":false,"message":{"model":"claude-opus-4-6","id":"msg_01WP1U3reScuj9673kKcv6kH","type":"message","role":"assistant","content":[{"type":"tool_use","id":"toolu_01E8yDSQoTKzoizUcVXHAdrx","name":"Bash","input":{"command":"sed -n '268,281p' /Users/jan/prg/ClusterCockpit/cc-backend/pkg/metricstore/archive.go | cat -v","description":"Show whitespace chars in lines 268-281"},"caller":{"type":"direct"}}],"stop_reason":null,"stop_sequence":null,"usage":{"input_tokens":1,"cache_creation_input_tokens":145,"cache_read_input_tokens":26791,"cache_creation":{"ephemeral_5m_input_tokens":0,"ephemeral_1h_input_tokens":145},"output_tokens":60,"service_tier":"standard","inference_geo":"not_available"}},"requestId":"req_011CZKT1F8hjugeL4ioHf9LH","type":"assistant","uuid":"44785db8-786b-48ea-903f-303fbc9c4db6","timestamp":"2026-03-23T05:20:24.650Z","userType":"external","entrypoint":"cli","cwd":"/Users/jan/prg/ClusterCockpit/cc-backend","sessionId":"0696ef34-7ff1-4c1e-9103-ffbca94f3ebd","version":"2.1.80","gitBranch":"hotfix","slug":"agile-napping-otter"}
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{"parentUuid":"44785db8-786b-48ea-903f-303fbc9c4db6","isSidechain":false,"promptId":"4c9038e2-c763-4f23-82bf-037c28776776","type":"user","message":{"role":"user","content":[{"tool_use_id":"toolu_01E8yDSQoTKzoizUcVXHAdrx","type":"tool_result","content":"\t\tfor r := range results {\n\t\t\tif writeErr == nil {\n\t\t\t\t// Stream each checkpoint file directly to parquet rows.\n\t\t\t\t// Each checkpoint is processed and discarded before the next.\n\t\t\t\tfor _, cf := range r.checkpoints {\n\t\t\t\t\tif err := writer.WriteCheckpointFile(cf, cluster, r.hostname, \"node\", \"\"); err != nil {\n\t\t\t\t\t\twriteErr = err\n\t\t\t\t\t\tbreak\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t}\n\t\t\t// Always track files for deletion (even if write failed, we still drain)\n\t\t\ttoDelete = append(toDelete, deleteItem{dir: r.dir, files: r.files})\n\t\t}","is_error":false}]},"uuid":"dba4f52b-9f8d-4ae4-81f5-d505be346a7d","timestamp":"2026-03-23T05:22:44.785Z","toolUseResult":{"stdout":"\t\tfor r := range results {\n\t\t\tif writeErr == nil {\n\t\t\t\t// Stream each checkpoint file directly to parquet rows.\n\t\t\t\t// Each checkpoint is processed and discarded before the next.\n\t\t\t\tfor _, cf := range r.checkpoints {\n\t\t\t\t\tif err := writer.WriteCheckpointFile(cf, cluster, r.hostname, \"node\", \"\"); err != nil {\n\t\t\t\t\t\twriteErr = err\n\t\t\t\t\t\tbreak\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t}\n\t\t\t// Always track files for deletion (even if write failed, we still drain)\n\t\t\ttoDelete = append(toDelete, deleteItem{dir: r.dir, files: r.files})\n\t\t}","stderr":"","interrupted":false,"isImage":false,"noOutputExpected":false},"sourceToolAssistantUUID":"44785db8-786b-48ea-903f-303fbc9c4db6","userType":"external","entrypoint":"cli","cwd":"/Users/jan/prg/ClusterCockpit/cc-backend","sessionId":"0696ef34-7ff1-4c1e-9103-ffbca94f3ebd","version":"2.1.80","gitBranch":"hotfix","slug":"agile-napping-otter"}
|
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{"parentUuid":"dba4f52b-9f8d-4ae4-81f5-d505be346a7d","isSidechain":false,"message":{"model":"claude-opus-4-6","id":"msg_01BLXYvJ8W4h1GFKxvZsXFT7","type":"message","role":"assistant","content":[{"type":"text","text":"The file uses tabs. Let me try a different approach."}],"stop_reason":null,"stop_sequence":null,"usage":{"input_tokens":1,"cache_creation_input_tokens":386,"cache_read_input_tokens":26936,"cache_creation":{"ephemeral_5m_input_tokens":0,"ephemeral_1h_input_tokens":386},"output_tokens":1,"service_tier":"standard","inference_geo":"not_available"}},"requestId":"req_011CZKTBnT9K7fevcaqkUL2q","type":"assistant","uuid":"96387fff-a854-4638-b70f-206b2779d0c4","timestamp":"2026-03-23T05:22:46.752Z","userType":"external","entrypoint":"cli","cwd":"/Users/jan/prg/ClusterCockpit/cc-backend","sessionId":"0696ef34-7ff1-4c1e-9103-ffbca94f3ebd","version":"2.1.80","gitBranch":"hotfix","slug":"agile-napping-otter"}
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{"parentUuid":"96387fff-a854-4638-b70f-206b2779d0c4","isSidechain":false,"message":{"model":"claude-opus-4-6","id":"msg_01BLXYvJ8W4h1GFKxvZsXFT7","type":"message","role":"assistant","content":[{"type":"tool_use","id":"toolu_01APzSxZeEBbcFfqr6VSnMLE","name":"Bash","input":{"command":"hexdump -C /Users/jan/prg/ClusterCockpit/cc-backend/pkg/metricstore/archive.go | grep -A2 \"268\\|269\\|270\" | head -5","description":"Check if file uses tabs"},"caller":{"type":"direct"}}],"stop_reason":"tool_use","stop_sequence":null,"usage":{"input_tokens":1,"cache_creation_input_tokens":386,"cache_read_input_tokens":26936,"output_tokens":136,"server_tool_use":{"web_search_requests":0,"web_fetch_requests":0},"service_tier":"standard","cache_creation":{"ephemeral_1h_input_tokens":386,"ephemeral_5m_input_tokens":0},"inference_geo":"","iterations":[],"speed":"standard"}},"requestId":"req_011CZKTBnT9K7fevcaqkUL2q","type":"assistant","uuid":"601c9922-a342-4320-9b1f-22b85de12fb0","timestamp":"2026-03-23T05:22:47.815Z","userType":"external","entrypoint":"cli","cwd":"/Users/jan/prg/ClusterCockpit/cc-backend","sessionId":"0696ef34-7ff1-4c1e-9103-ffbca94f3ebd","version":"2.1.80","gitBranch":"hotfix","slug":"agile-napping-otter"}
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{"parentUuid":"601c9922-a342-4320-9b1f-22b85de12fb0","isSidechain":false,"promptId":"4c9038e2-c763-4f23-82bf-037c28776776","type":"user","message":{"role":"user","content":[{"tool_use_id":"toolu_01APzSxZeEBbcFfqr6VSnMLE","type":"tool_result","content":"00000270 6e 55 70 57 6f 72 6b 65 72 28 77 67 2c 20 63 74 |nUpWorker(wg, ct|\n00000280 78 2c 0a 09 09 09 4b 65 79 73 2e 52 65 74 65 6e |x,....Keys.Reten|\n00000290 74 69 6f 6e 49 6e 4d 65 6d 6f 72 79 2c 0a 09 09 |tionInMemory,...|\n--\n00001270 20 74 69 6d 65 2e 4e 6f 77 28 29 0a 0a 09 63 6c | time.Now()...cl|","is_error":false}]},"uuid":"576cff48-696a-4df5-abe6-637754712693","timestamp":"2026-03-23T05:22:47.845Z","toolUseResult":{"stdout":"00000270 6e 55 70 57 6f 72 6b 65 72 28 77 67 2c 20 63 74 |nUpWorker(wg, ct|\n00000280 78 2c 0a 09 09 09 4b 65 79 73 2e 52 65 74 65 6e |x,....Keys.Reten|\n00000290 74 69 6f 6e 49 6e 4d 65 6d 6f 72 79 2c 0a 09 09 |tionInMemory,...|\n--\n00001270 20 74 69 6d 65 2e 4e 6f 77 28 29 0a 0a 09 63 6c | time.Now()...cl|","stderr":"","interrupted":false,"isImage":false,"noOutputExpected":false},"sourceToolAssistantUUID":"601c9922-a342-4320-9b1f-22b85de12fb0","userType":"external","entrypoint":"cli","cwd":"/Users/jan/prg/ClusterCockpit/cc-backend","sessionId":"0696ef34-7ff1-4c1e-9103-ffbca94f3ebd","version":"2.1.80","gitBranch":"hotfix","slug":"agile-napping-otter"}
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{"parentUuid":"576cff48-696a-4df5-abe6-637754712693","isSidechain":false,"message":{"model":"claude-opus-4-6","id":"msg_01EbPQBXr6mWEcpcr7BXUD8k","type":"message","role":"assistant","content":[{"type":"text","text":"It uses tabs. The Read tool output already showed them as spaces in the line-numbered view but they're actually tabs. Let me use a direct write approach."}],"stop_reason":null,"stop_sequence":null,"usage":{"input_tokens":1,"cache_creation_input_tokens":358,"cache_read_input_tokens":27322,"cache_creation":{"ephemeral_5m_input_tokens":0,"ephemeral_1h_input_tokens":358},"output_tokens":1,"service_tier":"standard","inference_geo":"not_available"}},"requestId":"req_011CZKTC1YSnwnDP5Q86QNGo","type":"assistant","uuid":"c52a44c9-f635-4e0a-99bd-217a49843b6c","timestamp":"2026-03-23T05:22:50.672Z","userType":"external","entrypoint":"cli","cwd":"/Users/jan/prg/ClusterCockpit/cc-backend","sessionId":"0696ef34-7ff1-4c1e-9103-ffbca94f3ebd","version":"2.1.80","gitBranch":"hotfix","slug":"agile-napping-otter"}
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{"parentUuid":"c52a44c9-f635-4e0a-99bd-217a49843b6c","isSidechain":false,"message":{"model":"claude-opus-4-6","id":"msg_01EbPQBXr6mWEcpcr7BXUD8k","type":"message","role":"assistant","content":[{"type":"tool_use","id":"toolu_015TGzLzNL2emNaCcNhENxy3","name":"Read","input":{"file_path":"/Users/jan/prg/ClusterCockpit/cc-backend/pkg/metricstore/archive.go","offset":268,"limit":14},"caller":{"type":"direct"}}],"stop_reason":"tool_use","stop_sequence":null,"usage":{"input_tokens":1,"cache_creation_input_tokens":358,"cache_read_input_tokens":27322,"output_tokens":147,"server_tool_use":{"web_search_requests":0,"web_fetch_requests":0},"service_tier":"standard","cache_creation":{"ephemeral_1h_input_tokens":358,"ephemeral_5m_input_tokens":0},"inference_geo":"","iterations":[],"speed":"standard"}},"requestId":"req_011CZKTC1YSnwnDP5Q86QNGo","type":"assistant","uuid":"f2bb8b74-498d-457d-bde9-3c64319b2e97","timestamp":"2026-03-23T05:22:51.141Z","userType":"external","entrypoint":"cli","cwd":"/Users/jan/prg/ClusterCockpit/cc-backend","sessionId":"0696ef34-7ff1-4c1e-9103-ffbca94f3ebd","version":"2.1.80","gitBranch":"hotfix","slug":"agile-napping-otter"}
|
||
{"parentUuid":"f2bb8b74-498d-457d-bde9-3c64319b2e97","isSidechain":false,"type":"progress","data":{"type":"hook_progress","hookEvent":"PostToolUse","hookName":"PostToolUse:Read","command":"callback"},"parentToolUseID":"toolu_015TGzLzNL2emNaCcNhENxy3","toolUseID":"toolu_015TGzLzNL2emNaCcNhENxy3","timestamp":"2026-03-23T05:22:51.145Z","uuid":"39aeb012-b2fe-41f1-aad9-49eebfdce6e2","userType":"external","entrypoint":"cli","cwd":"/Users/jan/prg/ClusterCockpit/cc-backend","sessionId":"0696ef34-7ff1-4c1e-9103-ffbca94f3ebd","version":"2.1.80","gitBranch":"hotfix","slug":"agile-napping-otter"}
|
||
{"parentUuid":"f2bb8b74-498d-457d-bde9-3c64319b2e97","isSidechain":false,"promptId":"4c9038e2-c763-4f23-82bf-037c28776776","type":"user","message":{"role":"user","content":[{"tool_use_id":"toolu_015TGzLzNL2emNaCcNhENxy3","type":"tool_result","content":" 268→\t\tfor r := range results {\n 269→\t\t\tif writeErr == nil {\n 270→\t\t\t\t// Stream each checkpoint file directly to parquet rows.\n 271→\t\t\t\t// Each checkpoint is processed and discarded before the next.\n 272→\t\t\t\tfor _, cf := range r.checkpoints {\n 273→\t\t\t\t\tif err := writer.WriteCheckpointFile(cf, cluster, r.hostname, \"node\", \"\"); err != nil {\n 274→\t\t\t\t\t\twriteErr = err\n 275→\t\t\t\t\t\tbreak\n 276→\t\t\t\t\t}\n 277→\t\t\t\t}\n 278→\t\t\t}\n 279→\t\t\t// Always track files for deletion (even if write failed, we still drain)\n 280→\t\t\ttoDelete = append(toDelete, deleteItem{dir: r.dir, files: r.files})\n 281→\t\t}"}]},"uuid":"9d5a99f9-e776-449b-a46f-9802b7c37f5b","timestamp":"2026-03-23T05:22:51.145Z","toolUseResult":{"type":"text","file":{"filePath":"/Users/jan/prg/ClusterCockpit/cc-backend/pkg/metricstore/archive.go","content":"\t\tfor r := range results {\n\t\t\tif writeErr == nil {\n\t\t\t\t// Stream each checkpoint file directly to parquet rows.\n\t\t\t\t// Each checkpoint is processed and discarded before the next.\n\t\t\t\tfor _, cf := range r.checkpoints {\n\t\t\t\t\tif err := writer.WriteCheckpointFile(cf, cluster, r.hostname, \"node\", \"\"); err != nil {\n\t\t\t\t\t\twriteErr = err\n\t\t\t\t\t\tbreak\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t}\n\t\t\t// Always track files for deletion (even if write failed, we still drain)\n\t\t\ttoDelete = append(toDelete, deleteItem{dir: r.dir, files: r.files})\n\t\t}","numLines":14,"startLine":268,"totalLines":321}},"sourceToolAssistantUUID":"f2bb8b74-498d-457d-bde9-3c64319b2e97","userType":"external","entrypoint":"cli","cwd":"/Users/jan/prg/ClusterCockpit/cc-backend","sessionId":"0696ef34-7ff1-4c1e-9103-ffbca94f3ebd","version":"2.1.80","gitBranch":"hotfix","slug":"agile-napping-otter"}
|
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{"parentUuid":"9d5a99f9-e776-449b-a46f-9802b7c37f5b","isSidechain":false,"message":{"model":"claude-opus-4-6","id":"msg_017VrqGjb38ZZgy96FfJWXte","type":"message","role":"assistant","content":[{"type":"tool_use","id":"toolu_014UFXgWYXzA4vfoehNhNucV","name":"Bash","input":{"command":"sed -n '277p' pkg/metricstore/archive.go | od -c | head -3","description":"Check exact chars on line 277"},"caller":{"type":"direct"}}],"stop_reason":"tool_use","stop_sequence":null,"usage":{"input_tokens":1,"cache_creation_input_tokens":348,"cache_read_input_tokens":27680,"output_tokens":117,"server_tool_use":{"web_search_requests":0,"web_fetch_requests":0},"service_tier":"standard","cache_creation":{"ephemeral_1h_input_tokens":348,"ephemeral_5m_input_tokens":0},"inference_geo":"","iterations":[],"speed":"standard"}},"requestId":"req_011CZKTCFfzyUBcgSWp5oL6F","type":"assistant","uuid":"1e07598c-9f21-4e8f-9fe8-4efbe2a176ea","timestamp":"2026-03-23T05:22:53.643Z","userType":"external","entrypoint":"cli","cwd":"/Users/jan/prg/ClusterCockpit/cc-backend","sessionId":"0696ef34-7ff1-4c1e-9103-ffbca94f3ebd","version":"2.1.80","gitBranch":"hotfix","slug":"agile-napping-otter"}
|
||
{"parentUuid":"1e07598c-9f21-4e8f-9fe8-4efbe2a176ea","isSidechain":false,"promptId":"4c9038e2-c763-4f23-82bf-037c28776776","type":"user","message":{"role":"user","content":[{"tool_use_id":"toolu_014UFXgWYXzA4vfoehNhNucV","type":"tool_result","content":"0000000 \\t \\t \\t \\t } \\n \n0000006","is_error":false}]},"uuid":"27ee3bda-8b40-4433-b3a3-a862bc1581d0","timestamp":"2026-03-23T05:22:59.242Z","toolUseResult":{"stdout":"0000000 \\t \\t \\t \\t } \\n \n0000006","stderr":"","interrupted":false,"isImage":false,"noOutputExpected":false},"sourceToolAssistantUUID":"1e07598c-9f21-4e8f-9fe8-4efbe2a176ea","userType":"external","entrypoint":"cli","cwd":"/Users/jan/prg/ClusterCockpit/cc-backend","sessionId":"0696ef34-7ff1-4c1e-9103-ffbca94f3ebd","version":"2.1.80","gitBranch":"hotfix","slug":"agile-napping-otter"}
|
||
{"parentUuid":"27ee3bda-8b40-4433-b3a3-a862bc1581d0","isSidechain":false,"message":{"model":"claude-opus-4-6","id":"msg_019aPPXZ2snXp1aJKeo3oDwy","type":"message","role":"assistant","content":[{"type":"text","text":"Tabs confirmed. Let me use sed to insert the flush lines after line 277."}],"stop_reason":null,"stop_sequence":null,"usage":{"input_tokens":1,"cache_creation_input_tokens":137,"cache_read_input_tokens":28028,"cache_creation":{"ephemeral_5m_input_tokens":0,"ephemeral_1h_input_tokens":137},"output_tokens":2,"service_tier":"standard","inference_geo":"not_available"}},"requestId":"req_011CZKTCrDPoMQ5YJd2cwoBS","type":"assistant","uuid":"513cffd9-a7df-4350-9335-b002cc7e2420","timestamp":"2026-03-23T05:23:01.506Z","userType":"external","entrypoint":"cli","cwd":"/Users/jan/prg/ClusterCockpit/cc-backend","sessionId":"0696ef34-7ff1-4c1e-9103-ffbca94f3ebd","version":"2.1.80","gitBranch":"hotfix","slug":"agile-napping-otter"}
|
||
{"parentUuid":"513cffd9-a7df-4350-9335-b002cc7e2420","isSidechain":false,"message":{"model":"claude-opus-4-6","id":"msg_019aPPXZ2snXp1aJKeo3oDwy","type":"message","role":"assistant","content":[{"type":"tool_use","id":"toolu_01Tdd9HMBMMHFWnnL4KR27KJ","name":"Bash","input":{"command":"sed -i '' '277a\\\n\\t\\t\\t\\t// Flush once per host to keep row group count within parquet limits.\\\n\\t\\t\\t\\tif writeErr == nil {\\\n\\t\\t\\t\\t\\tif err := writer.FlushRowGroup(); err != nil {\\\n\\t\\t\\t\\t\\t\\twriteErr = err\\\n\\t\\t\\t\\t\\t}\\\n\\t\\t\\t\\t}\n' pkg/metricstore/archive.go","description":"Insert FlushRowGroup call after line 277"},"caller":{"type":"direct"}}],"stop_reason":"tool_use","stop_sequence":null,"usage":{"input_tokens":1,"cache_creation_input_tokens":137,"cache_read_input_tokens":28028,"output_tokens":242,"server_tool_use":{"web_search_requests":0,"web_fetch_requests":0},"service_tier":"standard","cache_creation":{"ephemeral_1h_input_tokens":137,"ephemeral_5m_input_tokens":0},"inference_geo":"","iterations":[],"speed":"standard"}},"requestId":"req_011CZKTCrDPoMQ5YJd2cwoBS","type":"assistant","uuid":"21a1b438-bb39-452b-8ca6-3c75e3bad975","timestamp":"2026-03-23T05:23:03.787Z","userType":"external","entrypoint":"cli","cwd":"/Users/jan/prg/ClusterCockpit/cc-backend","sessionId":"0696ef34-7ff1-4c1e-9103-ffbca94f3ebd","version":"2.1.80","gitBranch":"hotfix","slug":"agile-napping-otter"}
|
||
{"parentUuid":"21a1b438-bb39-452b-8ca6-3c75e3bad975","isSidechain":false,"promptId":"4c9038e2-c763-4f23-82bf-037c28776776","type":"user","message":{"role":"user","content":[{"tool_use_id":"toolu_01Tdd9HMBMMHFWnnL4KR27KJ","type":"tool_result","content":"(Bash completed with no output)","is_error":false}]},"uuid":"9058d4a2-7742-4c65-830a-b1ab65d67682","timestamp":"2026-03-23T05:23:49.674Z","toolUseResult":{"stdout":"","stderr":"","interrupted":false,"isImage":false,"noOutputExpected":false},"sourceToolAssistantUUID":"21a1b438-bb39-452b-8ca6-3c75e3bad975","userType":"external","entrypoint":"cli","cwd":"/Users/jan/prg/ClusterCockpit/cc-backend","sessionId":"0696ef34-7ff1-4c1e-9103-ffbca94f3ebd","version":"2.1.80","gitBranch":"hotfix","slug":"agile-napping-otter"}
|
||
{"parentUuid":"9058d4a2-7742-4c65-830a-b1ab65d67682","isSidechain":false,"message":{"model":"claude-opus-4-6","id":"msg_01SADXbD5cs9D9kRdEnPqXNV","type":"message","role":"assistant","content":[{"type":"tool_use","id":"toolu_01DSKCToeR9ysEuTBp3ANN75","name":"Read","input":{"file_path":"/Users/jan/prg/ClusterCockpit/cc-backend/pkg/metricstore/archive.go","offset":268,"limit":20},"caller":{"type":"direct"}}],"stop_reason":"tool_use","stop_sequence":null,"usage":{"input_tokens":1,"cache_creation_input_tokens":241,"cache_read_input_tokens":28165,"output_tokens":113,"server_tool_use":{"web_search_requests":0,"web_fetch_requests":0},"service_tier":"standard","cache_creation":{"ephemeral_1h_input_tokens":241,"ephemeral_5m_input_tokens":0},"inference_geo":"","iterations":[],"speed":"standard"}},"requestId":"req_011CZKTGZrFhYWu5rFYBJ11E","type":"assistant","uuid":"8b7927d7-9bad-4f66-b05a-82975c2e127c","timestamp":"2026-03-23T05:23:51.537Z","userType":"external","entrypoint":"cli","cwd":"/Users/jan/prg/ClusterCockpit/cc-backend","sessionId":"0696ef34-7ff1-4c1e-9103-ffbca94f3ebd","version":"2.1.80","gitBranch":"hotfix","slug":"agile-napping-otter"}
|
||
{"parentUuid":"8b7927d7-9bad-4f66-b05a-82975c2e127c","isSidechain":false,"type":"progress","data":{"type":"hook_progress","hookEvent":"PostToolUse","hookName":"PostToolUse:Read","command":"callback"},"parentToolUseID":"toolu_01DSKCToeR9ysEuTBp3ANN75","toolUseID":"toolu_01DSKCToeR9ysEuTBp3ANN75","timestamp":"2026-03-23T05:23:51.549Z","uuid":"96d2e5a4-4992-402f-9188-cc4e174a2dbf","userType":"external","entrypoint":"cli","cwd":"/Users/jan/prg/ClusterCockpit/cc-backend","sessionId":"0696ef34-7ff1-4c1e-9103-ffbca94f3ebd","version":"2.1.80","gitBranch":"hotfix","slug":"agile-napping-otter"}
|
||
{"parentUuid":"8b7927d7-9bad-4f66-b05a-82975c2e127c","isSidechain":false,"promptId":"4c9038e2-c763-4f23-82bf-037c28776776","type":"user","message":{"role":"user","content":[{"tool_use_id":"toolu_01DSKCToeR9ysEuTBp3ANN75","type":"tool_result","content":" 268→\t\tfor r := range results {\n 269→\t\t\tif writeErr == nil {\n 270→\t\t\t\t// Stream each checkpoint file directly to parquet rows.\n 271→\t\t\t\t// Each checkpoint is processed and discarded before the next.\n 272→\t\t\t\tfor _, cf := range r.checkpoints {\n 273→\t\t\t\t\tif err := writer.WriteCheckpointFile(cf, cluster, r.hostname, \"node\", \"\"); err != nil {\n 274→\t\t\t\t\t\twriteErr = err\n 275→\t\t\t\t\t\tbreak\n 276→\t\t\t\t\t}\n 277→\t\t\t\t}\n 278→tttt// Flush once per host to keep row group count within parquet limits.\n 279→ttttif writeErr == nil {\n 280→tttttif err := writer.FlushRowGroup(); err != nil {\n 281→ttttttwriteErr = err\n 282→ttttt}\n 283→tttt}\n 284→\t\t\t}\n 285→\t\t\t// Always track files for deletion (even if write failed, we still drain)\n 286→\t\t\ttoDelete = append(toDelete, deleteItem{dir: r.dir, files: r.files})\n 287→\t\t}"}]},"uuid":"60e425f1-4e8b-4f00-87cf-ee680c1bfce0","timestamp":"2026-03-23T05:23:51.548Z","toolUseResult":{"type":"text","file":{"filePath":"/Users/jan/prg/ClusterCockpit/cc-backend/pkg/metricstore/archive.go","content":"\t\tfor r := range results {\n\t\t\tif writeErr == nil {\n\t\t\t\t// Stream each checkpoint file directly to parquet rows.\n\t\t\t\t// Each checkpoint is processed and discarded before the next.\n\t\t\t\tfor _, cf := range r.checkpoints {\n\t\t\t\t\tif err := writer.WriteCheckpointFile(cf, cluster, r.hostname, \"node\", \"\"); err != nil {\n\t\t\t\t\t\twriteErr = err\n\t\t\t\t\t\tbreak\n\t\t\t\t\t}\n\t\t\t\t}\ntttt// Flush once per host to keep row group count within parquet limits.\nttttif writeErr == nil {\ntttttif err := writer.FlushRowGroup(); err != nil {\nttttttwriteErr = err\nttttt}\ntttt}\n\t\t\t}\n\t\t\t// Always track files for deletion (even if write failed, we still drain)\n\t\t\ttoDelete = append(toDelete, deleteItem{dir: r.dir, files: r.files})\n\t\t}","numLines":20,"startLine":268,"totalLines":327}},"sourceToolAssistantUUID":"8b7927d7-9bad-4f66-b05a-82975c2e127c","userType":"external","entrypoint":"cli","cwd":"/Users/jan/prg/ClusterCockpit/cc-backend","sessionId":"0696ef34-7ff1-4c1e-9103-ffbca94f3ebd","version":"2.1.80","gitBranch":"hotfix","slug":"agile-napping-otter"}
|
||
{"parentUuid":"60e425f1-4e8b-4f00-87cf-ee680c1bfce0","isSidechain":false,"message":{"model":"claude-opus-4-6","id":"msg_011kzkNw3m6DMuPZdA3xF3SM","type":"message","role":"assistant","content":[{"type":"text","text":"The sed didn't expand \\t to tabs, it used literal 't'. Let me fix this properly."}],"stop_reason":null,"stop_sequence":null,"usage":{"input_tokens":1,"cache_creation_input_tokens":396,"cache_read_input_tokens":28406,"cache_creation":{"ephemeral_5m_input_tokens":0,"ephemeral_1h_input_tokens":396},"output_tokens":1,"service_tier":"standard","inference_geo":"not_available"}},"requestId":"req_011CZKTGixCECeqy75SWJDGF","type":"assistant","uuid":"1d8f0be2-83aa-4b2a-bdd5-f26ced1cbbce","timestamp":"2026-03-23T05:23:54.634Z","userType":"external","entrypoint":"cli","cwd":"/Users/jan/prg/ClusterCockpit/cc-backend","sessionId":"0696ef34-7ff1-4c1e-9103-ffbca94f3ebd","version":"2.1.80","gitBranch":"hotfix","slug":"agile-napping-otter"}
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||
{"parentUuid":"1d8f0be2-83aa-4b2a-bdd5-f26ced1cbbce","isSidechain":false,"message":{"model":"claude-opus-4-6","id":"msg_011kzkNw3m6DMuPZdA3xF3SM","type":"message","role":"assistant","content":[{"type":"tool_use","id":"toolu_01P51jGnzSCxrju4DVsbYbVH","name":"Read","input":{"file_path":"/Users/jan/prg/ClusterCockpit/cc-backend/pkg/metricstore/archive.go"},"caller":{"type":"direct"}}],"stop_reason":"tool_use","stop_sequence":null,"usage":{"input_tokens":1,"cache_creation_input_tokens":396,"cache_read_input_tokens":28406,"output_tokens":102,"server_tool_use":{"web_search_requests":0,"web_fetch_requests":0},"service_tier":"standard","cache_creation":{"ephemeral_1h_input_tokens":396,"ephemeral_5m_input_tokens":0},"inference_geo":"","iterations":[],"speed":"standard"}},"requestId":"req_011CZKTGixCECeqy75SWJDGF","type":"assistant","uuid":"b1ec97c7-a50b-40b3-95cc-0c03442b5333","timestamp":"2026-03-23T05:23:54.775Z","userType":"external","entrypoint":"cli","cwd":"/Users/jan/prg/ClusterCockpit/cc-backend","sessionId":"0696ef34-7ff1-4c1e-9103-ffbca94f3ebd","version":"2.1.80","gitBranch":"hotfix","slug":"agile-napping-otter"}
|
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{"parentUuid":"b1ec97c7-a50b-40b3-95cc-0c03442b5333","isSidechain":false,"type":"progress","data":{"type":"hook_progress","hookEvent":"PostToolUse","hookName":"PostToolUse:Read","command":"callback"},"parentToolUseID":"toolu_01P51jGnzSCxrju4DVsbYbVH","toolUseID":"toolu_01P51jGnzSCxrju4DVsbYbVH","timestamp":"2026-03-23T05:23:54.781Z","uuid":"77840681-0c18-494e-814b-dee3accfffeb","userType":"external","entrypoint":"cli","cwd":"/Users/jan/prg/ClusterCockpit/cc-backend","sessionId":"0696ef34-7ff1-4c1e-9103-ffbca94f3ebd","version":"2.1.80","gitBranch":"hotfix","slug":"agile-napping-otter"}
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||
{"parentUuid":"b1ec97c7-a50b-40b3-95cc-0c03442b5333","isSidechain":false,"promptId":"4c9038e2-c763-4f23-82bf-037c28776776","type":"user","message":{"role":"user","content":[{"tool_use_id":"toolu_01P51jGnzSCxrju4DVsbYbVH","type":"tool_result","content":" 1→// Copyright (C) NHR@FAU, University Erlangen-Nuremberg.\n 2→// All rights reserved. This file is part of cc-backend.\n 3→// Use of this source code is governed by a MIT-style\n 4→// license that can be found in the LICENSE file.\n 5→\n 6→package metricstore\n 7→\n 8→import (\n 9→\t\"context\"\n 10→\t\"errors\"\n 11→\t\"fmt\"\n 12→\t\"os\"\n 13→\t\"path/filepath\"\n 14→\t\"sync\"\n 15→\t\"sync/atomic\"\n 16→\t\"time\"\n 17→\n 18→\tcclog \"github.com/ClusterCockpit/cc-lib/v2/ccLogger\"\n 19→)\n 20→\n 21→// Worker for either Archiving or Deleting files\n 22→\n 23→func CleanUp(wg *sync.WaitGroup, ctx context.Context) {\n 24→\tif Keys.Cleanup.Mode == \"archive\" {\n 25→\t\tcclog.Info(\"[METRICSTORE]> enable archive cleanup to parquet\")\n 26→\t\t// Run as Archiver\n 27→\t\tcleanUpWorker(wg, ctx,\n 28→\t\t\tKeys.RetentionInMemory,\n 29→\t\t\t\"archiving\",\n 30→\t\t\tKeys.Cleanup.RootDir,\n 31→\t\t\tfalse,\n 32→\t\t)\n 33→\t} else {\n 34→\t\t// Run as Deleter\n 35→\t\tcleanUpWorker(wg, ctx,\n 36→\t\t\tKeys.RetentionInMemory,\n 37→\t\t\t\"deleting\",\n 38→\t\t\t\"\",\n 39→\t\t\ttrue,\n 40→\t\t)\n 41→\t}\n 42→}\n 43→\n 44→// cleanUpWorker takes simple values to configure what it does\n 45→func cleanUpWorker(wg *sync.WaitGroup, ctx context.Context, interval string, mode string, cleanupDir string, delete bool) {\n 46→\twg.Go(func() {\n 47→\t\td, err := time.ParseDuration(interval)\n 48→\t\tif err != nil {\n 49→\t\t\tcclog.Fatalf(\"[METRICSTORE]> error parsing %s interval duration: %v\\n\", mode, err)\n 50→\t\t}\n 51→\t\tif d <= 0 {\n 52→\t\t\treturn\n 53→\t\t}\n 54→\n 55→\t\tticker := time.NewTicker(d)\n 56→\t\tdefer ticker.Stop()\n 57→\n 58→\t\tfor {\n 59→\t\t\tselect {\n 60→\t\t\tcase <-ctx.Done():\n 61→\t\t\t\treturn\n 62→\t\t\tcase <-ticker.C:\n 63→\t\t\t\tt := time.Now().Add(-d)\n 64→\t\t\t\tcclog.Infof(\"[METRICSTORE]> start %s checkpoints (older than %s)...\", mode, t.Format(time.RFC3339))\n 65→\n 66→\t\t\t\tn, err := CleanupCheckpoints(Keys.Checkpoints.RootDir, cleanupDir, t.Unix(), delete)\n 67→\n 68→\t\t\t\tif err != nil {\n 69→\t\t\t\t\tcclog.Errorf(\"[METRICSTORE]> %s failed: %s\", mode, err.Error())\n 70→\t\t\t\t} else {\n 71→\t\t\t\t\tif delete {\n 72→\t\t\t\t\t\tcclog.Infof(\"[METRICSTORE]> done: %d checkpoints deleted\", n)\n 73→\t\t\t\t\t} else {\n 74→\t\t\t\t\t\tcclog.Infof(\"[METRICSTORE]> done: %d checkpoint files archived to parquet\", n)\n 75→\t\t\t\t\t}\n 76→\t\t\t\t}\n 77→\t\t\t}\n 78→\t\t}\n 79→\t})\n 80→}\n 81→\n 82→var ErrNoNewArchiveData error = errors.New(\"all data already archived\")\n 83→\n 84→// CleanupCheckpoints deletes or archives all checkpoint files older than `from`.\n 85→// When archiving, consolidates all hosts per cluster into a single Parquet file.\n 86→func CleanupCheckpoints(checkpointsDir, cleanupDir string, from int64, deleteInstead bool) (int, error) {\n 87→\tif deleteInstead {\n 88→\t\treturn deleteCheckpoints(checkpointsDir, from)\n 89→\t}\n 90→\n 91→\treturn archiveCheckpoints(checkpointsDir, cleanupDir, from)\n 92→}\n 93→\n 94→// deleteCheckpoints removes checkpoint files older than `from` across all clusters/hosts.\n 95→func deleteCheckpoints(checkpointsDir string, from int64) (int, error) {\n 96→\tentries1, err := os.ReadDir(checkpointsDir)\n 97→\tif err != nil {\n 98→\t\treturn 0, err\n 99→\t}\n 100→\n 101→\ttype workItem struct {\n 102→\t\tdir string\n 103→\t\tcluster, host string\n 104→\t}\n 105→\n 106→\tvar wg sync.WaitGroup\n 107→\tn, errs := int32(0), int32(0)\n 108→\twork := make(chan workItem, Keys.NumWorkers)\n 109→\n 110→\twg.Add(Keys.NumWorkers)\n 111→\tfor worker := 0; worker < Keys.NumWorkers; worker++ {\n 112→\t\tgo func() {\n 113→\t\t\tdefer wg.Done()\n 114→\t\t\tfor item := range work {\n 115→\t\t\t\tentries, err := os.ReadDir(item.dir)\n 116→\t\t\t\tif err != nil {\n 117→\t\t\t\t\tcclog.Errorf(\"error reading %s/%s: %s\", item.cluster, item.host, err.Error())\n 118→\t\t\t\t\tatomic.AddInt32(&errs, 1)\n 119→\t\t\t\t\tcontinue\n 120→\t\t\t\t}\n 121→\n 122→\t\t\t\tfiles, err := findFiles(entries, from, false)\n 123→\t\t\t\tif err != nil {\n 124→\t\t\t\t\tcclog.Errorf(\"error finding files in %s/%s: %s\", item.cluster, item.host, err.Error())\n 125→\t\t\t\t\tatomic.AddInt32(&errs, 1)\n 126→\t\t\t\t\tcontinue\n 127→\t\t\t\t}\n 128→\n 129→\t\t\t\tfor _, checkpoint := range files {\n 130→\t\t\t\t\tif err := os.Remove(filepath.Join(item.dir, checkpoint)); err != nil {\n 131→\t\t\t\t\t\tcclog.Errorf(\"error deleting %s/%s/%s: %s\", item.cluster, item.host, checkpoint, err.Error())\n 132→\t\t\t\t\t\tatomic.AddInt32(&errs, 1)\n 133→\t\t\t\t\t} else {\n 134→\t\t\t\t\t\tatomic.AddInt32(&n, 1)\n 135→\t\t\t\t\t}\n 136→\t\t\t\t}\n 137→\t\t\t}\n 138→\t\t}()\n 139→\t}\n 140→\n 141→\tfor _, de1 := range entries1 {\n 142→\t\tentries2, e := os.ReadDir(filepath.Join(checkpointsDir, de1.Name()))\n 143→\t\tif e != nil {\n 144→\t\t\terr = e\n 145→\t\t\tcontinue\n 146→\t\t}\n 147→\n 148→\t\tfor _, de2 := range entries2 {\n 149→\t\t\twork <- workItem{\n 150→\t\t\t\tdir: filepath.Join(checkpointsDir, de1.Name(), de2.Name()),\n 151→\t\t\t\tcluster: de1.Name(),\n 152→\t\t\t\thost: de2.Name(),\n 153→\t\t\t}\n 154→\t\t}\n 155→\t}\n 156→\n 157→\tclose(work)\n 158→\twg.Wait()\n 159→\n 160→\tif err != nil {\n 161→\t\treturn int(n), err\n 162→\t}\n 163→\tif errs > 0 {\n 164→\t\treturn int(n), fmt.Errorf(\"%d errors happened while deleting (%d successes)\", errs, n)\n 165→\t}\n 166→\treturn int(n), nil\n 167→}\n 168→\n 169→// archiveCheckpoints archives checkpoint files to Parquet format.\n 170→// Produces one Parquet file per cluster: <cleanupDir>/<cluster>/<timestamp>.parquet\n 171→// Workers load checkpoint files from disk and send CheckpointFile trees on a\n 172→// back-pressured channel. The main thread streams each tree directly to Parquet\n 173→// rows without materializing all rows in memory.\n 174→func archiveCheckpoints(checkpointsDir, cleanupDir string, from int64) (int, error) {\n 175→\tcclog.Info(\"[METRICSTORE]> start archiving checkpoints to parquet\")\n 176→\tstartTime := time.Now()\n 177→\n 178→\tclusterEntries, err := os.ReadDir(checkpointsDir)\n 179→\tif err != nil {\n 180→\t\treturn 0, err\n 181→\t}\n 182→\n 183→\ttotalFiles := 0\n 184→\n 185→\tfor _, clusterEntry := range clusterEntries {\n 186→\t\tif !clusterEntry.IsDir() {\n 187→\t\t\tcontinue\n 188→\t\t}\n 189→\n 190→\t\tcluster := clusterEntry.Name()\n 191→\t\thostEntries, err := os.ReadDir(filepath.Join(checkpointsDir, cluster))\n 192→\t\tif err != nil {\n 193→\t\t\treturn totalFiles, err\n 194→\t\t}\n 195→\n 196→\t\t// Workers load checkpoint files from disk; main thread writes to parquet.\n 197→\t\ttype hostResult struct {\n 198→\t\t\tcheckpoints []*CheckpointFile\n 199→\t\t\thostname string\n 200→\t\t\tfiles []string // checkpoint filenames to delete after successful write\n 201→\t\t\tdir string // checkpoint directory for this host\n 202→\t\t}\n 203→\n 204→\t\t// Small buffer provides back-pressure: at most NumWorkers+2 results in flight.\n 205→\t\tresults := make(chan hostResult, 2)\n 206→\t\twork := make(chan struct {\n 207→\t\t\tdir, host string\n 208→\t\t}, Keys.NumWorkers)\n 209→\n 210→\t\tvar wg sync.WaitGroup\n 211→\t\terrs := int32(0)\n 212→\n 213→\t\twg.Add(Keys.NumWorkers)\n 214→\t\tfor w := 0; w < Keys.NumWorkers; w++ {\n 215→\t\t\tgo func() {\n 216→\t\t\t\tdefer wg.Done()\n 217→\t\t\t\tfor item := range work {\n 218→\t\t\t\t\tcheckpoints, files, err := loadCheckpointFiles(item.dir, from)\n 219→\t\t\t\t\tif err != nil {\n 220→\t\t\t\t\t\tcclog.Errorf(\"[METRICSTORE]> error reading checkpoints for %s/%s: %s\", cluster, item.host, err.Error())\n 221→\t\t\t\t\t\tatomic.AddInt32(&errs, 1)\n 222→\t\t\t\t\t\tcontinue\n 223→\t\t\t\t\t}\n 224→\t\t\t\t\tif len(checkpoints) > 0 {\n 225→\t\t\t\t\t\tresults <- hostResult{\n 226→\t\t\t\t\t\t\tcheckpoints: checkpoints,\n 227→\t\t\t\t\t\t\thostname: item.host,\n 228→\t\t\t\t\t\t\tfiles: files,\n 229→\t\t\t\t\t\t\tdir: item.dir,\n 230→\t\t\t\t\t\t}\n 231→\t\t\t\t\t}\n 232→\t\t\t\t}\n 233→\t\t\t}()\n 234→\t\t}\n 235→\n 236→\t\tgo func() {\n 237→\t\t\tfor _, hostEntry := range hostEntries {\n 238→\t\t\t\tif !hostEntry.IsDir() {\n 239→\t\t\t\t\tcontinue\n 240→\t\t\t\t}\n 241→\t\t\t\tdir := filepath.Join(checkpointsDir, cluster, hostEntry.Name())\n 242→\t\t\t\twork <- struct {\n 243→\t\t\t\t\tdir, host string\n 244→\t\t\t\t}{dir: dir, host: hostEntry.Name()}\n 245→\t\t\t}\n 246→\t\t\tclose(work)\n 247→\t\t\twg.Wait()\n 248→\t\t\tclose(results)\n 249→\t\t}()\n 250→\n 251→\t\t// Open streaming writer and write each host's checkpoint files as a row group\n 252→\t\tparquetFile := filepath.Join(cleanupDir, cluster, fmt.Sprintf(\"%d.parquet\", from))\n 253→\t\twriter, err := newParquetArchiveWriter(parquetFile)\n 254→\t\tif err != nil {\n 255→\t\t\t// Drain results channel to unblock workers\n 256→\t\t\tfor range results {\n 257→\t\t\t}\n 258→\t\t\treturn totalFiles, fmt.Errorf(\"creating parquet writer for cluster %s: %w\", cluster, err)\n 259→\t\t}\n 260→\n 261→\t\ttype deleteItem struct {\n 262→\t\t\tdir string\n 263→\t\t\tfiles []string\n 264→\t\t}\n 265→\t\tvar toDelete []deleteItem\n 266→\t\twriteErr := error(nil)\n 267→\n 268→\t\tfor r := range results {\n 269→\t\t\tif writeErr == nil {\n 270→\t\t\t\t// Stream each checkpoint file directly to parquet rows.\n 271→\t\t\t\t// Each checkpoint is processed and discarded before the next.\n 272→\t\t\t\tfor _, cf := range r.checkpoints {\n 273→\t\t\t\t\tif err := writer.WriteCheckpointFile(cf, cluster, r.hostname, \"node\", \"\"); err != nil {\n 274→\t\t\t\t\t\twriteErr = err\n 275→\t\t\t\t\t\tbreak\n 276→\t\t\t\t\t}\n 277→\t\t\t\t}\n 278→tttt// Flush once per host to keep row group count within parquet limits.\n 279→ttttif writeErr == nil {\n 280→tttttif err := writer.FlushRowGroup(); err != nil {\n 281→ttttttwriteErr = err\n 282→ttttt}\n 283→tttt}\n 284→\t\t\t}\n 285→\t\t\t// Always track files for deletion (even if write failed, we still drain)\n 286→\t\t\ttoDelete = append(toDelete, deleteItem{dir: r.dir, files: r.files})\n 287→\t\t}\n 288→\n 289→\t\tif err := writer.Close(); err != nil && writeErr == nil {\n 290→\t\t\twriteErr = err\n 291→\t\t}\n 292→\n 293→\t\tif errs > 0 {\n 294→\t\t\treturn totalFiles, fmt.Errorf(\"%d errors reading checkpoints for cluster %s\", errs, cluster)\n 295→\t\t}\n 296→\n 297→\t\tif writer.count == 0 {\n 298→\t\t\t// No data written — remove empty file\n 299→\t\t\tos.Remove(parquetFile)\n 300→\t\t\tcontinue\n 301→\t\t}\n 302→\n 303→\t\tif writeErr != nil {\n 304→\t\t\tos.Remove(parquetFile)\n 305→\t\t\treturn totalFiles, fmt.Errorf(\"writing parquet archive for cluster %s: %w\", cluster, writeErr)\n 306→\t\t}\n 307→\n 308→\t\t// Delete archived checkpoint files\n 309→\t\tfor _, item := range toDelete {\n 310→\t\t\tfor _, file := range item.files {\n 311→\t\t\t\tfilename := filepath.Join(item.dir, file)\n 312→\t\t\t\tif err := os.Remove(filename); err != nil {\n 313→\t\t\t\t\tcclog.Warnf(\"[METRICSTORE]> could not remove archived checkpoint %s: %v\", filename, err)\n 314→\t\t\t\t} else {\n 315→\t\t\t\t\ttotalFiles++\n 316→\t\t\t\t}\n 317→\t\t\t}\n 318→\t\t}\n 319→\n 320→\t\tcclog.Infof(\"[METRICSTORE]> archived %d rows from %d files for cluster %s to %s\",\n 321→\t\t\twriter.count, totalFiles, cluster, parquetFile)\n 322→\t}\n 323→\n 324→\tcclog.Infof(\"[METRICSTORE]> archiving checkpoints completed in %s (%d files)\", time.Since(startTime).Round(time.Millisecond), totalFiles)\n 325→\treturn totalFiles, nil\n 326→}\n 327→"}]},"uuid":"97e5e2e1-8ba6-421f-b2f3-017b3a42177e","timestamp":"2026-03-23T05:23:54.781Z","toolUseResult":{"type":"text","file":{"filePath":"/Users/jan/prg/ClusterCockpit/cc-backend/pkg/metricstore/archive.go","content":"// Copyright (C) NHR@FAU, University Erlangen-Nuremberg.\n// All rights reserved. This file is part of cc-backend.\n// Use of this source code is governed by a MIT-style\n// license that can be found in the LICENSE file.\n\npackage metricstore\n\nimport (\n\t\"context\"\n\t\"errors\"\n\t\"fmt\"\n\t\"os\"\n\t\"path/filepath\"\n\t\"sync\"\n\t\"sync/atomic\"\n\t\"time\"\n\n\tcclog \"github.com/ClusterCockpit/cc-lib/v2/ccLogger\"\n)\n\n// Worker for either Archiving or Deleting files\n\nfunc CleanUp(wg *sync.WaitGroup, ctx context.Context) {\n\tif Keys.Cleanup.Mode == \"archive\" {\n\t\tcclog.Info(\"[METRICSTORE]> enable archive cleanup to parquet\")\n\t\t// Run as Archiver\n\t\tcleanUpWorker(wg, ctx,\n\t\t\tKeys.RetentionInMemory,\n\t\t\t\"archiving\",\n\t\t\tKeys.Cleanup.RootDir,\n\t\t\tfalse,\n\t\t)\n\t} else {\n\t\t// Run as Deleter\n\t\tcleanUpWorker(wg, ctx,\n\t\t\tKeys.RetentionInMemory,\n\t\t\t\"deleting\",\n\t\t\t\"\",\n\t\t\ttrue,\n\t\t)\n\t}\n}\n\n// cleanUpWorker takes simple values to configure what it does\nfunc cleanUpWorker(wg *sync.WaitGroup, ctx context.Context, interval string, mode string, cleanupDir string, delete bool) {\n\twg.Go(func() {\n\t\td, err := time.ParseDuration(interval)\n\t\tif err != nil {\n\t\t\tcclog.Fatalf(\"[METRICSTORE]> error parsing %s interval duration: %v\\n\", mode, err)\n\t\t}\n\t\tif d <= 0 {\n\t\t\treturn\n\t\t}\n\n\t\tticker := time.NewTicker(d)\n\t\tdefer ticker.Stop()\n\n\t\tfor {\n\t\t\tselect {\n\t\t\tcase <-ctx.Done():\n\t\t\t\treturn\n\t\t\tcase <-ticker.C:\n\t\t\t\tt := time.Now().Add(-d)\n\t\t\t\tcclog.Infof(\"[METRICSTORE]> start %s checkpoints (older than %s)...\", mode, t.Format(time.RFC3339))\n\n\t\t\t\tn, err := CleanupCheckpoints(Keys.Checkpoints.RootDir, cleanupDir, t.Unix(), delete)\n\n\t\t\t\tif err != nil {\n\t\t\t\t\tcclog.Errorf(\"[METRICSTORE]> %s failed: %s\", mode, err.Error())\n\t\t\t\t} else {\n\t\t\t\t\tif delete {\n\t\t\t\t\t\tcclog.Infof(\"[METRICSTORE]> done: %d checkpoints deleted\", n)\n\t\t\t\t\t} else {\n\t\t\t\t\t\tcclog.Infof(\"[METRICSTORE]> done: %d checkpoint files archived to parquet\", n)\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\t})\n}\n\nvar ErrNoNewArchiveData error = errors.New(\"all data already archived\")\n\n// CleanupCheckpoints deletes or archives all checkpoint files older than `from`.\n// When archiving, consolidates all hosts per cluster into a single Parquet file.\nfunc CleanupCheckpoints(checkpointsDir, cleanupDir string, from int64, deleteInstead bool) (int, error) {\n\tif deleteInstead {\n\t\treturn deleteCheckpoints(checkpointsDir, from)\n\t}\n\n\treturn archiveCheckpoints(checkpointsDir, cleanupDir, from)\n}\n\n// deleteCheckpoints removes checkpoint files older than `from` across all clusters/hosts.\nfunc deleteCheckpoints(checkpointsDir string, from int64) (int, error) {\n\tentries1, err := os.ReadDir(checkpointsDir)\n\tif err != nil {\n\t\treturn 0, err\n\t}\n\n\ttype workItem struct {\n\t\tdir string\n\t\tcluster, host string\n\t}\n\n\tvar wg sync.WaitGroup\n\tn, errs := int32(0), int32(0)\n\twork := make(chan workItem, Keys.NumWorkers)\n\n\twg.Add(Keys.NumWorkers)\n\tfor worker := 0; worker < Keys.NumWorkers; worker++ {\n\t\tgo func() {\n\t\t\tdefer wg.Done()\n\t\t\tfor item := range work {\n\t\t\t\tentries, err := os.ReadDir(item.dir)\n\t\t\t\tif err != nil {\n\t\t\t\t\tcclog.Errorf(\"error reading %s/%s: %s\", item.cluster, item.host, err.Error())\n\t\t\t\t\tatomic.AddInt32(&errs, 1)\n\t\t\t\t\tcontinue\n\t\t\t\t}\n\n\t\t\t\tfiles, err := findFiles(entries, from, false)\n\t\t\t\tif err != nil {\n\t\t\t\t\tcclog.Errorf(\"error finding files in %s/%s: %s\", item.cluster, item.host, err.Error())\n\t\t\t\t\tatomic.AddInt32(&errs, 1)\n\t\t\t\t\tcontinue\n\t\t\t\t}\n\n\t\t\t\tfor _, checkpoint := range files {\n\t\t\t\t\tif err := os.Remove(filepath.Join(item.dir, checkpoint)); err != nil {\n\t\t\t\t\t\tcclog.Errorf(\"error deleting %s/%s/%s: %s\", item.cluster, item.host, checkpoint, err.Error())\n\t\t\t\t\t\tatomic.AddInt32(&errs, 1)\n\t\t\t\t\t} else {\n\t\t\t\t\t\tatomic.AddInt32(&n, 1)\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t}\n\t\t}()\n\t}\n\n\tfor _, de1 := range entries1 {\n\t\tentries2, e := os.ReadDir(filepath.Join(checkpointsDir, de1.Name()))\n\t\tif e != nil {\n\t\t\terr = e\n\t\t\tcontinue\n\t\t}\n\n\t\tfor _, de2 := range entries2 {\n\t\t\twork <- workItem{\n\t\t\t\tdir: filepath.Join(checkpointsDir, de1.Name(), de2.Name()),\n\t\t\t\tcluster: de1.Name(),\n\t\t\t\thost: de2.Name(),\n\t\t\t}\n\t\t}\n\t}\n\n\tclose(work)\n\twg.Wait()\n\n\tif err != nil {\n\t\treturn int(n), err\n\t}\n\tif errs > 0 {\n\t\treturn int(n), fmt.Errorf(\"%d errors happened while deleting (%d successes)\", errs, n)\n\t}\n\treturn int(n), nil\n}\n\n// archiveCheckpoints archives checkpoint files to Parquet format.\n// Produces one Parquet file per cluster: <cleanupDir>/<cluster>/<timestamp>.parquet\n// Workers load checkpoint files from disk and send CheckpointFile trees on a\n// back-pressured channel. The main thread streams each tree directly to Parquet\n// rows without materializing all rows in memory.\nfunc archiveCheckpoints(checkpointsDir, cleanupDir string, from int64) (int, error) {\n\tcclog.Info(\"[METRICSTORE]> start archiving checkpoints to parquet\")\n\tstartTime := time.Now()\n\n\tclusterEntries, err := os.ReadDir(checkpointsDir)\n\tif err != nil {\n\t\treturn 0, err\n\t}\n\n\ttotalFiles := 0\n\n\tfor _, clusterEntry := range clusterEntries {\n\t\tif !clusterEntry.IsDir() {\n\t\t\tcontinue\n\t\t}\n\n\t\tcluster := clusterEntry.Name()\n\t\thostEntries, err := os.ReadDir(filepath.Join(checkpointsDir, cluster))\n\t\tif err != nil {\n\t\t\treturn totalFiles, err\n\t\t}\n\n\t\t// Workers load checkpoint files from disk; main thread writes to parquet.\n\t\ttype hostResult struct {\n\t\t\tcheckpoints []*CheckpointFile\n\t\t\thostname string\n\t\t\tfiles []string // checkpoint filenames to delete after successful write\n\t\t\tdir string // checkpoint directory for this host\n\t\t}\n\n\t\t// Small buffer provides back-pressure: at most NumWorkers+2 results in flight.\n\t\tresults := make(chan hostResult, 2)\n\t\twork := make(chan struct {\n\t\t\tdir, host string\n\t\t}, Keys.NumWorkers)\n\n\t\tvar wg sync.WaitGroup\n\t\terrs := int32(0)\n\n\t\twg.Add(Keys.NumWorkers)\n\t\tfor w := 0; w < Keys.NumWorkers; w++ {\n\t\t\tgo func() {\n\t\t\t\tdefer wg.Done()\n\t\t\t\tfor item := range work {\n\t\t\t\t\tcheckpoints, files, err := loadCheckpointFiles(item.dir, from)\n\t\t\t\t\tif err != nil {\n\t\t\t\t\t\tcclog.Errorf(\"[METRICSTORE]> error reading checkpoints for %s/%s: %s\", cluster, item.host, err.Error())\n\t\t\t\t\t\tatomic.AddInt32(&errs, 1)\n\t\t\t\t\t\tcontinue\n\t\t\t\t\t}\n\t\t\t\t\tif len(checkpoints) > 0 {\n\t\t\t\t\t\tresults <- hostResult{\n\t\t\t\t\t\t\tcheckpoints: checkpoints,\n\t\t\t\t\t\t\thostname: item.host,\n\t\t\t\t\t\t\tfiles: files,\n\t\t\t\t\t\t\tdir: item.dir,\n\t\t\t\t\t\t}\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t}()\n\t\t}\n\n\t\tgo func() {\n\t\t\tfor _, hostEntry := range hostEntries {\n\t\t\t\tif !hostEntry.IsDir() {\n\t\t\t\t\tcontinue\n\t\t\t\t}\n\t\t\t\tdir := filepath.Join(checkpointsDir, cluster, hostEntry.Name())\n\t\t\t\twork <- struct {\n\t\t\t\t\tdir, host string\n\t\t\t\t}{dir: dir, host: hostEntry.Name()}\n\t\t\t}\n\t\t\tclose(work)\n\t\t\twg.Wait()\n\t\t\tclose(results)\n\t\t}()\n\n\t\t// Open streaming writer and write each host's checkpoint files as a row group\n\t\tparquetFile := filepath.Join(cleanupDir, cluster, fmt.Sprintf(\"%d.parquet\", from))\n\t\twriter, err := newParquetArchiveWriter(parquetFile)\n\t\tif err != nil {\n\t\t\t// Drain results channel to unblock workers\n\t\t\tfor range results {\n\t\t\t}\n\t\t\treturn totalFiles, fmt.Errorf(\"creating parquet writer for cluster %s: %w\", cluster, err)\n\t\t}\n\n\t\ttype deleteItem struct {\n\t\t\tdir string\n\t\t\tfiles []string\n\t\t}\n\t\tvar toDelete []deleteItem\n\t\twriteErr := error(nil)\n\n\t\tfor r := range results {\n\t\t\tif writeErr == nil {\n\t\t\t\t// Stream each checkpoint file directly to parquet rows.\n\t\t\t\t// Each checkpoint is processed and discarded before the next.\n\t\t\t\tfor _, cf := range r.checkpoints {\n\t\t\t\t\tif err := writer.WriteCheckpointFile(cf, cluster, r.hostname, \"node\", \"\"); err != nil {\n\t\t\t\t\t\twriteErr = err\n\t\t\t\t\t\tbreak\n\t\t\t\t\t}\n\t\t\t\t}\ntttt// Flush once per host to keep row group count within parquet limits.\nttttif writeErr == nil {\ntttttif err := writer.FlushRowGroup(); err != nil {\nttttttwriteErr = err\nttttt}\ntttt}\n\t\t\t}\n\t\t\t// Always track files for deletion (even if write failed, we still drain)\n\t\t\ttoDelete = append(toDelete, deleteItem{dir: r.dir, files: r.files})\n\t\t}\n\n\t\tif err := writer.Close(); err != nil && writeErr == nil {\n\t\t\twriteErr = err\n\t\t}\n\n\t\tif errs > 0 {\n\t\t\treturn totalFiles, fmt.Errorf(\"%d errors reading checkpoints for cluster %s\", errs, cluster)\n\t\t}\n\n\t\tif writer.count == 0 {\n\t\t\t// No data written — remove empty file\n\t\t\tos.Remove(parquetFile)\n\t\t\tcontinue\n\t\t}\n\n\t\tif writeErr != nil {\n\t\t\tos.Remove(parquetFile)\n\t\t\treturn totalFiles, fmt.Errorf(\"writing parquet archive for cluster %s: %w\", cluster, writeErr)\n\t\t}\n\n\t\t// Delete archived checkpoint files\n\t\tfor _, item := range toDelete {\n\t\t\tfor _, file := range item.files {\n\t\t\t\tfilename := filepath.Join(item.dir, file)\n\t\t\t\tif err := os.Remove(filename); err != nil {\n\t\t\t\t\tcclog.Warnf(\"[METRICSTORE]> could not remove archived checkpoint %s: %v\", filename, err)\n\t\t\t\t} else {\n\t\t\t\t\ttotalFiles++\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\n\t\tcclog.Infof(\"[METRICSTORE]> archived %d rows from %d files for cluster %s to %s\",\n\t\t\twriter.count, totalFiles, cluster, parquetFile)\n\t}\n\n\tcclog.Infof(\"[METRICSTORE]> archiving checkpoints completed in %s (%d files)\", time.Since(startTime).Round(time.Millisecond), totalFiles)\n\treturn totalFiles, nil\n}\n","numLines":327,"startLine":1,"totalLines":327}},"sourceToolAssistantUUID":"b1ec97c7-a50b-40b3-95cc-0c03442b5333","userType":"external","entrypoint":"cli","cwd":"/Users/jan/prg/ClusterCockpit/cc-backend","sessionId":"0696ef34-7ff1-4c1e-9103-ffbca94f3ebd","version":"2.1.80","gitBranch":"hotfix","slug":"agile-napping-otter"}
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||
{"parentUuid":"97e5e2e1-8ba6-421f-b2f3-017b3a42177e","isSidechain":false,"message":{"model":"claude-opus-4-6","id":"msg_01WZZtWy2Erp3uRSYBE28RRD","type":"message","role":"assistant","content":[{"type":"text","text":"I see the broken lines 278-283 with literal \"t\" chars. Let me fix the whole block."}],"stop_reason":null,"stop_sequence":null,"usage":{"input_tokens":1,"cache_creation_input_tokens":4247,"cache_read_input_tokens":28802,"cache_creation":{"ephemeral_5m_input_tokens":0,"ephemeral_1h_input_tokens":4247},"output_tokens":1,"service_tier":"standard","inference_geo":"not_available"}},"requestId":"req_011CZKTGx1khe5R9todvXf64","type":"assistant","uuid":"36ffe6f6-3202-40c8-bdd1-4e3c3cf4ac31","timestamp":"2026-03-23T05:23:57.986Z","userType":"external","entrypoint":"cli","cwd":"/Users/jan/prg/ClusterCockpit/cc-backend","sessionId":"0696ef34-7ff1-4c1e-9103-ffbca94f3ebd","version":"2.1.80","gitBranch":"hotfix","slug":"agile-napping-otter"}
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||
{"parentUuid":"36ffe6f6-3202-40c8-bdd1-4e3c3cf4ac31","isSidechain":false,"message":{"model":"claude-opus-4-6","id":"msg_01WZZtWy2Erp3uRSYBE28RRD","type":"message","role":"assistant","content":[{"type":"tool_use","id":"toolu_01UeGX8KEwYwgrgTdswxTiae","name":"Edit","input":{"replace_all":false,"file_path":"/Users/jan/prg/ClusterCockpit/cc-backend/pkg/metricstore/archive.go","old_string":"\t\t\t}\ntttt// Flush once per host to keep row group count within parquet limits.\nttttif writeErr == nil {\ntttttif err := writer.FlushRowGroup(); err != nil {\nttttttwriteErr = err\nttttt}\ntttt}\n\t\t}","new_string":"\t\t\t}\n\t\t\t// Flush once per host to keep row group count within parquet limits.\n\t\t\tif writeErr == nil {\n\t\t\t\tif err := writer.FlushRowGroup(); err != nil {\n\t\t\t\t\twriteErr = err\n\t\t\t\t}\n\t\t\t}\n\t\t}"},"caller":{"type":"direct"}}],"stop_reason":"tool_use","stop_sequence":null,"usage":{"input_tokens":1,"cache_creation_input_tokens":4247,"cache_read_input_tokens":28802,"output_tokens":266,"server_tool_use":{"web_search_requests":0,"web_fetch_requests":0},"service_tier":"standard","cache_creation":{"ephemeral_1h_input_tokens":4247,"ephemeral_5m_input_tokens":0},"inference_geo":"","iterations":[],"speed":"standard"}},"requestId":"req_011CZKTGx1khe5R9todvXf64","type":"assistant","uuid":"2efaddba-7a68-4bdb-9a4a-c3f9ece9563b","timestamp":"2026-03-23T05:24:00.063Z","userType":"external","entrypoint":"cli","cwd":"/Users/jan/prg/ClusterCockpit/cc-backend","sessionId":"0696ef34-7ff1-4c1e-9103-ffbca94f3ebd","version":"2.1.80","gitBranch":"hotfix","slug":"agile-napping-otter"}
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{"parentUuid":"2efaddba-7a68-4bdb-9a4a-c3f9ece9563b","isSidechain":false,"promptId":"4c9038e2-c763-4f23-82bf-037c28776776","type":"user","message":{"role":"user","content":[{"type":"tool_result","content":"<tool_use_error>String to replace not found in file.\nString: \t\t\t}\ntttt// Flush once per host to keep row group count within parquet limits.\nttttif writeErr == nil {\ntttttif err := writer.FlushRowGroup(); err != nil {\nttttttwriteErr = err\nttttt}\ntttt}\n\t\t}</tool_use_error>","is_error":true,"tool_use_id":"toolu_01UeGX8KEwYwgrgTdswxTiae"}]},"uuid":"5bff9996-7ff5-472a-9a51-0b16d023cd7b","timestamp":"2026-03-23T05:24:00.066Z","toolUseResult":"Error: String to replace not found in file.\nString: \t\t\t}\ntttt// Flush once per host to keep row group count within parquet limits.\nttttif writeErr == nil {\ntttttif err := writer.FlushRowGroup(); err != nil {\nttttttwriteErr = err\nttttt}\ntttt}\n\t\t}","sourceToolAssistantUUID":"2efaddba-7a68-4bdb-9a4a-c3f9ece9563b","userType":"external","entrypoint":"cli","cwd":"/Users/jan/prg/ClusterCockpit/cc-backend","sessionId":"0696ef34-7ff1-4c1e-9103-ffbca94f3ebd","version":"2.1.80","gitBranch":"hotfix","slug":"agile-napping-otter"}
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||
{"parentUuid":"5bff9996-7ff5-472a-9a51-0b16d023cd7b","isSidechain":false,"message":{"model":"claude-opus-4-6","id":"msg_01YZU7LkU23aDXfjbDHXWtWs","type":"message","role":"assistant","content":[{"type":"tool_use","id":"toolu_01TnPvb22wqUbo5f9wMrhTLB","name":"Bash","input":{"command":"sed -n '277,284p' /Users/jan/prg/ClusterCockpit/cc-backend/pkg/metricstore/archive.go | od -c","description":"Show exact bytes of the broken lines"},"caller":{"type":"direct"}}],"stop_reason":"tool_use","stop_sequence":null,"usage":{"input_tokens":1,"cache_creation_input_tokens":397,"cache_read_input_tokens":33049,"output_tokens":114,"server_tool_use":{"web_search_requests":0,"web_fetch_requests":0},"service_tier":"standard","cache_creation":{"ephemeral_1h_input_tokens":397,"ephemeral_5m_input_tokens":0},"inference_geo":"","iterations":[],"speed":"standard"}},"requestId":"req_011CZKTHLNR53dzRgeS5DTFJ","type":"assistant","uuid":"893a5651-5d4f-466d-8e03-52eaf47e9cfb","timestamp":"2026-03-23T05:24:03.942Z","userType":"external","entrypoint":"cli","cwd":"/Users/jan/prg/ClusterCockpit/cc-backend","sessionId":"0696ef34-7ff1-4c1e-9103-ffbca94f3ebd","version":"2.1.80","gitBranch":"hotfix","slug":"agile-napping-otter"}
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||
{"parentUuid":"893a5651-5d4f-466d-8e03-52eaf47e9cfb","isSidechain":false,"promptId":"4c9038e2-c763-4f23-82bf-037c28776776","type":"user","message":{"role":"user","content":[{"tool_use_id":"toolu_01TnPvb22wqUbo5f9wMrhTLB","type":"tool_result","content":"0000000 \\t \\t \\t \\t } \\n t t t t / / F l u\n0000020 s h o n c e p e r h o s t\n0000040 t o k e e p r o w g r o\n0000060 u p c o u n t w i t h i n \n0000100 p a r q u e t l i m i t s . \\n\n0000120 t t t t i f w r i t e E r r \n0000140 = = n i l { \\n t t t t t i f\n0000160 e r r : = w r i t e r . F\n0000200 l u s h R o w G r o u p ( ) ; \n0000220 e r r ! = n i l { \\n t t t\n0000240 t t t w r i t e E r r = e r\n0000260 r \\n t t t t t } \\n t t t t } \\n \\t\n0000300 \\t \\t } \\n \n0000304","is_error":false}]},"uuid":"14bb1637-6b4b-4167-bdb4-ea7da233f9b3","timestamp":"2026-03-23T05:27:39.333Z","toolUseResult":{"stdout":"0000000 \\t \\t \\t \\t } \\n t t t t / / F l u\n0000020 s h o n c e p e r h o s t\n0000040 t o k e e p r o w g r o\n0000060 u p c o u n t w i t h i n \n0000100 p a r q u e t l i m i t s . \\n\n0000120 t t t t i f w r i t e E r r \n0000140 = = n i l { \\n t t t t t i f\n0000160 e r r : = w r i t e r . F\n0000200 l u s h R o w G r o u p ( ) ; \n0000220 e r r ! = n i l { \\n t t t\n0000240 t t t w r i t e E r r = e r\n0000260 r \\n t t t t t } \\n t t t t } \\n \\t\n0000300 \\t \\t } \\n \n0000304","stderr":"","interrupted":false,"isImage":false,"noOutputExpected":false},"sourceToolAssistantUUID":"893a5651-5d4f-466d-8e03-52eaf47e9cfb","userType":"external","entrypoint":"cli","cwd":"/Users/jan/prg/ClusterCockpit/cc-backend","sessionId":"0696ef34-7ff1-4c1e-9103-ffbca94f3ebd","version":"2.1.80","gitBranch":"hotfix","slug":"agile-napping-otter"}
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||
{"parentUuid":"14bb1637-6b4b-4167-bdb4-ea7da233f9b3","isSidechain":false,"message":{"model":"claude-opus-4-6","id":"msg_018LCpXW47mg92dDQJCWLCZv","type":"message","role":"assistant","content":[{"type":"text","text":"The broken lines have literal 't' characters (not tabs). Let me just rewrite the file with the correct content."}],"stop_reason":null,"stop_sequence":null,"usage":{"input_tokens":1,"cache_creation_input_tokens":544,"cache_read_input_tokens":33446,"cache_creation":{"ephemeral_5m_input_tokens":0,"ephemeral_1h_input_tokens":544},"output_tokens":1,"service_tier":"standard","inference_geo":"not_available"}},"requestId":"req_011CZKTZW4mdBTsjQWZDa3Bw","type":"assistant","uuid":"3562c514-3502-4f5d-80bb-ba0baebe2b5a","timestamp":"2026-03-23T05:27:42.705Z","userType":"external","entrypoint":"cli","cwd":"/Users/jan/prg/ClusterCockpit/cc-backend","sessionId":"0696ef34-7ff1-4c1e-9103-ffbca94f3ebd","version":"2.1.80","gitBranch":"hotfix","slug":"agile-napping-otter"}
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||
{"type":"file-history-snapshot","messageId":"68e0faea-0cc8-46c2-99b9-28cdc4dd7283","snapshot":{"messageId":"9e7a0d69-6f4e-432a-9c30-0c5be4e1243e","trackedFileBackups":{"pkg/metricstore/parquetArchive.go":{"backupFileName":"72c96c677604a2a3@v1","version":1,"backupTime":"2026-03-23T05:20:03.463Z"},"pkg/metricstore/archive.go":{"backupFileName":"e494d1fe775e2cee@v1","version":1,"backupTime":"2026-03-23T05:28:23.843Z"}},"timestamp":"2026-03-23T05:19:53.512Z"},"isSnapshotUpdate":true}
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{"parentUuid":"3562c514-3502-4f5d-80bb-ba0baebe2b5a","isSidechain":false,"message":{"model":"claude-opus-4-6","id":"msg_018LCpXW47mg92dDQJCWLCZv","type":"message","role":"assistant","content":[{"type":"tool_use","id":"toolu_01EdrpmQDXdDbT4UKqsn3PVq","name":"Write","input":{"file_path":"/Users/jan/prg/ClusterCockpit/cc-backend/pkg/metricstore/archive.go","content":"// Copyright (C) NHR@FAU, University Erlangen-Nuremberg.\n// All rights reserved. This file is part of cc-backend.\n// Use of this source code is governed by a MIT-style\n// license that can be found in the LICENSE file.\n\npackage metricstore\n\nimport (\n\t\"context\"\n\t\"errors\"\n\t\"fmt\"\n\t\"os\"\n\t\"path/filepath\"\n\t\"sync\"\n\t\"sync/atomic\"\n\t\"time\"\n\n\tcclog \"github.com/ClusterCockpit/cc-lib/v2/ccLogger\"\n)\n\n// Worker for either Archiving or Deleting files\n\nfunc CleanUp(wg *sync.WaitGroup, ctx context.Context) {\n\tif Keys.Cleanup.Mode == \"archive\" {\n\t\tcclog.Info(\"[METRICSTORE]> enable archive cleanup to parquet\")\n\t\t// Run as Archiver\n\t\tcleanUpWorker(wg, ctx,\n\t\t\tKeys.RetentionInMemory,\n\t\t\t\"archiving\",\n\t\t\tKeys.Cleanup.RootDir,\n\t\t\tfalse,\n\t\t)\n\t} else {\n\t\t// Run as Deleter\n\t\tcleanUpWorker(wg, ctx,\n\t\t\tKeys.RetentionInMemory,\n\t\t\t\"deleting\",\n\t\t\t\"\",\n\t\t\ttrue,\n\t\t)\n\t}\n}\n\n// cleanUpWorker takes simple values to configure what it does\nfunc cleanUpWorker(wg *sync.WaitGroup, ctx context.Context, interval string, mode string, cleanupDir string, delete bool) {\n\twg.Go(func() {\n\t\td, err := time.ParseDuration(interval)\n\t\tif err != nil {\n\t\t\tcclog.Fatalf(\"[METRICSTORE]> error parsing %s interval duration: %v\\n\", mode, err)\n\t\t}\n\t\tif d <= 0 {\n\t\t\treturn\n\t\t}\n\n\t\tticker := time.NewTicker(d)\n\t\tdefer ticker.Stop()\n\n\t\tfor {\n\t\t\tselect {\n\t\t\tcase <-ctx.Done():\n\t\t\t\treturn\n\t\t\tcase <-ticker.C:\n\t\t\t\tt := time.Now().Add(-d)\n\t\t\t\tcclog.Infof(\"[METRICSTORE]> start %s checkpoints (older than %s)...\", mode, t.Format(time.RFC3339))\n\n\t\t\t\tn, err := CleanupCheckpoints(Keys.Checkpoints.RootDir, cleanupDir, t.Unix(), delete)\n\n\t\t\t\tif err != nil {\n\t\t\t\t\tcclog.Errorf(\"[METRICSTORE]> %s failed: %s\", mode, err.Error())\n\t\t\t\t} else {\n\t\t\t\t\tif delete {\n\t\t\t\t\t\tcclog.Infof(\"[METRICSTORE]> done: %d checkpoints deleted\", n)\n\t\t\t\t\t} else {\n\t\t\t\t\t\tcclog.Infof(\"[METRICSTORE]> done: %d checkpoint files archived to parquet\", n)\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\t})\n}\n\nvar ErrNoNewArchiveData error = errors.New(\"all data already archived\")\n\n// CleanupCheckpoints deletes or archives all checkpoint files older than `from`.\n// When archiving, consolidates all hosts per cluster into a single Parquet file.\nfunc CleanupCheckpoints(checkpointsDir, cleanupDir string, from int64, deleteInstead bool) (int, error) {\n\tif deleteInstead {\n\t\treturn deleteCheckpoints(checkpointsDir, from)\n\t}\n\n\treturn archiveCheckpoints(checkpointsDir, cleanupDir, from)\n}\n\n// deleteCheckpoints removes checkpoint files older than `from` across all clusters/hosts.\nfunc deleteCheckpoints(checkpointsDir string, from int64) (int, error) {\n\tentries1, err := os.ReadDir(checkpointsDir)\n\tif err != nil {\n\t\treturn 0, err\n\t}\n\n\ttype workItem struct {\n\t\tdir string\n\t\tcluster, host string\n\t}\n\n\tvar wg sync.WaitGroup\n\tn, errs := int32(0), int32(0)\n\twork := make(chan workItem, Keys.NumWorkers)\n\n\twg.Add(Keys.NumWorkers)\n\tfor worker := 0; worker < Keys.NumWorkers; worker++ {\n\t\tgo func() {\n\t\t\tdefer wg.Done()\n\t\t\tfor item := range work {\n\t\t\t\tentries, err := os.ReadDir(item.dir)\n\t\t\t\tif err != nil {\n\t\t\t\t\tcclog.Errorf(\"error reading %s/%s: %s\", item.cluster, item.host, err.Error())\n\t\t\t\t\tatomic.AddInt32(&errs, 1)\n\t\t\t\t\tcontinue\n\t\t\t\t}\n\n\t\t\t\tfiles, err := findFiles(entries, from, false)\n\t\t\t\tif err != nil {\n\t\t\t\t\tcclog.Errorf(\"error finding files in %s/%s: %s\", item.cluster, item.host, err.Error())\n\t\t\t\t\tatomic.AddInt32(&errs, 1)\n\t\t\t\t\tcontinue\n\t\t\t\t}\n\n\t\t\t\tfor _, checkpoint := range files {\n\t\t\t\t\tif err := os.Remove(filepath.Join(item.dir, checkpoint)); err != nil {\n\t\t\t\t\t\tcclog.Errorf(\"error deleting %s/%s/%s: %s\", item.cluster, item.host, checkpoint, err.Error())\n\t\t\t\t\t\tatomic.AddInt32(&errs, 1)\n\t\t\t\t\t} else {\n\t\t\t\t\t\tatomic.AddInt32(&n, 1)\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t}\n\t\t}()\n\t}\n\n\tfor _, de1 := range entries1 {\n\t\tentries2, e := os.ReadDir(filepath.Join(checkpointsDir, de1.Name()))\n\t\tif e != nil {\n\t\t\terr = e\n\t\t\tcontinue\n\t\t}\n\n\t\tfor _, de2 := range entries2 {\n\t\t\twork <- workItem{\n\t\t\t\tdir: filepath.Join(checkpointsDir, de1.Name(), de2.Name()),\n\t\t\t\tcluster: de1.Name(),\n\t\t\t\thost: de2.Name(),\n\t\t\t}\n\t\t}\n\t}\n\n\tclose(work)\n\twg.Wait()\n\n\tif err != nil {\n\t\treturn int(n), err\n\t}\n\tif errs > 0 {\n\t\treturn int(n), fmt.Errorf(\"%d errors happened while deleting (%d successes)\", errs, n)\n\t}\n\treturn int(n), nil\n}\n\n// archiveCheckpoints archives checkpoint files to Parquet format.\n// Produces one Parquet file per cluster: <cleanupDir>/<cluster>/<timestamp>.parquet\n// Workers load checkpoint files from disk and send CheckpointFile trees on a\n// back-pressured channel. The main thread streams each tree directly to Parquet\n// rows without materializing all rows in memory.\nfunc archiveCheckpoints(checkpointsDir, cleanupDir string, from int64) (int, error) {\n\tcclog.Info(\"[METRICSTORE]> start archiving checkpoints to parquet\")\n\tstartTime := time.Now()\n\n\tclusterEntries, err := os.ReadDir(checkpointsDir)\n\tif err != nil {\n\t\treturn 0, err\n\t}\n\n\ttotalFiles := 0\n\n\tfor _, clusterEntry := range clusterEntries {\n\t\tif !clusterEntry.IsDir() {\n\t\t\tcontinue\n\t\t}\n\n\t\tcluster := clusterEntry.Name()\n\t\thostEntries, err := os.ReadDir(filepath.Join(checkpointsDir, cluster))\n\t\tif err != nil {\n\t\t\treturn totalFiles, err\n\t\t}\n\n\t\t// Workers load checkpoint files from disk; main thread writes to parquet.\n\t\ttype hostResult struct {\n\t\t\tcheckpoints []*CheckpointFile\n\t\t\thostname string\n\t\t\tfiles []string // checkpoint filenames to delete after successful write\n\t\t\tdir string // checkpoint directory for this host\n\t\t}\n\n\t\t// Small buffer provides back-pressure: at most NumWorkers+2 results in flight.\n\t\tresults := make(chan hostResult, 2)\n\t\twork := make(chan struct {\n\t\t\tdir, host string\n\t\t}, Keys.NumWorkers)\n\n\t\tvar wg sync.WaitGroup\n\t\terrs := int32(0)\n\n\t\twg.Add(Keys.NumWorkers)\n\t\tfor w := 0; w < Keys.NumWorkers; w++ {\n\t\t\tgo func() {\n\t\t\t\tdefer wg.Done()\n\t\t\t\tfor item := range work {\n\t\t\t\t\tcheckpoints, files, err := loadCheckpointFiles(item.dir, from)\n\t\t\t\t\tif err != nil {\n\t\t\t\t\t\tcclog.Errorf(\"[METRICSTORE]> error reading checkpoints for %s/%s: %s\", cluster, item.host, err.Error())\n\t\t\t\t\t\tatomic.AddInt32(&errs, 1)\n\t\t\t\t\t\tcontinue\n\t\t\t\t\t}\n\t\t\t\t\tif len(checkpoints) > 0 {\n\t\t\t\t\t\tresults <- hostResult{\n\t\t\t\t\t\t\tcheckpoints: checkpoints,\n\t\t\t\t\t\t\thostname: item.host,\n\t\t\t\t\t\t\tfiles: files,\n\t\t\t\t\t\t\tdir: item.dir,\n\t\t\t\t\t\t}\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t}()\n\t\t}\n\n\t\tgo func() {\n\t\t\tfor _, hostEntry := range hostEntries {\n\t\t\t\tif !hostEntry.IsDir() {\n\t\t\t\t\tcontinue\n\t\t\t\t}\n\t\t\t\tdir := filepath.Join(checkpointsDir, cluster, hostEntry.Name())\n\t\t\t\twork <- struct {\n\t\t\t\t\tdir, host string\n\t\t\t\t}{dir: dir, host: hostEntry.Name()}\n\t\t\t}\n\t\t\tclose(work)\n\t\t\twg.Wait()\n\t\t\tclose(results)\n\t\t}()\n\n\t\t// Open streaming writer and write each host's checkpoint files as a row group\n\t\tparquetFile := filepath.Join(cleanupDir, cluster, fmt.Sprintf(\"%d.parquet\", from))\n\t\twriter, err := newParquetArchiveWriter(parquetFile)\n\t\tif err != nil {\n\t\t\t// Drain results channel to unblock workers\n\t\t\tfor range results {\n\t\t\t}\n\t\t\treturn totalFiles, fmt.Errorf(\"creating parquet writer for cluster %s: %w\", cluster, err)\n\t\t}\n\n\t\ttype deleteItem struct {\n\t\t\tdir string\n\t\t\tfiles []string\n\t\t}\n\t\tvar toDelete []deleteItem\n\t\twriteErr := error(nil)\n\n\t\tfor r := range results {\n\t\t\tif writeErr == nil {\n\t\t\t\t// Stream each checkpoint file directly to parquet rows.\n\t\t\t\t// Each checkpoint is processed and discarded before the next.\n\t\t\t\tfor _, cf := range r.checkpoints {\n\t\t\t\t\tif err := writer.WriteCheckpointFile(cf, cluster, r.hostname, \"node\", \"\"); err != nil {\n\t\t\t\t\t\twriteErr = err\n\t\t\t\t\t\tbreak\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t\t// Flush once per host to keep row group count within parquet limits.\n\t\t\t\tif writeErr == nil {\n\t\t\t\t\tif err := writer.FlushRowGroup(); err != nil {\n\t\t\t\t\t\twriteErr = err\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t}\n\t\t\t// Always track files for deletion (even if write failed, we still drain)\n\t\t\ttoDelete = append(toDelete, deleteItem{dir: r.dir, files: r.files})\n\t\t}\n\n\t\tif err := writer.Close(); err != nil && writeErr == nil {\n\t\t\twriteErr = err\n\t\t}\n\n\t\tif errs > 0 {\n\t\t\treturn totalFiles, fmt.Errorf(\"%d errors reading checkpoints for cluster %s\", errs, cluster)\n\t\t}\n\n\t\tif writer.count == 0 {\n\t\t\t// No data written — remove empty file\n\t\t\tos.Remove(parquetFile)\n\t\t\tcontinue\n\t\t}\n\n\t\tif writeErr != nil {\n\t\t\tos.Remove(parquetFile)\n\t\t\treturn totalFiles, fmt.Errorf(\"writing parquet archive for cluster %s: %w\", cluster, writeErr)\n\t\t}\n\n\t\t// Delete archived checkpoint files\n\t\tfor _, item := range toDelete {\n\t\t\tfor _, file := range item.files {\n\t\t\t\tfilename := filepath.Join(item.dir, file)\n\t\t\t\tif err := os.Remove(filename); err != nil {\n\t\t\t\t\tcclog.Warnf(\"[METRICSTORE]> could not remove archived checkpoint %s: %v\", filename, err)\n\t\t\t\t} else {\n\t\t\t\t\ttotalFiles++\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\n\t\tcclog.Infof(\"[METRICSTORE]> archived %d rows from %d files for cluster %s to %s\",\n\t\t\twriter.count, totalFiles, cluster, parquetFile)\n\t}\n\n\tcclog.Infof(\"[METRICSTORE]> archiving checkpoints completed in %s (%d files)\", time.Since(startTime).Round(time.Millisecond), totalFiles)\n\treturn totalFiles, nil\n}\n"},"caller":{"type":"direct"}}],"stop_reason":"tool_use","stop_sequence":null,"usage":{"input_tokens":1,"cache_creation_input_tokens":544,"cache_read_input_tokens":33446,"output_tokens":3111,"server_tool_use":{"web_search_requests":0,"web_fetch_requests":0},"service_tier":"standard","cache_creation":{"ephemeral_1h_input_tokens":544,"ephemeral_5m_input_tokens":0},"inference_geo":"","iterations":[],"speed":"standard"}},"requestId":"req_011CZKTZW4mdBTsjQWZDa3Bw","type":"assistant","uuid":"68e0faea-0cc8-46c2-99b9-28cdc4dd7283","timestamp":"2026-03-23T05:28:23.831Z","userType":"external","entrypoint":"cli","cwd":"/Users/jan/prg/ClusterCockpit/cc-backend","sessionId":"0696ef34-7ff1-4c1e-9103-ffbca94f3ebd","version":"2.1.80","gitBranch":"hotfix","slug":"agile-napping-otter"}
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{"parentUuid":"68e0faea-0cc8-46c2-99b9-28cdc4dd7283","isSidechain":false,"type":"progress","data":{"type":"hook_progress","hookEvent":"PostToolUse","hookName":"PostToolUse:Write","command":"callback"},"parentToolUseID":"toolu_01EdrpmQDXdDbT4UKqsn3PVq","toolUseID":"toolu_01EdrpmQDXdDbT4UKqsn3PVq","timestamp":"2026-03-23T05:28:23.845Z","uuid":"723a7a0b-f46d-4061-8700-b1d430aafd15","userType":"external","entrypoint":"cli","cwd":"/Users/jan/prg/ClusterCockpit/cc-backend","sessionId":"0696ef34-7ff1-4c1e-9103-ffbca94f3ebd","version":"2.1.80","gitBranch":"hotfix","slug":"agile-napping-otter"}
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{"parentUuid":"68e0faea-0cc8-46c2-99b9-28cdc4dd7283","isSidechain":false,"promptId":"4c9038e2-c763-4f23-82bf-037c28776776","type":"user","message":{"role":"user","content":[{"tool_use_id":"toolu_01EdrpmQDXdDbT4UKqsn3PVq","type":"tool_result","content":"The file /Users/jan/prg/ClusterCockpit/cc-backend/pkg/metricstore/archive.go has been updated successfully."}]},"uuid":"8893342f-9b62-4597-aa13-624938455c02","timestamp":"2026-03-23T05:28:23.845Z","toolUseResult":{"type":"update","filePath":"/Users/jan/prg/ClusterCockpit/cc-backend/pkg/metricstore/archive.go","content":"// Copyright (C) NHR@FAU, University Erlangen-Nuremberg.\n// All rights reserved. This file is part of cc-backend.\n// Use of this source code is governed by a MIT-style\n// license that can be found in the LICENSE file.\n\npackage metricstore\n\nimport (\n\t\"context\"\n\t\"errors\"\n\t\"fmt\"\n\t\"os\"\n\t\"path/filepath\"\n\t\"sync\"\n\t\"sync/atomic\"\n\t\"time\"\n\n\tcclog \"github.com/ClusterCockpit/cc-lib/v2/ccLogger\"\n)\n\n// Worker for either Archiving or Deleting files\n\nfunc CleanUp(wg *sync.WaitGroup, ctx context.Context) {\n\tif Keys.Cleanup.Mode == \"archive\" {\n\t\tcclog.Info(\"[METRICSTORE]> enable archive cleanup to parquet\")\n\t\t// Run as Archiver\n\t\tcleanUpWorker(wg, ctx,\n\t\t\tKeys.RetentionInMemory,\n\t\t\t\"archiving\",\n\t\t\tKeys.Cleanup.RootDir,\n\t\t\tfalse,\n\t\t)\n\t} else {\n\t\t// Run as Deleter\n\t\tcleanUpWorker(wg, ctx,\n\t\t\tKeys.RetentionInMemory,\n\t\t\t\"deleting\",\n\t\t\t\"\",\n\t\t\ttrue,\n\t\t)\n\t}\n}\n\n// cleanUpWorker takes simple values to configure what it does\nfunc cleanUpWorker(wg *sync.WaitGroup, ctx context.Context, interval string, mode string, cleanupDir string, delete bool) {\n\twg.Go(func() {\n\t\td, err := time.ParseDuration(interval)\n\t\tif err != nil {\n\t\t\tcclog.Fatalf(\"[METRICSTORE]> error parsing %s interval duration: %v\\n\", mode, err)\n\t\t}\n\t\tif d <= 0 {\n\t\t\treturn\n\t\t}\n\n\t\tticker := time.NewTicker(d)\n\t\tdefer ticker.Stop()\n\n\t\tfor {\n\t\t\tselect {\n\t\t\tcase <-ctx.Done():\n\t\t\t\treturn\n\t\t\tcase <-ticker.C:\n\t\t\t\tt := time.Now().Add(-d)\n\t\t\t\tcclog.Infof(\"[METRICSTORE]> start %s checkpoints (older than %s)...\", mode, t.Format(time.RFC3339))\n\n\t\t\t\tn, err := CleanupCheckpoints(Keys.Checkpoints.RootDir, cleanupDir, t.Unix(), delete)\n\n\t\t\t\tif err != nil {\n\t\t\t\t\tcclog.Errorf(\"[METRICSTORE]> %s failed: %s\", mode, err.Error())\n\t\t\t\t} else {\n\t\t\t\t\tif delete {\n\t\t\t\t\t\tcclog.Infof(\"[METRICSTORE]> done: %d checkpoints deleted\", n)\n\t\t\t\t\t} else {\n\t\t\t\t\t\tcclog.Infof(\"[METRICSTORE]> done: %d checkpoint files archived to parquet\", n)\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\t})\n}\n\nvar ErrNoNewArchiveData error = errors.New(\"all data already archived\")\n\n// CleanupCheckpoints deletes or archives all checkpoint files older than `from`.\n// When archiving, consolidates all hosts per cluster into a single Parquet file.\nfunc CleanupCheckpoints(checkpointsDir, cleanupDir string, from int64, deleteInstead bool) (int, error) {\n\tif deleteInstead {\n\t\treturn deleteCheckpoints(checkpointsDir, from)\n\t}\n\n\treturn archiveCheckpoints(checkpointsDir, cleanupDir, from)\n}\n\n// deleteCheckpoints removes checkpoint files older than `from` across all clusters/hosts.\nfunc deleteCheckpoints(checkpointsDir string, from int64) (int, error) {\n\tentries1, err := os.ReadDir(checkpointsDir)\n\tif err != nil {\n\t\treturn 0, err\n\t}\n\n\ttype workItem struct {\n\t\tdir string\n\t\tcluster, host string\n\t}\n\n\tvar wg sync.WaitGroup\n\tn, errs := int32(0), int32(0)\n\twork := make(chan workItem, Keys.NumWorkers)\n\n\twg.Add(Keys.NumWorkers)\n\tfor worker := 0; worker < Keys.NumWorkers; worker++ {\n\t\tgo func() {\n\t\t\tdefer wg.Done()\n\t\t\tfor item := range work {\n\t\t\t\tentries, err := os.ReadDir(item.dir)\n\t\t\t\tif err != nil {\n\t\t\t\t\tcclog.Errorf(\"error reading %s/%s: %s\", item.cluster, item.host, err.Error())\n\t\t\t\t\tatomic.AddInt32(&errs, 1)\n\t\t\t\t\tcontinue\n\t\t\t\t}\n\n\t\t\t\tfiles, err := findFiles(entries, from, false)\n\t\t\t\tif err != nil {\n\t\t\t\t\tcclog.Errorf(\"error finding files in %s/%s: %s\", item.cluster, item.host, err.Error())\n\t\t\t\t\tatomic.AddInt32(&errs, 1)\n\t\t\t\t\tcontinue\n\t\t\t\t}\n\n\t\t\t\tfor _, checkpoint := range files {\n\t\t\t\t\tif err := os.Remove(filepath.Join(item.dir, checkpoint)); err != nil {\n\t\t\t\t\t\tcclog.Errorf(\"error deleting %s/%s/%s: %s\", item.cluster, item.host, checkpoint, err.Error())\n\t\t\t\t\t\tatomic.AddInt32(&errs, 1)\n\t\t\t\t\t} else {\n\t\t\t\t\t\tatomic.AddInt32(&n, 1)\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t}\n\t\t}()\n\t}\n\n\tfor _, de1 := range entries1 {\n\t\tentries2, e := os.ReadDir(filepath.Join(checkpointsDir, de1.Name()))\n\t\tif e != nil {\n\t\t\terr = e\n\t\t\tcontinue\n\t\t}\n\n\t\tfor _, de2 := range entries2 {\n\t\t\twork <- workItem{\n\t\t\t\tdir: filepath.Join(checkpointsDir, de1.Name(), de2.Name()),\n\t\t\t\tcluster: de1.Name(),\n\t\t\t\thost: de2.Name(),\n\t\t\t}\n\t\t}\n\t}\n\n\tclose(work)\n\twg.Wait()\n\n\tif err != nil {\n\t\treturn int(n), err\n\t}\n\tif errs > 0 {\n\t\treturn int(n), fmt.Errorf(\"%d errors happened while deleting (%d successes)\", errs, n)\n\t}\n\treturn int(n), nil\n}\n\n// archiveCheckpoints archives checkpoint files to Parquet format.\n// Produces one Parquet file per cluster: <cleanupDir>/<cluster>/<timestamp>.parquet\n// Workers load checkpoint files from disk and send CheckpointFile trees on a\n// back-pressured channel. The main thread streams each tree directly to Parquet\n// rows without materializing all rows in memory.\nfunc archiveCheckpoints(checkpointsDir, cleanupDir string, from int64) (int, error) {\n\tcclog.Info(\"[METRICSTORE]> start archiving checkpoints to parquet\")\n\tstartTime := time.Now()\n\n\tclusterEntries, err := os.ReadDir(checkpointsDir)\n\tif err != nil {\n\t\treturn 0, err\n\t}\n\n\ttotalFiles := 0\n\n\tfor _, clusterEntry := range clusterEntries {\n\t\tif !clusterEntry.IsDir() {\n\t\t\tcontinue\n\t\t}\n\n\t\tcluster := clusterEntry.Name()\n\t\thostEntries, err := os.ReadDir(filepath.Join(checkpointsDir, cluster))\n\t\tif err != nil {\n\t\t\treturn totalFiles, err\n\t\t}\n\n\t\t// Workers load checkpoint files from disk; main thread writes to parquet.\n\t\ttype hostResult struct {\n\t\t\tcheckpoints []*CheckpointFile\n\t\t\thostname string\n\t\t\tfiles []string // checkpoint filenames to delete after successful write\n\t\t\tdir string // checkpoint directory for this host\n\t\t}\n\n\t\t// Small buffer provides back-pressure: at most NumWorkers+2 results in flight.\n\t\tresults := make(chan hostResult, 2)\n\t\twork := make(chan struct {\n\t\t\tdir, host string\n\t\t}, Keys.NumWorkers)\n\n\t\tvar wg sync.WaitGroup\n\t\terrs := int32(0)\n\n\t\twg.Add(Keys.NumWorkers)\n\t\tfor w := 0; w < Keys.NumWorkers; w++ {\n\t\t\tgo func() {\n\t\t\t\tdefer wg.Done()\n\t\t\t\tfor item := range work {\n\t\t\t\t\tcheckpoints, files, err := loadCheckpointFiles(item.dir, from)\n\t\t\t\t\tif err != nil {\n\t\t\t\t\t\tcclog.Errorf(\"[METRICSTORE]> error reading checkpoints for %s/%s: %s\", cluster, item.host, err.Error())\n\t\t\t\t\t\tatomic.AddInt32(&errs, 1)\n\t\t\t\t\t\tcontinue\n\t\t\t\t\t}\n\t\t\t\t\tif len(checkpoints) > 0 {\n\t\t\t\t\t\tresults <- hostResult{\n\t\t\t\t\t\t\tcheckpoints: checkpoints,\n\t\t\t\t\t\t\thostname: item.host,\n\t\t\t\t\t\t\tfiles: files,\n\t\t\t\t\t\t\tdir: item.dir,\n\t\t\t\t\t\t}\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t}()\n\t\t}\n\n\t\tgo func() {\n\t\t\tfor _, hostEntry := range hostEntries {\n\t\t\t\tif !hostEntry.IsDir() {\n\t\t\t\t\tcontinue\n\t\t\t\t}\n\t\t\t\tdir := filepath.Join(checkpointsDir, cluster, hostEntry.Name())\n\t\t\t\twork <- struct {\n\t\t\t\t\tdir, host string\n\t\t\t\t}{dir: dir, host: hostEntry.Name()}\n\t\t\t}\n\t\t\tclose(work)\n\t\t\twg.Wait()\n\t\t\tclose(results)\n\t\t}()\n\n\t\t// Open streaming writer and write each host's checkpoint files as a row group\n\t\tparquetFile := filepath.Join(cleanupDir, cluster, fmt.Sprintf(\"%d.parquet\", from))\n\t\twriter, err := newParquetArchiveWriter(parquetFile)\n\t\tif err != nil {\n\t\t\t// Drain results channel to unblock workers\n\t\t\tfor range results {\n\t\t\t}\n\t\t\treturn totalFiles, fmt.Errorf(\"creating parquet writer for cluster %s: %w\", cluster, err)\n\t\t}\n\n\t\ttype deleteItem struct {\n\t\t\tdir string\n\t\t\tfiles []string\n\t\t}\n\t\tvar toDelete []deleteItem\n\t\twriteErr := error(nil)\n\n\t\tfor r := range results {\n\t\t\tif writeErr == nil {\n\t\t\t\t// Stream each checkpoint file directly to parquet rows.\n\t\t\t\t// Each checkpoint is processed and discarded before the next.\n\t\t\t\tfor _, cf := range r.checkpoints {\n\t\t\t\t\tif err := writer.WriteCheckpointFile(cf, cluster, r.hostname, \"node\", \"\"); err != nil {\n\t\t\t\t\t\twriteErr = err\n\t\t\t\t\t\tbreak\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t\t// Flush once per host to keep row group count within parquet limits.\n\t\t\t\tif writeErr == nil {\n\t\t\t\t\tif err := writer.FlushRowGroup(); err != nil {\n\t\t\t\t\t\twriteErr = err\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t}\n\t\t\t// Always track files for deletion (even if write failed, we still drain)\n\t\t\ttoDelete = append(toDelete, deleteItem{dir: r.dir, files: r.files})\n\t\t}\n\n\t\tif err := writer.Close(); err != nil && writeErr == nil {\n\t\t\twriteErr = err\n\t\t}\n\n\t\tif errs > 0 {\n\t\t\treturn totalFiles, fmt.Errorf(\"%d errors reading checkpoints for cluster %s\", errs, cluster)\n\t\t}\n\n\t\tif writer.count == 0 {\n\t\t\t// No data written — remove empty file\n\t\t\tos.Remove(parquetFile)\n\t\t\tcontinue\n\t\t}\n\n\t\tif writeErr != nil {\n\t\t\tos.Remove(parquetFile)\n\t\t\treturn totalFiles, fmt.Errorf(\"writing parquet archive for cluster %s: %w\", cluster, writeErr)\n\t\t}\n\n\t\t// Delete archived checkpoint files\n\t\tfor _, item := range toDelete {\n\t\t\tfor _, file := range item.files {\n\t\t\t\tfilename := filepath.Join(item.dir, file)\n\t\t\t\tif err := os.Remove(filename); err != nil {\n\t\t\t\t\tcclog.Warnf(\"[METRICSTORE]> could not remove archived checkpoint %s: %v\", filename, err)\n\t\t\t\t} else {\n\t\t\t\t\ttotalFiles++\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\n\t\tcclog.Infof(\"[METRICSTORE]> archived %d rows from %d files for cluster %s to %s\",\n\t\t\twriter.count, totalFiles, cluster, parquetFile)\n\t}\n\n\tcclog.Infof(\"[METRICSTORE]> archiving checkpoints completed in %s (%d files)\", time.Since(startTime).Round(time.Millisecond), totalFiles)\n\treturn totalFiles, nil\n}\n","structuredPatch":[{"oldStart":275,"oldLines":12,"newStart":275,"newLines":12,"lines":[" break"," }"," }","-tttt// Flush once per host to keep row group count within parquet limits.","-ttttif writeErr == nil {","-tttttif err := writer.FlushRowGroup(); err != nil {","-ttttttwriteErr = err","-ttttt}","-tttt}","+ // Flush once per host to keep row group count within parquet limits.","+ if writeErr == nil {","+ if err := writer.FlushRowGroup(); err != nil {","+ writeErr = err","+ }","+ }"," }"," // Always track files for deletion (even if write failed, we still drain)"," toDelete = append(toDelete, deleteItem{dir: r.dir, files: r.files})"]}],"originalFile":"// Copyright (C) NHR@FAU, University Erlangen-Nuremberg.\n// All rights reserved. This file is part of cc-backend.\n// Use of this source code is governed by a MIT-style\n// license that can be found in the LICENSE file.\n\npackage metricstore\n\nimport (\n\t\"context\"\n\t\"errors\"\n\t\"fmt\"\n\t\"os\"\n\t\"path/filepath\"\n\t\"sync\"\n\t\"sync/atomic\"\n\t\"time\"\n\n\tcclog \"github.com/ClusterCockpit/cc-lib/v2/ccLogger\"\n)\n\n// Worker for either Archiving or Deleting files\n\nfunc CleanUp(wg *sync.WaitGroup, ctx context.Context) {\n\tif Keys.Cleanup.Mode == \"archive\" {\n\t\tcclog.Info(\"[METRICSTORE]> enable archive cleanup to parquet\")\n\t\t// Run as Archiver\n\t\tcleanUpWorker(wg, ctx,\n\t\t\tKeys.RetentionInMemory,\n\t\t\t\"archiving\",\n\t\t\tKeys.Cleanup.RootDir,\n\t\t\tfalse,\n\t\t)\n\t} else {\n\t\t// Run as Deleter\n\t\tcleanUpWorker(wg, ctx,\n\t\t\tKeys.RetentionInMemory,\n\t\t\t\"deleting\",\n\t\t\t\"\",\n\t\t\ttrue,\n\t\t)\n\t}\n}\n\n// cleanUpWorker takes simple values to configure what it does\nfunc cleanUpWorker(wg *sync.WaitGroup, ctx context.Context, interval string, mode string, cleanupDir string, delete bool) {\n\twg.Go(func() {\n\t\td, err := time.ParseDuration(interval)\n\t\tif err != nil {\n\t\t\tcclog.Fatalf(\"[METRICSTORE]> error parsing %s interval duration: %v\\n\", mode, err)\n\t\t}\n\t\tif d <= 0 {\n\t\t\treturn\n\t\t}\n\n\t\tticker := time.NewTicker(d)\n\t\tdefer ticker.Stop()\n\n\t\tfor {\n\t\t\tselect {\n\t\t\tcase <-ctx.Done():\n\t\t\t\treturn\n\t\t\tcase <-ticker.C:\n\t\t\t\tt := time.Now().Add(-d)\n\t\t\t\tcclog.Infof(\"[METRICSTORE]> start %s checkpoints (older than %s)...\", mode, t.Format(time.RFC3339))\n\n\t\t\t\tn, err := CleanupCheckpoints(Keys.Checkpoints.RootDir, cleanupDir, t.Unix(), delete)\n\n\t\t\t\tif err != nil {\n\t\t\t\t\tcclog.Errorf(\"[METRICSTORE]> %s failed: %s\", mode, err.Error())\n\t\t\t\t} else {\n\t\t\t\t\tif delete {\n\t\t\t\t\t\tcclog.Infof(\"[METRICSTORE]> done: %d checkpoints deleted\", n)\n\t\t\t\t\t} else {\n\t\t\t\t\t\tcclog.Infof(\"[METRICSTORE]> done: %d checkpoint files archived to parquet\", n)\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\t})\n}\n\nvar ErrNoNewArchiveData error = errors.New(\"all data already archived\")\n\n// CleanupCheckpoints deletes or archives all checkpoint files older than `from`.\n// When archiving, consolidates all hosts per cluster into a single Parquet file.\nfunc CleanupCheckpoints(checkpointsDir, cleanupDir string, from int64, deleteInstead bool) (int, error) {\n\tif deleteInstead {\n\t\treturn deleteCheckpoints(checkpointsDir, from)\n\t}\n\n\treturn archiveCheckpoints(checkpointsDir, cleanupDir, from)\n}\n\n// deleteCheckpoints removes checkpoint files older than `from` across all clusters/hosts.\nfunc deleteCheckpoints(checkpointsDir string, from int64) (int, error) {\n\tentries1, err := os.ReadDir(checkpointsDir)\n\tif err != nil {\n\t\treturn 0, err\n\t}\n\n\ttype workItem struct {\n\t\tdir string\n\t\tcluster, host string\n\t}\n\n\tvar wg sync.WaitGroup\n\tn, errs := int32(0), int32(0)\n\twork := make(chan workItem, Keys.NumWorkers)\n\n\twg.Add(Keys.NumWorkers)\n\tfor worker := 0; worker < Keys.NumWorkers; worker++ {\n\t\tgo func() {\n\t\t\tdefer wg.Done()\n\t\t\tfor item := range work {\n\t\t\t\tentries, err := os.ReadDir(item.dir)\n\t\t\t\tif err != nil {\n\t\t\t\t\tcclog.Errorf(\"error reading %s/%s: %s\", item.cluster, item.host, err.Error())\n\t\t\t\t\tatomic.AddInt32(&errs, 1)\n\t\t\t\t\tcontinue\n\t\t\t\t}\n\n\t\t\t\tfiles, err := findFiles(entries, from, false)\n\t\t\t\tif err != nil {\n\t\t\t\t\tcclog.Errorf(\"error finding files in %s/%s: %s\", item.cluster, item.host, err.Error())\n\t\t\t\t\tatomic.AddInt32(&errs, 1)\n\t\t\t\t\tcontinue\n\t\t\t\t}\n\n\t\t\t\tfor _, checkpoint := range files {\n\t\t\t\t\tif err := os.Remove(filepath.Join(item.dir, checkpoint)); err != nil {\n\t\t\t\t\t\tcclog.Errorf(\"error deleting %s/%s/%s: %s\", item.cluster, item.host, checkpoint, err.Error())\n\t\t\t\t\t\tatomic.AddInt32(&errs, 1)\n\t\t\t\t\t} else {\n\t\t\t\t\t\tatomic.AddInt32(&n, 1)\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t}\n\t\t}()\n\t}\n\n\tfor _, de1 := range entries1 {\n\t\tentries2, e := os.ReadDir(filepath.Join(checkpointsDir, de1.Name()))\n\t\tif e != nil {\n\t\t\terr = e\n\t\t\tcontinue\n\t\t}\n\n\t\tfor _, de2 := range entries2 {\n\t\t\twork <- workItem{\n\t\t\t\tdir: filepath.Join(checkpointsDir, de1.Name(), de2.Name()),\n\t\t\t\tcluster: de1.Name(),\n\t\t\t\thost: de2.Name(),\n\t\t\t}\n\t\t}\n\t}\n\n\tclose(work)\n\twg.Wait()\n\n\tif err != nil {\n\t\treturn int(n), err\n\t}\n\tif errs > 0 {\n\t\treturn int(n), fmt.Errorf(\"%d errors happened while deleting (%d successes)\", errs, n)\n\t}\n\treturn int(n), nil\n}\n\n// archiveCheckpoints archives checkpoint files to Parquet format.\n// Produces one Parquet file per cluster: <cleanupDir>/<cluster>/<timestamp>.parquet\n// Workers load checkpoint files from disk and send CheckpointFile trees on a\n// back-pressured channel. The main thread streams each tree directly to Parquet\n// rows without materializing all rows in memory.\nfunc archiveCheckpoints(checkpointsDir, cleanupDir string, from int64) (int, error) {\n\tcclog.Info(\"[METRICSTORE]> start archiving checkpoints to parquet\")\n\tstartTime := time.Now()\n\n\tclusterEntries, err := os.ReadDir(checkpointsDir)\n\tif err != nil {\n\t\treturn 0, err\n\t}\n\n\ttotalFiles := 0\n\n\tfor _, clusterEntry := range clusterEntries {\n\t\tif !clusterEntry.IsDir() {\n\t\t\tcontinue\n\t\t}\n\n\t\tcluster := clusterEntry.Name()\n\t\thostEntries, err := os.ReadDir(filepath.Join(checkpointsDir, cluster))\n\t\tif err != nil {\n\t\t\treturn totalFiles, err\n\t\t}\n\n\t\t// Workers load checkpoint files from disk; main thread writes to parquet.\n\t\ttype hostResult struct {\n\t\t\tcheckpoints []*CheckpointFile\n\t\t\thostname string\n\t\t\tfiles []string // checkpoint filenames to delete after successful write\n\t\t\tdir string // checkpoint directory for this host\n\t\t}\n\n\t\t// Small buffer provides back-pressure: at most NumWorkers+2 results in flight.\n\t\tresults := make(chan hostResult, 2)\n\t\twork := make(chan struct {\n\t\t\tdir, host string\n\t\t}, Keys.NumWorkers)\n\n\t\tvar wg sync.WaitGroup\n\t\terrs := int32(0)\n\n\t\twg.Add(Keys.NumWorkers)\n\t\tfor w := 0; w < Keys.NumWorkers; w++ {\n\t\t\tgo func() {\n\t\t\t\tdefer wg.Done()\n\t\t\t\tfor item := range work {\n\t\t\t\t\tcheckpoints, files, err := loadCheckpointFiles(item.dir, from)\n\t\t\t\t\tif err != nil {\n\t\t\t\t\t\tcclog.Errorf(\"[METRICSTORE]> error reading checkpoints for %s/%s: %s\", cluster, item.host, err.Error())\n\t\t\t\t\t\tatomic.AddInt32(&errs, 1)\n\t\t\t\t\t\tcontinue\n\t\t\t\t\t}\n\t\t\t\t\tif len(checkpoints) > 0 {\n\t\t\t\t\t\tresults <- hostResult{\n\t\t\t\t\t\t\tcheckpoints: checkpoints,\n\t\t\t\t\t\t\thostname: item.host,\n\t\t\t\t\t\t\tfiles: files,\n\t\t\t\t\t\t\tdir: item.dir,\n\t\t\t\t\t\t}\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t}()\n\t\t}\n\n\t\tgo func() {\n\t\t\tfor _, hostEntry := range hostEntries {\n\t\t\t\tif !hostEntry.IsDir() {\n\t\t\t\t\tcontinue\n\t\t\t\t}\n\t\t\t\tdir := filepath.Join(checkpointsDir, cluster, hostEntry.Name())\n\t\t\t\twork <- struct {\n\t\t\t\t\tdir, host string\n\t\t\t\t}{dir: dir, host: hostEntry.Name()}\n\t\t\t}\n\t\t\tclose(work)\n\t\t\twg.Wait()\n\t\t\tclose(results)\n\t\t}()\n\n\t\t// Open streaming writer and write each host's checkpoint files as a row group\n\t\tparquetFile := filepath.Join(cleanupDir, cluster, fmt.Sprintf(\"%d.parquet\", from))\n\t\twriter, err := newParquetArchiveWriter(parquetFile)\n\t\tif err != nil {\n\t\t\t// Drain results channel to unblock workers\n\t\t\tfor range results {\n\t\t\t}\n\t\t\treturn totalFiles, fmt.Errorf(\"creating parquet writer for cluster %s: %w\", cluster, err)\n\t\t}\n\n\t\ttype deleteItem struct {\n\t\t\tdir string\n\t\t\tfiles []string\n\t\t}\n\t\tvar toDelete []deleteItem\n\t\twriteErr := error(nil)\n\n\t\tfor r := range results {\n\t\t\tif writeErr == nil {\n\t\t\t\t// Stream each checkpoint file directly to parquet rows.\n\t\t\t\t// Each checkpoint is processed and discarded before the next.\n\t\t\t\tfor _, cf := range r.checkpoints {\n\t\t\t\t\tif err := writer.WriteCheckpointFile(cf, cluster, r.hostname, \"node\", \"\"); err != nil {\n\t\t\t\t\t\twriteErr = err\n\t\t\t\t\t\tbreak\n\t\t\t\t\t}\n\t\t\t\t}\ntttt// Flush once per host to keep row group count within parquet limits.\nttttif writeErr == nil {\ntttttif err := writer.FlushRowGroup(); err != nil {\nttttttwriteErr = err\nttttt}\ntttt}\n\t\t\t}\n\t\t\t// Always track files for deletion (even if write failed, we still drain)\n\t\t\ttoDelete = append(toDelete, deleteItem{dir: r.dir, files: r.files})\n\t\t}\n\n\t\tif err := writer.Close(); err != nil && writeErr == nil {\n\t\t\twriteErr = err\n\t\t}\n\n\t\tif errs > 0 {\n\t\t\treturn totalFiles, fmt.Errorf(\"%d errors reading checkpoints for cluster %s\", errs, cluster)\n\t\t}\n\n\t\tif writer.count == 0 {\n\t\t\t// No data written — remove empty file\n\t\t\tos.Remove(parquetFile)\n\t\t\tcontinue\n\t\t}\n\n\t\tif writeErr != nil {\n\t\t\tos.Remove(parquetFile)\n\t\t\treturn totalFiles, fmt.Errorf(\"writing parquet archive for cluster %s: %w\", cluster, writeErr)\n\t\t}\n\n\t\t// Delete archived checkpoint files\n\t\tfor _, item := range toDelete {\n\t\t\tfor _, file := range item.files {\n\t\t\t\tfilename := filepath.Join(item.dir, file)\n\t\t\t\tif err := os.Remove(filename); err != nil {\n\t\t\t\t\tcclog.Warnf(\"[METRICSTORE]> could not remove archived checkpoint %s: %v\", filename, err)\n\t\t\t\t} else {\n\t\t\t\t\ttotalFiles++\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\n\t\tcclog.Infof(\"[METRICSTORE]> archived %d rows from %d files for cluster %s to %s\",\n\t\t\twriter.count, totalFiles, cluster, parquetFile)\n\t}\n\n\tcclog.Infof(\"[METRICSTORE]> archiving checkpoints completed in %s (%d files)\", time.Since(startTime).Round(time.Millisecond), totalFiles)\n\treturn totalFiles, nil\n}\n"},"sourceToolAssistantUUID":"68e0faea-0cc8-46c2-99b9-28cdc4dd7283","userType":"external","entrypoint":"cli","cwd":"/Users/jan/prg/ClusterCockpit/cc-backend","sessionId":"0696ef34-7ff1-4c1e-9103-ffbca94f3ebd","version":"2.1.80","gitBranch":"hotfix","slug":"agile-napping-otter"}
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||
{"parentUuid":"8893342f-9b62-4597-aa13-624938455c02","isSidechain":false,"message":{"model":"claude-opus-4-6","id":"msg_01UDFZ9MX9rUAUn6g6VtDE3z","type":"message","role":"assistant","content":[{"type":"text","text":"Now let me verify both files compile and tests pass."}],"stop_reason":null,"stop_sequence":null,"usage":{"input_tokens":1,"cache_creation_input_tokens":3156,"cache_read_input_tokens":33990,"cache_creation":{"ephemeral_5m_input_tokens":0,"ephemeral_1h_input_tokens":3156},"output_tokens":3,"service_tier":"standard","inference_geo":"not_available"}},"requestId":"req_011CZKTcnKexUR3DoWu1DgkS","type":"assistant","uuid":"be404b10-2aaa-4256-aaef-47c09acf68ec","timestamp":"2026-03-23T05:28:26.810Z","userType":"external","entrypoint":"cli","cwd":"/Users/jan/prg/ClusterCockpit/cc-backend","sessionId":"0696ef34-7ff1-4c1e-9103-ffbca94f3ebd","version":"2.1.80","gitBranch":"hotfix","slug":"agile-napping-otter"}
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{"parentUuid":"be404b10-2aaa-4256-aaef-47c09acf68ec","isSidechain":false,"message":{"model":"claude-opus-4-6","id":"msg_01UDFZ9MX9rUAUn6g6VtDE3z","type":"message","role":"assistant","content":[{"type":"tool_use","id":"toolu_01YFt1KnpsqJy8G1jLyRjq9N","name":"Bash","input":{"command":"go build ./pkg/metricstore/...","description":"Build metricstore package"},"caller":{"type":"direct"}}],"stop_reason":"tool_use","stop_sequence":null,"usage":{"input_tokens":1,"cache_creation_input_tokens":3156,"cache_read_input_tokens":33990,"output_tokens":112,"server_tool_use":{"web_search_requests":0,"web_fetch_requests":0},"service_tier":"standard","cache_creation":{"ephemeral_1h_input_tokens":3156,"ephemeral_5m_input_tokens":0},"inference_geo":"","iterations":[],"speed":"standard"}},"requestId":"req_011CZKTcnKexUR3DoWu1DgkS","type":"assistant","uuid":"4efb1ab5-f023-4b2d-9042-75523f8c0679","timestamp":"2026-03-23T05:28:27.228Z","userType":"external","entrypoint":"cli","cwd":"/Users/jan/prg/ClusterCockpit/cc-backend","sessionId":"0696ef34-7ff1-4c1e-9103-ffbca94f3ebd","version":"2.1.80","gitBranch":"hotfix","slug":"agile-napping-otter"}
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{"parentUuid":"4efb1ab5-f023-4b2d-9042-75523f8c0679","isSidechain":false,"promptId":"4c9038e2-c763-4f23-82bf-037c28776776","type":"user","message":{"role":"user","content":[{"tool_use_id":"toolu_01YFt1KnpsqJy8G1jLyRjq9N","type":"tool_result","content":"(Bash completed with no output)","is_error":false}]},"uuid":"fbbcd1d8-f86b-4e19-9498-82357e5a8600","timestamp":"2026-03-23T05:28:28.479Z","toolUseResult":{"stdout":"","stderr":"","interrupted":false,"isImage":false,"noOutputExpected":false},"sourceToolAssistantUUID":"4efb1ab5-f023-4b2d-9042-75523f8c0679","userType":"external","entrypoint":"cli","cwd":"/Users/jan/prg/ClusterCockpit/cc-backend","sessionId":"0696ef34-7ff1-4c1e-9103-ffbca94f3ebd","version":"2.1.80","gitBranch":"hotfix","slug":"agile-napping-otter"}
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{"parentUuid":"fbbcd1d8-f86b-4e19-9498-82357e5a8600","isSidechain":false,"message":{"model":"claude-opus-4-6","id":"msg_01AZzxm2AXtCMkjZ2sxpENid","type":"message","role":"assistant","content":[{"type":"tool_use","id":"toolu_01GYCogHc7Aw1JsFVm1psQuh","name":"Bash","input":{"command":"go test ./pkg/metricstore/...","description":"Run metricstore tests"},"caller":{"type":"direct"}}],"stop_reason":"tool_use","stop_sequence":null,"usage":{"input_tokens":1,"cache_creation_input_tokens":111,"cache_read_input_tokens":37146,"output_tokens":100,"server_tool_use":{"web_search_requests":0,"web_fetch_requests":0},"service_tier":"standard","cache_creation":{"ephemeral_1h_input_tokens":111,"ephemeral_5m_input_tokens":0},"inference_geo":"","iterations":[],"speed":"standard"}},"requestId":"req_011CZKTd7w7jqXLZ9t3fsYQ5","type":"assistant","uuid":"b6b88b7d-cd7c-40a6-88b7-1a6bb514a4ed","timestamp":"2026-03-23T05:28:30.928Z","userType":"external","entrypoint":"cli","cwd":"/Users/jan/prg/ClusterCockpit/cc-backend","sessionId":"0696ef34-7ff1-4c1e-9103-ffbca94f3ebd","version":"2.1.80","gitBranch":"hotfix","slug":"agile-napping-otter"}
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{"parentUuid":"b6b88b7d-cd7c-40a6-88b7-1a6bb514a4ed","isSidechain":false,"promptId":"4c9038e2-c763-4f23-82bf-037c28776776","type":"user","message":{"role":"user","content":[{"tool_use_id":"toolu_01GYCogHc7Aw1JsFVm1psQuh","type":"tool_result","content":"ok \tgithub.com/ClusterCockpit/cc-backend/pkg/metricstore\t0.492s","is_error":false}]},"uuid":"9a64cf55-7dc9-4e2f-9f89-07203f0764af","timestamp":"2026-03-23T05:28:33.684Z","toolUseResult":{"stdout":"ok \tgithub.com/ClusterCockpit/cc-backend/pkg/metricstore\t0.492s","stderr":"","interrupted":false,"isImage":false,"noOutputExpected":false},"sourceToolAssistantUUID":"b6b88b7d-cd7c-40a6-88b7-1a6bb514a4ed","userType":"external","entrypoint":"cli","cwd":"/Users/jan/prg/ClusterCockpit/cc-backend","sessionId":"0696ef34-7ff1-4c1e-9103-ffbca94f3ebd","version":"2.1.80","gitBranch":"hotfix","slug":"agile-napping-otter"}
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{"parentUuid":"9a64cf55-7dc9-4e2f-9f89-07203f0764af","isSidechain":false,"message":{"model":"claude-opus-4-6","id":"msg_01KavNsjQdjpjGU7SW6jPGtP","type":"message","role":"assistant","content":[{"type":"text","text":"Both build and tests pass. Here's a summary of the changes:\n\n**`pkg/metricstore/parquetArchive.go`:**\n- Removed `w.writer.Flush()` from `WriteCheckpointFile()` — it no longer creates a row group per call\n- Added new `FlushRowGroup()` method that wraps `w.writer.Flush()` for explicit caller control\n\n**`pkg/metricstore/archive.go`:**\n- Added `writer.FlushRowGroup()` call after all checkpoint files for a host are written, flushing **once per host** instead of once per checkpoint file\n\nThis reduces the maximum row group count from `hosts × checkpoints_per_host` (which exceeded 32767) to just `hosts` (typically ~3000 for large clusters), well within the parquet limit."}],"stop_reason":"end_turn","stop_sequence":null,"usage":{"input_tokens":1,"cache_creation_input_tokens":120,"cache_read_input_tokens":37257,"output_tokens":194,"server_tool_use":{"web_search_requests":0,"web_fetch_requests":0},"service_tier":"standard","cache_creation":{"ephemeral_1h_input_tokens":120,"ephemeral_5m_input_tokens":0},"inference_geo":"","iterations":[],"speed":"standard"}},"requestId":"req_011CZKTdWDp2D2sxJChAFwo8","type":"assistant","uuid":"2c8c113d-ff36-4086-9f19-c62b3ff53a40","timestamp":"2026-03-23T05:28:40.001Z","userType":"external","entrypoint":"cli","cwd":"/Users/jan/prg/ClusterCockpit/cc-backend","sessionId":"0696ef34-7ff1-4c1e-9103-ffbca94f3ebd","version":"2.1.80","gitBranch":"hotfix","slug":"agile-napping-otter"}
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{"parentUuid":"2c8c113d-ff36-4086-9f19-c62b3ff53a40","isSidechain":false,"type":"progress","data":{"type":"hook_progress","hookEvent":"Stop","hookName":"Stop","command":"entire hooks claude-code stop"},"parentToolUseID":"119f9fa2-a8bc-4a9c-b335-b1838669e82a","toolUseID":"119f9fa2-a8bc-4a9c-b335-b1838669e82a","timestamp":"2026-03-23T05:28:40.075Z","uuid":"051432fb-f27a-4639-a64e-6da7978f0d72","userType":"external","entrypoint":"cli","cwd":"/Users/jan/prg/ClusterCockpit/cc-backend","sessionId":"0696ef34-7ff1-4c1e-9103-ffbca94f3ebd","version":"2.1.80","gitBranch":"hotfix","slug":"agile-napping-otter"}
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