From 40142966a8a41ace2ff51d6c72da6beb8960398f Mon Sep 17 00:00:00 2001 From: Jan Eitzinger Date: Mon, 23 Mar 2026 06:37:25 +0100 Subject: [PATCH] Checkpoint: 6000eb5a5bb8 Entire-Session: b843de8b-f396-4eb0-83ba-fb654a2b4072 Entire-Strategy: manual-commit Entire-Agent: Claude Code Ephemeral-branch: entire/586c902-e3b0c4 --- 60/00eb5a5bb8/0/content_hash.txt | 1 + 60/00eb5a5bb8/0/full.jsonl | 52 ++++++++++++++++++++++++++++++++ 60/00eb5a5bb8/0/metadata.json | 33 ++++++++++++++++++++ 60/00eb5a5bb8/metadata.json | 25 +++++++++++++++ 4 files changed, 111 insertions(+) create mode 100644 60/00eb5a5bb8/0/content_hash.txt create mode 100644 60/00eb5a5bb8/0/full.jsonl create mode 100644 60/00eb5a5bb8/0/metadata.json create mode 100644 60/00eb5a5bb8/metadata.json diff --git a/60/00eb5a5bb8/0/content_hash.txt b/60/00eb5a5bb8/0/content_hash.txt new file mode 100644 index 00000000..1ed42604 --- /dev/null +++ b/60/00eb5a5bb8/0/content_hash.txt @@ -0,0 +1 @@ +sha256:8d31e1a9b324c71b6564ec2857ebfdaae2dee85ac0b04fbc055732a13a4884a1 \ No newline at end of file diff --git a/60/00eb5a5bb8/0/full.jsonl b/60/00eb5a5bb8/0/full.jsonl new file mode 100644 index 00000000..0ffbee57 --- /dev/null +++ b/60/00eb5a5bb8/0/full.jsonl @@ -0,0 +1,52 @@ +{"type":"file-history-snapshot","messageId":"b6074f24-8632-4515-bd0e-2dd4c7d87bca","snapshot":{"messageId":"b6074f24-8632-4515-bd0e-2dd4c7d87bca","trackedFileBackups":{},"timestamp":"2026-03-23T05:35:38.320Z"},"isSnapshotUpdate":false} +{"parentUuid":null,"isSidechain":false,"type":"progress","data":{"type":"hook_progress","hookEvent":"SessionStart","hookName":"SessionStart:clear","command":"entire hooks claude-code session-start"},"parentToolUseID":"32e129fb-5b5d-45a8-aaa4-c233a8d6c43c","toolUseID":"32e129fb-5b5d-45a8-aaa4-c233a8d6c43c","timestamp":"2026-03-23T05:35:38.265Z","uuid":"8755edea-5def-4d25-a6c9-6953f731fa10","userType":"external","entrypoint":"cli","cwd":"/Users/jan/prg/ClusterCockpit/cc-backend","sessionId":"b843de8b-f396-4eb0-83ba-fb654a2b4072","version":"2.1.80","gitBranch":"hotfix","slug":"agile-napping-otter"} +{"parentUuid":"8755edea-5def-4d25-a6c9-6953f731fa10","isSidechain":false,"promptId":"3ebe3ca1-e9cc-430c-81f4-2daf32faef3e","type":"user","message":{"role":"user","content":"Implement the following plan:\n\n# Fix: Continue Archiving Other Clusters on Per-Cluster Errors\n\n## Context\n\nIn `archiveCheckpoints()` (`pkg/metricstore/archive.go:174`), the outer loop iterates over clusters. Four error paths inside this loop use `return`, which aborts archiving for **all** remaining clusters when one cluster fails. Errors should be logged and the loop should continue to the next cluster.\n\n## Error paths to fix (all inside the `for _, clusterEntry` loop)\n\n1. **Line 193** — `os.ReadDir(hostEntries)` fails → `return totalFiles, err`\n2. **Line 258** — `newParquetArchiveWriter()` fails → `return totalFiles, fmt.Errorf(...)`\n3. **Line 294** — worker `errs > 0` → `return totalFiles, fmt.Errorf(...)`\n4. **Line 305** — `writeErr != nil` → `return totalFiles, fmt.Errorf(...)`\n\n## Fix — `pkg/metricstore/archive.go`\n\nReplace all 4 early `return` statements with `cclog.Errorf(...)` + `continue` so the loop proceeds to the next cluster. Track whether any cluster had errors and return a summary error at the end (after all clusters have been attempted).\n\nSpecifically:\n- Add `var clusterErrors []string` before the loop\n- Each of the 4 error paths: log the error, append to `clusterErrors`, `continue`\n- After the loop: if `len(clusterErrors) > 0`, return a joined error summary\n- The drain-and-continue logic for the parquet writer failure (path 2) already exists and just needs `continue` instead of `return`\n- For paths 3 and 4: the parquet file cleanup (`os.Remove`) already happens, just need `continue` instead of `return`\n- For path 1: no cleanup needed, just skip this cluster\n\n## Verification\n\n- `go build ./pkg/metricstore/...`\n- `go test ./pkg/metricstore/...`\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/0696ef34-7ff1-4c1e-9103-ffbca94f3ebd.jsonl"},"uuid":"b6074f24-8632-4515-bd0e-2dd4c7d87bca","timestamp":"2026-03-23T05:35:38.115Z","planContent":"# Fix: Continue Archiving Other Clusters on Per-Cluster Errors\n\n## Context\n\nIn `archiveCheckpoints()` (`pkg/metricstore/archive.go:174`), the outer loop iterates over clusters. Four error paths inside this loop use `return`, which aborts archiving for **all** remaining clusters when one cluster fails. Errors should be logged and the loop should continue to the next cluster.\n\n## Error paths to fix (all inside the `for _, clusterEntry` loop)\n\n1. **Line 193** — `os.ReadDir(hostEntries)` fails → `return totalFiles, err`\n2. **Line 258** — `newParquetArchiveWriter()` fails → `return totalFiles, fmt.Errorf(...)`\n3. **Line 294** — worker `errs > 0` → `return totalFiles, fmt.Errorf(...)`\n4. **Line 305** — `writeErr != nil` → `return totalFiles, fmt.Errorf(...)`\n\n## Fix — `pkg/metricstore/archive.go`\n\nReplace all 4 early `return` statements with `cclog.Errorf(...)` + `continue` so the loop proceeds to the next cluster. Track whether any cluster had errors and return a summary error at the end (after all clusters have been attempted).\n\nSpecifically:\n- Add `var clusterErrors []string` before the loop\n- Each of the 4 error paths: log the error, append to `clusterErrors`, `continue`\n- After the loop: if `len(clusterErrors) > 0`, return a joined error summary\n- The drain-and-continue logic for the parquet writer failure (path 2) already exists and just needs `continue` instead of `return`\n- For paths 3 and 4: the parquet file cleanup (`os.Remove`) already happens, just need `continue` instead of `return`\n- For path 1: no cleanup needed, just skip this cluster\n\n## Verification\n\n- `go build ./pkg/metricstore/...`\n- `go test ./pkg/metricstore/...`\n","userType":"external","entrypoint":"cli","cwd":"/Users/jan/prg/ClusterCockpit/cc-backend","sessionId":"b843de8b-f396-4eb0-83ba-fb654a2b4072","version":"2.1.80","gitBranch":"hotfix","slug":"agile-napping-otter"} +{"type":"custom-title","customTitle":"fix-archive-cluster-errors","sessionId":"b843de8b-f396-4eb0-83ba-fb654a2b4072"} +{"type":"agent-name","agentName":"fix-archive-cluster-errors","sessionId":"b843de8b-f396-4eb0-83ba-fb654a2b4072"} +{"parentUuid":"b6074f24-8632-4515-bd0e-2dd4c7d87bca","isSidechain":false,"message":{"model":"claude-opus-4-6","id":"msg_01Krzhs9o7FZd3aAECwbdHMk","type":"message","role":"assistant","content":[{"type":"thinking","thinking":"","signature":"EtwBCkYICxgCKkCSb2ZMlhOzq59EV9y+zGXceu9kza+mQzWrpdv1DHyPzcUYXUHZNEqe7dJWFM+VWbl1sJq+RbG5HzU6hVJKFLdYEgz8aeo47jtUYGlSSB0aDPM7Hps31syGKra7nyIw9ETP5b7UO8R1jE1LVbLLP74NzXNospDDDXLqDzXvqATyRhJbQxv+nSHIE/I+QVe1KkRm+RlkozmOqfOfW/Y5Seolig4bR3XzEm/WI4zWdiG8lEA+TudOKTTRn6IoH7yoZw676ax7AkqTmssqgugJ3ia/d1a9HRgB"}],"stop_reason":null,"stop_sequence":null,"usage":{"input_tokens":3,"cache_creation_input_tokens":10852,"cache_read_input_tokens":8658,"cache_creation":{"ephemeral_5m_input_tokens":0,"ephemeral_1h_input_tokens":10852},"output_tokens":9,"service_tier":"standard","inference_geo":"not_available"}},"requestId":"req_011CZKUAp7T9AKewhD2QXyi3","type":"assistant","uuid":"d0c2d45e-4adc-4d2e-8028-87d758fe4f63","timestamp":"2026-03-23T05:35:41.498Z","userType":"external","entrypoint":"cli","cwd":"/Users/jan/prg/ClusterCockpit/cc-backend","sessionId":"b843de8b-f396-4eb0-83ba-fb654a2b4072","version":"2.1.80","gitBranch":"hotfix","slug":"agile-napping-otter"} +{"parentUuid":"d0c2d45e-4adc-4d2e-8028-87d758fe4f63","isSidechain":false,"message":{"model":"claude-opus-4-6","id":"msg_01Krzhs9o7FZd3aAECwbdHMk","type":"message","role":"assistant","content":[{"type":"tool_use","id":"toolu_01DE5eNvWF17UidWmWpRzmGu","name":"Read","input":{"file_path":"/Users/jan/prg/ClusterCockpit/cc-backend/pkg/metricstore/archive.go","offset":170,"limit":150},"caller":{"type":"direct"}}],"stop_reason":"tool_use","stop_sequence":null,"usage":{"input_tokens":3,"cache_creation_input_tokens":10852,"cache_read_input_tokens":8658,"output_tokens":140,"server_tool_use":{"web_search_requests":0,"web_fetch_requests":0},"service_tier":"standard","cache_creation":{"ephemeral_1h_input_tokens":10852,"ephemeral_5m_input_tokens":0},"inference_geo":"","iterations":[],"speed":"standard"}},"requestId":"req_011CZKUAp7T9AKewhD2QXyi3","type":"assistant","uuid":"debc2283-505c-43ae-b491-fab33a5c2635","timestamp":"2026-03-23T05:35:42.057Z","userType":"external","entrypoint":"cli","cwd":"/Users/jan/prg/ClusterCockpit/cc-backend","sessionId":"b843de8b-f396-4eb0-83ba-fb654a2b4072","version":"2.1.80","gitBranch":"hotfix","slug":"agile-napping-otter"} +{"parentUuid":"debc2283-505c-43ae-b491-fab33a5c2635","isSidechain":false,"type":"progress","data":{"type":"hook_progress","hookEvent":"PostToolUse","hookName":"PostToolUse:Read","command":"callback"},"parentToolUseID":"toolu_01DE5eNvWF17UidWmWpRzmGu","toolUseID":"toolu_01DE5eNvWF17UidWmWpRzmGu","timestamp":"2026-03-23T05:35:42.067Z","uuid":"68961f1d-d3c5-4f88-bde2-fdf13753c13e","userType":"external","entrypoint":"cli","cwd":"/Users/jan/prg/ClusterCockpit/cc-backend","sessionId":"b843de8b-f396-4eb0-83ba-fb654a2b4072","version":"2.1.80","gitBranch":"hotfix","slug":"agile-napping-otter"} +{"parentUuid":"debc2283-505c-43ae-b491-fab33a5c2635","isSidechain":false,"promptId":"3ebe3ca1-e9cc-430c-81f4-2daf32faef3e","type":"user","message":{"role":"user","content":[{"tool_use_id":"toolu_01DE5eNvWF17UidWmWpRzmGu","type":"tool_result","content":" 170→// Produces one Parquet file per cluster: //.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\t// Flush once per host to keep row group count within parquet limits.\n 279→\t\t\t\tif writeErr == nil {\n 280→\t\t\t\t\tif err := writer.FlushRowGroup(); err != nil {\n 281→\t\t\t\t\t\twriteErr = err\n 282→\t\t\t\t\t}\n 283→\t\t\t\t}\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→"}]},"uuid":"8dc1b961-5bfb-4b7f-be50-ee49e18887aa","timestamp":"2026-03-23T05:35:42.067Z","toolUseResult":{"type":"text","file":{"filePath":"/Users/jan/prg/ClusterCockpit/cc-backend/pkg/metricstore/archive.go","content":"// Produces one Parquet file per cluster: //.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","numLines":150,"startLine":170,"totalLines":327}},"sourceToolAssistantUUID":"debc2283-505c-43ae-b491-fab33a5c2635","userType":"external","entrypoint":"cli","cwd":"/Users/jan/prg/ClusterCockpit/cc-backend","sessionId":"b843de8b-f396-4eb0-83ba-fb654a2b4072","version":"2.1.80","gitBranch":"hotfix","slug":"agile-napping-otter"} +{"parentUuid":"8dc1b961-5bfb-4b7f-be50-ee49e18887aa","isSidechain":false,"message":{"model":"claude-opus-4-6","id":"msg_019f85vD9KB37ryrzyCSbtyC","type":"message","role":"assistant","content":[{"type":"tool_use","id":"toolu_01QDp6scjW3qVdaQz3uPqnJU","name":"Read","input":{"file_path":"/Users/jan/prg/ClusterCockpit/cc-backend/pkg/metricstore/archive.go","offset":319,"limit":20},"caller":{"type":"direct"}}],"stop_reason":"tool_use","stop_sequence":null,"usage":{"input_tokens":1,"cache_creation_input_tokens":2494,"cache_read_input_tokens":19510,"output_tokens":113,"server_tool_use":{"web_search_requests":0,"web_fetch_requests":0},"service_tier":"standard","cache_creation":{"ephemeral_1h_input_tokens":2494,"ephemeral_5m_input_tokens":0},"inference_geo":"","iterations":[],"speed":"standard"}},"requestId":"req_011CZKUB5ccBuEKqcktNtgDx","type":"assistant","uuid":"10a30e3b-fb16-4b0e-b37a-8867228e5f0d","timestamp":"2026-03-23T05:35:45.040Z","userType":"external","entrypoint":"cli","cwd":"/Users/jan/prg/ClusterCockpit/cc-backend","sessionId":"b843de8b-f396-4eb0-83ba-fb654a2b4072","version":"2.1.80","gitBranch":"hotfix","slug":"agile-napping-otter"} +{"parentUuid":"10a30e3b-fb16-4b0e-b37a-8867228e5f0d","isSidechain":false,"type":"progress","data":{"type":"hook_progress","hookEvent":"PostToolUse","hookName":"PostToolUse:Read","command":"callback"},"parentToolUseID":"toolu_01QDp6scjW3qVdaQz3uPqnJU","toolUseID":"toolu_01QDp6scjW3qVdaQz3uPqnJU","timestamp":"2026-03-23T05:35:45.052Z","uuid":"ebf914cd-f134-4784-8f45-9afc7bebf119","userType":"external","entrypoint":"cli","cwd":"/Users/jan/prg/ClusterCockpit/cc-backend","sessionId":"b843de8b-f396-4eb0-83ba-fb654a2b4072","version":"2.1.80","gitBranch":"hotfix","slug":"agile-napping-otter"} +{"parentUuid":"10a30e3b-fb16-4b0e-b37a-8867228e5f0d","isSidechain":false,"promptId":"3ebe3ca1-e9cc-430c-81f4-2daf32faef3e","type":"user","message":{"role":"user","content":[{"tool_use_id":"toolu_01QDp6scjW3qVdaQz3uPqnJU","type":"tool_result","content":" 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":"f89a1ab6-d36b-41a0-837d-62f6a9596d67","timestamp":"2026-03-23T05:35:45.052Z","toolUseResult":{"type":"text","file":{"filePath":"/Users/jan/prg/ClusterCockpit/cc-backend/pkg/metricstore/archive.go","content":"\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":9,"startLine":319,"totalLines":327}},"sourceToolAssistantUUID":"10a30e3b-fb16-4b0e-b37a-8867228e5f0d","userType":"external","entrypoint":"cli","cwd":"/Users/jan/prg/ClusterCockpit/cc-backend","sessionId":"b843de8b-f396-4eb0-83ba-fb654a2b4072","version":"2.1.80","gitBranch":"hotfix","slug":"agile-napping-otter"} +{"parentUuid":"f89a1ab6-d36b-41a0-837d-62f6a9596d67","isSidechain":false,"message":{"model":"claude-opus-4-6","id":"msg_01FF1vw55QLjSNASytiJDdYQ","type":"message","role":"assistant","content":[{"type":"text","text":"Now I have the full picture. Let me apply the changes:"}],"stop_reason":null,"stop_sequence":null,"usage":{"input_tokens":1,"cache_creation_input_tokens":2754,"cache_read_input_tokens":19510,"cache_creation":{"ephemeral_5m_input_tokens":0,"ephemeral_1h_input_tokens":2754},"output_tokens":1,"service_tier":"standard","inference_geo":"not_available"}},"requestId":"req_011CZKUBJZj32qEWymJeS3jt","type":"assistant","uuid":"b5b8c414-4e45-4660-b44b-65c21a9d677d","timestamp":"2026-03-23T05:35:47.942Z","userType":"external","entrypoint":"cli","cwd":"/Users/jan/prg/ClusterCockpit/cc-backend","sessionId":"b843de8b-f396-4eb0-83ba-fb654a2b4072","version":"2.1.80","gitBranch":"hotfix","slug":"agile-napping-otter"} +{"type":"file-history-snapshot","messageId":"26a44172-8862-48d3-bfda-2bc7c0240857","snapshot":{"messageId":"b6074f24-8632-4515-bd0e-2dd4c7d87bca","trackedFileBackups":{"pkg/metricstore/archive.go":{"backupFileName":"e494d1fe775e2cee@v1","version":1,"backupTime":"2026-03-23T05:35:48.943Z"}},"timestamp":"2026-03-23T05:35:38.320Z"},"isSnapshotUpdate":true} +{"parentUuid":"b5b8c414-4e45-4660-b44b-65c21a9d677d","isSidechain":false,"message":{"model":"claude-opus-4-6","id":"msg_01FF1vw55QLjSNASytiJDdYQ","type":"message","role":"assistant","content":[{"type":"tool_use","id":"toolu_019LZx2gig2dcBQ8wZcSFouU","name":"Edit","input":{"replace_all":false,"file_path":"/Users/jan/prg/ClusterCockpit/cc-backend/pkg/metricstore/archive.go","old_string":"\ttotalFiles := 0\n\n\tfor _, clusterEntry := range clusterEntries {","new_string":"\ttotalFiles := 0\n\tvar clusterErrors []string\n\n\tfor _, clusterEntry := range clusterEntries {"},"caller":{"type":"direct"}}],"stop_reason":"tool_use","stop_sequence":null,"usage":{"input_tokens":1,"cache_creation_input_tokens":2754,"cache_read_input_tokens":19510,"output_tokens":177,"server_tool_use":{"web_search_requests":0,"web_fetch_requests":0},"service_tier":"standard","cache_creation":{"ephemeral_1h_input_tokens":2754,"ephemeral_5m_input_tokens":0},"inference_geo":"","iterations":[],"speed":"standard"}},"requestId":"req_011CZKUBJZj32qEWymJeS3jt","type":"assistant","uuid":"26a44172-8862-48d3-bfda-2bc7c0240857","timestamp":"2026-03-23T05:35:48.920Z","userType":"external","entrypoint":"cli","cwd":"/Users/jan/prg/ClusterCockpit/cc-backend","sessionId":"b843de8b-f396-4eb0-83ba-fb654a2b4072","version":"2.1.80","gitBranch":"hotfix","slug":"agile-napping-otter"} +{"parentUuid":"26a44172-8862-48d3-bfda-2bc7c0240857","isSidechain":false,"type":"progress","data":{"type":"hook_progress","hookEvent":"PostToolUse","hookName":"PostToolUse:Edit","command":"callback"},"parentToolUseID":"toolu_019LZx2gig2dcBQ8wZcSFouU","toolUseID":"toolu_019LZx2gig2dcBQ8wZcSFouU","timestamp":"2026-03-23T05:35:48.948Z","uuid":"24690f26-a001-44f4-92d3-6b93b29a9cc7","userType":"external","entrypoint":"cli","cwd":"/Users/jan/prg/ClusterCockpit/cc-backend","sessionId":"b843de8b-f396-4eb0-83ba-fb654a2b4072","version":"2.1.80","gitBranch":"hotfix","slug":"agile-napping-otter"} +{"parentUuid":"26a44172-8862-48d3-bfda-2bc7c0240857","isSidechain":false,"promptId":"3ebe3ca1-e9cc-430c-81f4-2daf32faef3e","type":"user","message":{"role":"user","content":[{"tool_use_id":"toolu_019LZx2gig2dcBQ8wZcSFouU","type":"tool_result","content":"The file /Users/jan/prg/ClusterCockpit/cc-backend/pkg/metricstore/archive.go has been updated successfully."}]},"uuid":"dbdda926-478b-4bba-a4a0-9175cfcfd308","timestamp":"2026-03-23T05:35:48.947Z","toolUseResult":{"filePath":"/Users/jan/prg/ClusterCockpit/cc-backend/pkg/metricstore/archive.go","oldString":"\ttotalFiles := 0\n\n\tfor _, clusterEntry := range clusterEntries {","newString":"\ttotalFiles := 0\n\tvar clusterErrors []string\n\n\tfor _, clusterEntry := range clusterEntries {","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: //.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":181,"oldLines":6,"newStart":181,"newLines":7,"lines":[" }"," "," totalFiles := 0","+ var clusterErrors []string"," "," for _, clusterEntry := range clusterEntries {"," if !clusterEntry.IsDir() {"]}],"userModified":false,"replaceAll":false},"sourceToolAssistantUUID":"26a44172-8862-48d3-bfda-2bc7c0240857","userType":"external","entrypoint":"cli","cwd":"/Users/jan/prg/ClusterCockpit/cc-backend","sessionId":"b843de8b-f396-4eb0-83ba-fb654a2b4072","version":"2.1.80","gitBranch":"hotfix","slug":"agile-napping-otter"} +{"parentUuid":"dbdda926-478b-4bba-a4a0-9175cfcfd308","isSidechain":false,"message":{"model":"claude-opus-4-6","id":"msg_01NiiwczaRfivDGgpsygRrXh","type":"message","role":"assistant","content":[{"type":"tool_use","id":"toolu_01NZak6H9EFFSHc8CeVckSgn","name":"Edit","input":{"replace_all":false,"file_path":"/Users/jan/prg/ClusterCockpit/cc-backend/pkg/metricstore/archive.go","old_string":"\t\thostEntries, err := os.ReadDir(filepath.Join(checkpointsDir, cluster))\n\t\tif err != nil {\n\t\t\treturn totalFiles, err\n\t\t}","new_string":"\t\thostEntries, err := os.ReadDir(filepath.Join(checkpointsDir, cluster))\n\t\tif err != nil {\n\t\t\tcclog.Errorf(\"[METRICSTORE]> error reading host entries for cluster %s: %s\", cluster, err.Error())\n\t\t\tclusterErrors = append(clusterErrors, cluster)\n\t\t\tcontinue\n\t\t}"},"caller":{"type":"direct"}}],"stop_reason":"tool_use","stop_sequence":null,"usage":{"input_tokens":1,"cache_creation_input_tokens":241,"cache_read_input_tokens":22264,"output_tokens":238,"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_011CZKUBb6PkQiuM6t9n4Qe3","type":"assistant","uuid":"f08198db-6803-4db1-bc31-5d79ad28766a","timestamp":"2026-03-23T05:35:53.265Z","userType":"external","entrypoint":"cli","cwd":"/Users/jan/prg/ClusterCockpit/cc-backend","sessionId":"b843de8b-f396-4eb0-83ba-fb654a2b4072","version":"2.1.80","gitBranch":"hotfix","slug":"agile-napping-otter"} +{"parentUuid":"f08198db-6803-4db1-bc31-5d79ad28766a","isSidechain":false,"type":"progress","data":{"type":"hook_progress","hookEvent":"PostToolUse","hookName":"PostToolUse:Edit","command":"callback"},"parentToolUseID":"toolu_01NZak6H9EFFSHc8CeVckSgn","toolUseID":"toolu_01NZak6H9EFFSHc8CeVckSgn","timestamp":"2026-03-23T05:35:53.291Z","uuid":"e0f5a2d1-0446-4d57-b047-f4de5cbc99e3","userType":"external","entrypoint":"cli","cwd":"/Users/jan/prg/ClusterCockpit/cc-backend","sessionId":"b843de8b-f396-4eb0-83ba-fb654a2b4072","version":"2.1.80","gitBranch":"hotfix","slug":"agile-napping-otter"} +{"parentUuid":"f08198db-6803-4db1-bc31-5d79ad28766a","isSidechain":false,"promptId":"3ebe3ca1-e9cc-430c-81f4-2daf32faef3e","type":"user","message":{"role":"user","content":[{"tool_use_id":"toolu_01NZak6H9EFFSHc8CeVckSgn","type":"tool_result","content":"The file /Users/jan/prg/ClusterCockpit/cc-backend/pkg/metricstore/archive.go has been updated successfully."}]},"uuid":"3c181ed3-7608-4162-a27d-68041de49e3f","timestamp":"2026-03-23T05:35:53.291Z","toolUseResult":{"filePath":"/Users/jan/prg/ClusterCockpit/cc-backend/pkg/metricstore/archive.go","oldString":"\t\thostEntries, err := os.ReadDir(filepath.Join(checkpointsDir, cluster))\n\t\tif err != nil {\n\t\t\treturn totalFiles, err\n\t\t}","newString":"\t\thostEntries, err := os.ReadDir(filepath.Join(checkpointsDir, cluster))\n\t\tif err != nil {\n\t\t\tcclog.Errorf(\"[METRICSTORE]> error reading host entries for cluster %s: %s\", cluster, err.Error())\n\t\t\tclusterErrors = append(clusterErrors, cluster)\n\t\t\tcontinue\n\t\t}","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: //.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\tvar clusterErrors []string\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":191,"oldLines":7,"newStart":191,"newLines":9,"lines":[" cluster := clusterEntry.Name()"," hostEntries, err := os.ReadDir(filepath.Join(checkpointsDir, cluster))"," if err != nil {","- return totalFiles, err","+ cclog.Errorf(\"[METRICSTORE]> error reading host entries for cluster %s: %s\", cluster, err.Error())","+ clusterErrors = append(clusterErrors, cluster)","+ continue"," }"," "," // Workers load checkpoint files from disk; main thread writes to parquet."]}],"userModified":false,"replaceAll":false},"sourceToolAssistantUUID":"f08198db-6803-4db1-bc31-5d79ad28766a","userType":"external","entrypoint":"cli","cwd":"/Users/jan/prg/ClusterCockpit/cc-backend","sessionId":"b843de8b-f396-4eb0-83ba-fb654a2b4072","version":"2.1.80","gitBranch":"hotfix","slug":"agile-napping-otter"} 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cluster)\n\t\t\tcontinue"},"caller":{"type":"direct"}}],"stop_reason":"tool_use","stop_sequence":null,"usage":{"input_tokens":1,"cache_creation_input_tokens":369,"cache_read_input_tokens":22505,"output_tokens":250,"server_tool_use":{"web_search_requests":0,"web_fetch_requests":0},"service_tier":"standard","cache_creation":{"ephemeral_1h_input_tokens":369,"ephemeral_5m_input_tokens":0},"inference_geo":"","iterations":[],"speed":"standard"}},"requestId":"req_011CZKUBuj4q84tVBea8acE5","type":"assistant","uuid":"923cd6f4-3242-4001-b95b-ca0480150d3a","timestamp":"2026-03-23T05:35:57.998Z","userType":"external","entrypoint":"cli","cwd":"/Users/jan/prg/ClusterCockpit/cc-backend","sessionId":"b843de8b-f396-4eb0-83ba-fb654a2b4072","version":"2.1.80","gitBranch":"hotfix","slug":"agile-napping-otter"} 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err)","sourceToolAssistantUUID":"923cd6f4-3242-4001-b95b-ca0480150d3a","userType":"external","entrypoint":"cli","cwd":"/Users/jan/prg/ClusterCockpit/cc-backend","sessionId":"b843de8b-f396-4eb0-83ba-fb654a2b4072","version":"2.1.80","gitBranch":"hotfix","slug":"agile-napping-otter"} 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+{"parentUuid":"f38db41d-0b8d-4d1e-b318-ce8964fddbcd","isSidechain":false,"type":"progress","data":{"type":"hook_progress","hookEvent":"PostToolUse","hookName":"PostToolUse:Read","command":"callback"},"parentToolUseID":"toolu_01JoUv5xsMYais9RzpXVZ8Yy","toolUseID":"toolu_01JoUv5xsMYais9RzpXVZ8Yy","timestamp":"2026-03-23T05:36:01.133Z","uuid":"18f61dad-c8c1-4829-a1f5-478ab4fbb540","userType":"external","entrypoint":"cli","cwd":"/Users/jan/prg/ClusterCockpit/cc-backend","sessionId":"b843de8b-f396-4eb0-83ba-fb654a2b4072","version":"2.1.80","gitBranch":"hotfix","slug":"agile-napping-otter"} +{"parentUuid":"f38db41d-0b8d-4d1e-b318-ce8964fddbcd","isSidechain":false,"promptId":"3ebe3ca1-e9cc-430c-81f4-2daf32faef3e","type":"user","message":{"role":"user","content":[{"tool_use_id":"toolu_01JoUv5xsMYais9RzpXVZ8Yy","type":"tool_result","content":" 252→\t\t}()\n 253→\n 254→\t\t// Open streaming writer and write each host's checkpoint files as a row group\n 255→\t\tparquetFile := filepath.Join(cleanupDir, cluster, fmt.Sprintf(\"%d.parquet\", from))\n 256→\t\twriter, err := newParquetArchiveWriter(parquetFile)\n 257→\t\tif err != nil {\n 258→\t\t\t// Drain results channel to unblock workers\n 259→\t\t\tfor range results {\n 260→\t\t\t}\n 261→\t\t\treturn totalFiles, fmt.Errorf(\"creating parquet writer for cluster %s: %w\", cluster, err)\n 262→\t\t}\n 263→\n 264→\t\ttype deleteItem struct {\n 265→\t\t\tdir string\n 266→\t\t\tfiles []string"}]},"uuid":"b95ac019-340c-42ab-8059-3fa903cb80dc","timestamp":"2026-03-23T05:36:01.132Z","toolUseResult":{"type":"text","file":{"filePath":"/Users/jan/prg/ClusterCockpit/cc-backend/pkg/metricstore/archive.go","content":"\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","numLines":15,"startLine":252,"totalLines":330}},"sourceToolAssistantUUID":"f38db41d-0b8d-4d1e-b318-ce8964fddbcd","userType":"external","entrypoint":"cli","cwd":"/Users/jan/prg/ClusterCockpit/cc-backend","sessionId":"b843de8b-f396-4eb0-83ba-fb654a2b4072","version":"2.1.80","gitBranch":"hotfix","slug":"agile-napping-otter"} +{"parentUuid":"b95ac019-340c-42ab-8059-3fa903cb80dc","isSidechain":false,"message":{"model":"claude-opus-4-6","id":"msg_013uFV57SAQ8JY9w4C2U9tHK","type":"message","role":"assistant","content":[{"type":"tool_use","id":"toolu_01Ra5bZaN8K9K2moM2mGrU8D","name":"Edit","input":{"replace_all":false,"file_path":"/Users/jan/prg/ClusterCockpit/cc-backend/pkg/metricstore/archive.go","old_string":"\t\t\treturn totalFiles, fmt.Errorf(\"creating parquet writer for cluster %s: %w\", cluster, err)","new_string":"\t\t\tcclog.Errorf(\"[METRICSTORE]> error creating parquet writer for cluster %s: %s\", cluster, err.Error())\n\t\t\tclusterErrors = append(clusterErrors, cluster)\n\t\t\tcontinue"},"caller":{"type":"direct"}}],"stop_reason":"tool_use","stop_sequence":null,"usage":{"input_tokens":1,"cache_creation_input_tokens":726,"cache_read_input_tokens":22874,"output_tokens":210,"server_tool_use":{"web_search_requests":0,"web_fetch_requests":0},"service_tier":"standard","cache_creation":{"ephemeral_1h_input_tokens":726,"ephemeral_5m_input_tokens":0},"inference_geo":"","iterations":[],"speed":"standard"}},"requestId":"req_011CZKUCV8k42dnbYQANziQR","type":"assistant","uuid":"bd79e309-5eea-4aea-9391-0be114cbb1cf","timestamp":"2026-03-23T05:36:07.038Z","userType":"external","entrypoint":"cli","cwd":"/Users/jan/prg/ClusterCockpit/cc-backend","sessionId":"b843de8b-f396-4eb0-83ba-fb654a2b4072","version":"2.1.80","gitBranch":"hotfix","slug":"agile-napping-otter"} 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successfully."}]},"uuid":"c8944fc8-8218-480e-a922-c6f5359c48a6","timestamp":"2026-03-23T05:36:07.055Z","toolUseResult":{"filePath":"/Users/jan/prg/ClusterCockpit/cc-backend/pkg/metricstore/archive.go","oldString":"\t\t\treturn totalFiles, fmt.Errorf(\"creating parquet writer for cluster %s: %w\", cluster, err)","newString":"\t\t\tcclog.Errorf(\"[METRICSTORE]> error creating parquet writer for cluster %s: %s\", cluster, err.Error())\n\t\t\tclusterErrors = append(clusterErrors, cluster)\n\t\t\tcontinue","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: //.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\tvar clusterErrors []string\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\tcclog.Errorf(\"[METRICSTORE]> error reading host entries for cluster %s: %s\", cluster, err.Error())\n\t\t\tclusterErrors = append(clusterErrors, cluster)\n\t\t\tcontinue\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":258,"oldLines":7,"newStart":258,"newLines":9,"lines":[" // Drain results channel to unblock workers"," for range results {"," }","- return totalFiles, fmt.Errorf(\"creating parquet writer for cluster %s: %w\", cluster, err)","+ cclog.Errorf(\"[METRICSTORE]> error creating parquet writer for cluster %s: %s\", cluster, err.Error())","+ clusterErrors = append(clusterErrors, cluster)","+ continue"," }"," "," type deleteItem struct {"]}],"userModified":false,"replaceAll":false},"sourceToolAssistantUUID":"bd79e309-5eea-4aea-9391-0be114cbb1cf","userType":"external","entrypoint":"cli","cwd":"/Users/jan/prg/ClusterCockpit/cc-backend","sessionId":"b843de8b-f396-4eb0-83ba-fb654a2b4072","version":"2.1.80","gitBranch":"hotfix","slug":"agile-napping-otter"} +{"parentUuid":"c8944fc8-8218-480e-a922-c6f5359c48a6","isSidechain":false,"message":{"model":"claude-opus-4-6","id":"msg_01TqG3V9UZPTvRpp8bDbctzr","type":"message","role":"assistant","content":[{"type":"tool_use","id":"toolu_01FUg9ucJjkmg1LrwzxM1UyU","name":"Edit","input":{"replace_all":false,"file_path":"/Users/jan/prg/ClusterCockpit/cc-backend/pkg/metricstore/archive.go","old_string":"\t\tif errs > 0 {\n\t\t\treturn totalFiles, fmt.Errorf(\"%d errors reading checkpoints for cluster %s\", errs, cluster)\n\t\t}","new_string":"\t\tif errs > 0 {\n\t\t\tcclog.Errorf(\"[METRICSTORE]> %d errors reading checkpoints for cluster %s\", errs, cluster)\n\t\t\tclusterErrors = append(clusterErrors, cluster)\n\t\t\tos.Remove(parquetFile)\n\t\t\tcontinue\n\t\t}"},"caller":{"type":"direct"}}],"stop_reason":"tool_use","stop_sequence":null,"usage":{"input_tokens":1,"cache_creation_input_tokens":255,"cache_read_input_tokens":23600,"output_tokens":242,"server_tool_use":{"web_search_requests":0,"web_fetch_requests":0},"service_tier":"standard","cache_creation":{"ephemeral_1h_input_tokens":255,"ephemeral_5m_input_tokens":0},"inference_geo":"","iterations":[],"speed":"standard"}},"requestId":"req_011CZKUCvTzYw3ERmijf1ecK","type":"assistant","uuid":"5c55f56f-b570-453e-896b-c8bbedc971f8","timestamp":"2026-03-23T05:36:10.587Z","userType":"external","entrypoint":"cli","cwd":"/Users/jan/prg/ClusterCockpit/cc-backend","sessionId":"b843de8b-f396-4eb0-83ba-fb654a2b4072","version":"2.1.80","gitBranch":"hotfix","slug":"agile-napping-otter"} +{"parentUuid":"5c55f56f-b570-453e-896b-c8bbedc971f8","isSidechain":false,"type":"progress","data":{"type":"hook_progress","hookEvent":"PostToolUse","hookName":"PostToolUse:Edit","command":"callback"},"parentToolUseID":"toolu_01FUg9ucJjkmg1LrwzxM1UyU","toolUseID":"toolu_01FUg9ucJjkmg1LrwzxM1UyU","timestamp":"2026-03-23T05:36:10.609Z","uuid":"b8ccbe27-46c8-46c0-a3f1-31d4acafb5f2","userType":"external","entrypoint":"cli","cwd":"/Users/jan/prg/ClusterCockpit/cc-backend","sessionId":"b843de8b-f396-4eb0-83ba-fb654a2b4072","version":"2.1.80","gitBranch":"hotfix","slug":"agile-napping-otter"} +{"parentUuid":"5c55f56f-b570-453e-896b-c8bbedc971f8","isSidechain":false,"promptId":"3ebe3ca1-e9cc-430c-81f4-2daf32faef3e","type":"user","message":{"role":"user","content":[{"tool_use_id":"toolu_01FUg9ucJjkmg1LrwzxM1UyU","type":"tool_result","content":"The file /Users/jan/prg/ClusterCockpit/cc-backend/pkg/metricstore/archive.go has been updated successfully."}]},"uuid":"7c5a4cf8-e3bf-47d2-86cd-852505fa3d27","timestamp":"2026-03-23T05:36:10.609Z","toolUseResult":{"filePath":"/Users/jan/prg/ClusterCockpit/cc-backend/pkg/metricstore/archive.go","oldString":"\t\tif errs > 0 {\n\t\t\treturn totalFiles, fmt.Errorf(\"%d errors reading checkpoints for cluster %s\", errs, cluster)\n\t\t}","newString":"\t\tif errs > 0 {\n\t\t\tcclog.Errorf(\"[METRICSTORE]> %d errors reading checkpoints for cluster %s\", errs, cluster)\n\t\t\tclusterErrors = append(clusterErrors, cluster)\n\t\t\tos.Remove(parquetFile)\n\t\t\tcontinue\n\t\t}","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: //.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\tvar clusterErrors []string\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\tcclog.Errorf(\"[METRICSTORE]> error reading host entries for cluster %s: %s\", cluster, err.Error())\n\t\t\tclusterErrors = append(clusterErrors, cluster)\n\t\t\tcontinue\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\tcclog.Errorf(\"[METRICSTORE]> error creating parquet writer for cluster %s: %s\", cluster, err.Error())\n\t\t\tclusterErrors = append(clusterErrors, cluster)\n\t\t\tcontinue\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":296,"oldLines":7,"newStart":296,"newLines":10,"lines":[" }"," "," if errs > 0 {","- return totalFiles, fmt.Errorf(\"%d errors reading checkpoints for cluster %s\", errs, cluster)","+ cclog.Errorf(\"[METRICSTORE]> %d errors reading checkpoints for cluster %s\", errs, cluster)","+ clusterErrors = append(clusterErrors, cluster)","+ os.Remove(parquetFile)","+ continue"," }"," "," if writer.count == 0 {"]}],"userModified":false,"replaceAll":false},"sourceToolAssistantUUID":"5c55f56f-b570-453e-896b-c8bbedc971f8","userType":"external","entrypoint":"cli","cwd":"/Users/jan/prg/ClusterCockpit/cc-backend","sessionId":"b843de8b-f396-4eb0-83ba-fb654a2b4072","version":"2.1.80","gitBranch":"hotfix","slug":"agile-napping-otter"} +{"parentUuid":"7c5a4cf8-e3bf-47d2-86cd-852505fa3d27","isSidechain":false,"message":{"model":"claude-opus-4-6","id":"msg_01GfTb7NRHEnUKB4TzmkgUDa","type":"message","role":"assistant","content":[{"type":"tool_use","id":"toolu_01Rh6ztL86EGK1nk3kryF6qX","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\tos.Remove(parquetFile)\n\t\t\treturn totalFiles, fmt.Errorf(\"writing parquet archive for cluster %s: %w\", cluster, writeErr)\n\t\t}","new_string":"\t\tif writeErr != nil {\n\t\t\tos.Remove(parquetFile)\n\t\t\tcclog.Errorf(\"[METRICSTORE]> error writing parquet archive for cluster %s: %s\", cluster, writeErr.Error())\n\t\t\tclusterErrors = append(clusterErrors, cluster)\n\t\t\tcontinue\n\t\t}"},"caller":{"type":"direct"}}],"stop_reason":"tool_use","stop_sequence":null,"usage":{"input_tokens":1,"cache_creation_input_tokens":287,"cache_read_input_tokens":23855,"output_tokens":255,"server_tool_use":{"web_search_requests":0,"web_fetch_requests":0},"service_tier":"standard","cache_creation":{"ephemeral_1h_input_tokens":287,"ephemeral_5m_input_tokens":0},"inference_geo":"","iterations":[],"speed":"standard"}},"requestId":"req_011CZKUDBmFFWRYRtwxZRQx4","type":"assistant","uuid":"de23e674-040f-4a35-b73b-38325ef9a39e","timestamp":"2026-03-23T05:36:14.236Z","userType":"external","entrypoint":"cli","cwd":"/Users/jan/prg/ClusterCockpit/cc-backend","sessionId":"b843de8b-f396-4eb0-83ba-fb654a2b4072","version":"2.1.80","gitBranch":"hotfix","slug":"agile-napping-otter"} +{"parentUuid":"de23e674-040f-4a35-b73b-38325ef9a39e","isSidechain":false,"type":"progress","data":{"type":"hook_progress","hookEvent":"PostToolUse","hookName":"PostToolUse:Edit","command":"callback"},"parentToolUseID":"toolu_01Rh6ztL86EGK1nk3kryF6qX","toolUseID":"toolu_01Rh6ztL86EGK1nk3kryF6qX","timestamp":"2026-03-23T05:36:14.251Z","uuid":"2a74de37-cf5c-4fb7-bcdf-1009d9002539","userType":"external","entrypoint":"cli","cwd":"/Users/jan/prg/ClusterCockpit/cc-backend","sessionId":"b843de8b-f396-4eb0-83ba-fb654a2b4072","version":"2.1.80","gitBranch":"hotfix","slug":"agile-napping-otter"} +{"parentUuid":"de23e674-040f-4a35-b73b-38325ef9a39e","isSidechain":false,"promptId":"3ebe3ca1-e9cc-430c-81f4-2daf32faef3e","type":"user","message":{"role":"user","content":[{"tool_use_id":"toolu_01Rh6ztL86EGK1nk3kryF6qX","type":"tool_result","content":"The file /Users/jan/prg/ClusterCockpit/cc-backend/pkg/metricstore/archive.go has been updated successfully."}]},"uuid":"33c9fc56-03ec-4c6e-a5e9-bcd71ff413be","timestamp":"2026-03-23T05:36:14.251Z","toolUseResult":{"filePath":"/Users/jan/prg/ClusterCockpit/cc-backend/pkg/metricstore/archive.go","oldString":"\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}","newString":"\t\tif writeErr != nil {\n\t\t\tos.Remove(parquetFile)\n\t\t\tcclog.Errorf(\"[METRICSTORE]> error writing parquet archive for cluster %s: %s\", cluster, writeErr.Error())\n\t\t\tclusterErrors = append(clusterErrors, cluster)\n\t\t\tcontinue\n\t\t}","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: //.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\tvar clusterErrors []string\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\tcclog.Errorf(\"[METRICSTORE]> error reading host entries for cluster %s: %s\", cluster, err.Error())\n\t\t\tclusterErrors = append(clusterErrors, cluster)\n\t\t\tcontinue\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\tcclog.Errorf(\"[METRICSTORE]> error creating parquet writer for cluster %s: %s\", cluster, err.Error())\n\t\t\tclusterErrors = append(clusterErrors, cluster)\n\t\t\tcontinue\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\tcclog.Errorf(\"[METRICSTORE]> %d errors reading checkpoints for cluster %s\", errs, cluster)\n\t\t\tclusterErrors = append(clusterErrors, cluster)\n\t\t\tos.Remove(parquetFile)\n\t\t\tcontinue\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":310,"oldLines":7,"newStart":310,"newLines":9,"lines":[" "," if writeErr != nil {"," os.Remove(parquetFile)","- return totalFiles, fmt.Errorf(\"writing parquet archive for cluster %s: %w\", cluster, writeErr)","+ cclog.Errorf(\"[METRICSTORE]> error writing parquet archive for cluster %s: %s\", cluster, writeErr.Error())","+ clusterErrors = append(clusterErrors, cluster)","+ continue"," }"," "," // Delete archived checkpoint files"]}],"userModified":false,"replaceAll":false},"sourceToolAssistantUUID":"de23e674-040f-4a35-b73b-38325ef9a39e","userType":"external","entrypoint":"cli","cwd":"/Users/jan/prg/ClusterCockpit/cc-backend","sessionId":"b843de8b-f396-4eb0-83ba-fb654a2b4072","version":"2.1.80","gitBranch":"hotfix","slug":"agile-napping-otter"} +{"parentUuid":"33c9fc56-03ec-4c6e-a5e9-bcd71ff413be","isSidechain":false,"message":{"model":"claude-opus-4-6","id":"msg_01U6ysKVgx3TJ787g1fNPnfw","type":"message","role":"assistant","content":[{"type":"text","text":"Now add the summary error after the loop:"}],"stop_reason":null,"stop_sequence":null,"usage":{"input_tokens":1,"cache_creation_input_tokens":411,"cache_read_input_tokens":24142,"cache_creation":{"ephemeral_5m_input_tokens":0,"ephemeral_1h_input_tokens":411},"output_tokens":1,"service_tier":"standard","inference_geo":"not_available"}},"requestId":"req_011CZKUDTSa5gQdCwzdZZHv1","type":"assistant","uuid":"161b9a64-ebb4-4ad6-8636-4572a22b0330","timestamp":"2026-03-23T05:36:18.362Z","userType":"external","entrypoint":"cli","cwd":"/Users/jan/prg/ClusterCockpit/cc-backend","sessionId":"b843de8b-f396-4eb0-83ba-fb654a2b4072","version":"2.1.80","gitBranch":"hotfix","slug":"agile-napping-otter"} 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nil"},"caller":{"type":"direct"}}],"stop_reason":"tool_use","stop_sequence":null,"usage":{"input_tokens":1,"cache_creation_input_tokens":411,"cache_read_input_tokens":24142,"output_tokens":299,"server_tool_use":{"web_search_requests":0,"web_fetch_requests":0},"service_tier":"standard","cache_creation":{"ephemeral_1h_input_tokens":411,"ephemeral_5m_input_tokens":0},"inference_geo":"","iterations":[],"speed":"standard"}},"requestId":"req_011CZKUDTSa5gQdCwzdZZHv1","type":"assistant","uuid":"ba209e20-93a7-4642-8fe5-a4cdcc500296","timestamp":"2026-03-23T05:36:21.472Z","userType":"external","entrypoint":"cli","cwd":"/Users/jan/prg/ClusterCockpit/cc-backend","sessionId":"b843de8b-f396-4eb0-83ba-fb654a2b4072","version":"2.1.80","gitBranch":"hotfix","slug":"agile-napping-otter"} 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successfully."}]},"uuid":"6acf50b6-8504-4b25-a08f-3207621155f2","timestamp":"2026-03-23T05:36:21.479Z","toolUseResult":{"filePath":"/Users/jan/prg/ClusterCockpit/cc-backend/pkg/metricstore/archive.go","oldString":"\tcclog.Infof(\"[METRICSTORE]> archiving checkpoints completed in %s (%d files)\", time.Since(startTime).Round(time.Millisecond), totalFiles)\n\treturn totalFiles, nil","newString":"\tcclog.Infof(\"[METRICSTORE]> archiving checkpoints completed in %s (%d files)\", time.Since(startTime).Round(time.Millisecond), totalFiles)\n\n\tif len(clusterErrors) > 0 {\n\t\treturn totalFiles, fmt.Errorf(\"archiving failed for clusters: %s\", strings.Join(clusterErrors, \", \"))\n\t}\n\n\treturn totalFiles, nil","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: //.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\tvar clusterErrors []string\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\tcclog.Errorf(\"[METRICSTORE]> error reading host entries for cluster %s: %s\", cluster, err.Error())\n\t\t\tclusterErrors = append(clusterErrors, cluster)\n\t\t\tcontinue\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\tcclog.Errorf(\"[METRICSTORE]> error creating parquet writer for cluster %s: %s\", cluster, err.Error())\n\t\t\tclusterErrors = append(clusterErrors, cluster)\n\t\t\tcontinue\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\tcclog.Errorf(\"[METRICSTORE]> %d errors reading checkpoints for cluster %s\", errs, cluster)\n\t\t\tclusterErrors = append(clusterErrors, cluster)\n\t\t\tos.Remove(parquetFile)\n\t\t\tcontinue\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\tcclog.Errorf(\"[METRICSTORE]> error writing parquet archive for cluster %s: %s\", cluster, writeErr.Error())\n\t\t\tclusterErrors = append(clusterErrors, cluster)\n\t\t\tcontinue\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":332,"oldLines":5,"newStart":332,"newLines":10,"lines":[" }"," "," cclog.Infof(\"[METRICSTORE]> archiving checkpoints completed in %s (%d files)\", time.Since(startTime).Round(time.Millisecond), totalFiles)","+","+ if len(clusterErrors) > 0 {","+ return totalFiles, fmt.Errorf(\"archiving failed for clusters: %s\", strings.Join(clusterErrors, \", \"))","+ }","+"," return totalFiles, nil"," }"]}],"userModified":false,"replaceAll":false},"sourceToolAssistantUUID":"ba209e20-93a7-4642-8fe5-a4cdcc500296","userType":"external","entrypoint":"cli","cwd":"/Users/jan/prg/ClusterCockpit/cc-backend","sessionId":"b843de8b-f396-4eb0-83ba-fb654a2b4072","version":"2.1.80","gitBranch":"hotfix","slug":"agile-napping-otter"} +{"parentUuid":"6acf50b6-8504-4b25-a08f-3207621155f2","isSidechain":false,"message":{"model":"claude-opus-4-6","id":"msg_01QPvHEa6drtbQFGxJPHEpcD","type":"message","role":"assistant","content":[{"type":"text","text":"Check if `strings` is imported:"}],"stop_reason":null,"stop_sequence":null,"usage":{"input_tokens":1,"cache_creation_input_tokens":344,"cache_read_input_tokens":24553,"cache_creation":{"ephemeral_5m_input_tokens":0,"ephemeral_1h_input_tokens":344},"output_tokens":1,"service_tier":"standard","inference_geo":"not_available"}},"requestId":"req_011CZKUDzKCfoU33watJb6Mm","type":"assistant","uuid":"9ee9f364-f47d-427b-8289-9b8a1eea95ec","timestamp":"2026-03-23T05:36:24.617Z","userType":"external","entrypoint":"cli","cwd":"/Users/jan/prg/ClusterCockpit/cc-backend","sessionId":"b843de8b-f396-4eb0-83ba-fb654a2b4072","version":"2.1.80","gitBranch":"hotfix","slug":"agile-napping-otter"} +{"parentUuid":"9ee9f364-f47d-427b-8289-9b8a1eea95ec","isSidechain":false,"message":{"model":"claude-opus-4-6","id":"msg_01QPvHEa6drtbQFGxJPHEpcD","type":"message","role":"assistant","content":[{"type":"tool_use","id":"toolu_01KkoziDig8v8ybJ3JQuTZo6","name":"Read","input":{"file_path":"/Users/jan/prg/ClusterCockpit/cc-backend/pkg/metricstore/archive.go","limit":20},"caller":{"type":"direct"}}],"stop_reason":"tool_use","stop_sequence":null,"usage":{"input_tokens":1,"cache_creation_input_tokens":344,"cache_read_input_tokens":24553,"output_tokens":105,"server_tool_use":{"web_search_requests":0,"web_fetch_requests":0},"service_tier":"standard","cache_creation":{"ephemeral_1h_input_tokens":344,"ephemeral_5m_input_tokens":0},"inference_geo":"","iterations":[],"speed":"standard"}},"requestId":"req_011CZKUDzKCfoU33watJb6Mm","type":"assistant","uuid":"a331a9bf-88c1-4429-8abb-0f63a6b66670","timestamp":"2026-03-23T05:36:25.019Z","userType":"external","entrypoint":"cli","cwd":"/Users/jan/prg/ClusterCockpit/cc-backend","sessionId":"b843de8b-f396-4eb0-83ba-fb654a2b4072","version":"2.1.80","gitBranch":"hotfix","slug":"agile-napping-otter"} +{"parentUuid":"a331a9bf-88c1-4429-8abb-0f63a6b66670","isSidechain":false,"type":"progress","data":{"type":"hook_progress","hookEvent":"PostToolUse","hookName":"PostToolUse:Read","command":"callback"},"parentToolUseID":"toolu_01KkoziDig8v8ybJ3JQuTZo6","toolUseID":"toolu_01KkoziDig8v8ybJ3JQuTZo6","timestamp":"2026-03-23T05:36:25.034Z","uuid":"40dcc9cf-5f1a-4070-879b-a15113c9a547","userType":"external","entrypoint":"cli","cwd":"/Users/jan/prg/ClusterCockpit/cc-backend","sessionId":"b843de8b-f396-4eb0-83ba-fb654a2b4072","version":"2.1.80","gitBranch":"hotfix","slug":"agile-napping-otter"} +{"parentUuid":"a331a9bf-88c1-4429-8abb-0f63a6b66670","isSidechain":false,"promptId":"3ebe3ca1-e9cc-430c-81f4-2daf32faef3e","type":"user","message":{"role":"user","content":[{"tool_use_id":"toolu_01KkoziDig8v8ybJ3JQuTZo6","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→"}]},"uuid":"bc78655e-39d3-46f5-9c4e-25f14dec9a75","timestamp":"2026-03-23T05:36:25.033Z","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","numLines":20,"startLine":1,"totalLines":342}},"sourceToolAssistantUUID":"a331a9bf-88c1-4429-8abb-0f63a6b66670","userType":"external","entrypoint":"cli","cwd":"/Users/jan/prg/ClusterCockpit/cc-backend","sessionId":"b843de8b-f396-4eb0-83ba-fb654a2b4072","version":"2.1.80","gitBranch":"hotfix","slug":"agile-napping-otter"} +{"parentUuid":"bc78655e-39d3-46f5-9c4e-25f14dec9a75","isSidechain":false,"message":{"model":"claude-opus-4-6","id":"msg_01HkYUa3d8ipSuTBsA5mdVHX","type":"message","role":"assistant","content":[{"type":"text","text":"Need to add `strings` import:"}],"stop_reason":null,"stop_sequence":null,"usage":{"input_tokens":1,"cache_creation_input_tokens":383,"cache_read_input_tokens":24897,"cache_creation":{"ephemeral_5m_input_tokens":0,"ephemeral_1h_input_tokens":383},"output_tokens":1,"service_tier":"standard","inference_geo":"not_available"}},"requestId":"req_011CZKUEFLaoLk8m8947SRLQ","type":"assistant","uuid":"d8d48c54-8fd3-4725-92f4-ac83dc2db9f6","timestamp":"2026-03-23T05:36:27.559Z","userType":"external","entrypoint":"cli","cwd":"/Users/jan/prg/ClusterCockpit/cc-backend","sessionId":"b843de8b-f396-4eb0-83ba-fb654a2b4072","version":"2.1.80","gitBranch":"hotfix","slug":"agile-napping-otter"} +{"parentUuid":"d8d48c54-8fd3-4725-92f4-ac83dc2db9f6","isSidechain":false,"message":{"model":"claude-opus-4-6","id":"msg_01HkYUa3d8ipSuTBsA5mdVHX","type":"message","role":"assistant","content":[{"type":"tool_use","id":"toolu_01RtLLbC7qAFGrbeorfELwkg","name":"Edit","input":{"replace_all":false,"file_path":"/Users/jan/prg/ClusterCockpit/cc-backend/pkg/metricstore/archive.go","old_string":"\t\"os\"\n\t\"path/filepath\"\n\t\"sync\"","new_string":"\t\"os\"\n\t\"path/filepath\"\n\t\"strings\"\n\t\"sync\""},"caller":{"type":"direct"}}],"stop_reason":"tool_use","stop_sequence":null,"usage":{"input_tokens":1,"cache_creation_input_tokens":383,"cache_read_input_tokens":24897,"output_tokens":180,"server_tool_use":{"web_search_requests":0,"web_fetch_requests":0},"service_tier":"standard","cache_creation":{"ephemeral_1h_input_tokens":383,"ephemeral_5m_input_tokens":0},"inference_geo":"","iterations":[],"speed":"standard"}},"requestId":"req_011CZKUEFLaoLk8m8947SRLQ","type":"assistant","uuid":"51609e15-4b53-4bf8-b889-4bba48279870","timestamp":"2026-03-23T05:36:28.562Z","userType":"external","entrypoint":"cli","cwd":"/Users/jan/prg/ClusterCockpit/cc-backend","sessionId":"b843de8b-f396-4eb0-83ba-fb654a2b4072","version":"2.1.80","gitBranch":"hotfix","slug":"agile-napping-otter"} +{"parentUuid":"51609e15-4b53-4bf8-b889-4bba48279870","isSidechain":false,"type":"progress","data":{"type":"hook_progress","hookEvent":"PostToolUse","hookName":"PostToolUse:Edit","command":"callback"},"parentToolUseID":"toolu_01RtLLbC7qAFGrbeorfELwkg","toolUseID":"toolu_01RtLLbC7qAFGrbeorfELwkg","timestamp":"2026-03-23T05:36:28.580Z","uuid":"0c62e7d7-5697-4823-a7ab-a7af3c9515ff","userType":"external","entrypoint":"cli","cwd":"/Users/jan/prg/ClusterCockpit/cc-backend","sessionId":"b843de8b-f396-4eb0-83ba-fb654a2b4072","version":"2.1.80","gitBranch":"hotfix","slug":"agile-napping-otter"} +{"parentUuid":"51609e15-4b53-4bf8-b889-4bba48279870","isSidechain":false,"promptId":"3ebe3ca1-e9cc-430c-81f4-2daf32faef3e","type":"user","message":{"role":"user","content":[{"tool_use_id":"toolu_01RtLLbC7qAFGrbeorfELwkg","type":"tool_result","content":"The file /Users/jan/prg/ClusterCockpit/cc-backend/pkg/metricstore/archive.go has been updated successfully."}]},"uuid":"4a105e26-9d85-4b89-8a17-9eaba16dc965","timestamp":"2026-03-23T05:36:28.580Z","toolUseResult":{"filePath":"/Users/jan/prg/ClusterCockpit/cc-backend/pkg/metricstore/archive.go","oldString":"\t\"os\"\n\t\"path/filepath\"\n\t\"sync\"","newString":"\t\"os\"\n\t\"path/filepath\"\n\t\"strings\"\n\t\"sync\"","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: //.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\tvar clusterErrors []string\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\tcclog.Errorf(\"[METRICSTORE]> error reading host entries for cluster %s: %s\", cluster, err.Error())\n\t\t\tclusterErrors = append(clusterErrors, cluster)\n\t\t\tcontinue\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\tcclog.Errorf(\"[METRICSTORE]> error creating parquet writer for cluster %s: %s\", cluster, err.Error())\n\t\t\tclusterErrors = append(clusterErrors, cluster)\n\t\t\tcontinue\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\tcclog.Errorf(\"[METRICSTORE]> %d errors reading checkpoints for cluster %s\", errs, cluster)\n\t\t\tclusterErrors = append(clusterErrors, cluster)\n\t\t\tos.Remove(parquetFile)\n\t\t\tcontinue\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\tcclog.Errorf(\"[METRICSTORE]> error writing parquet archive for cluster %s: %s\", cluster, writeErr.Error())\n\t\t\tclusterErrors = append(clusterErrors, cluster)\n\t\t\tcontinue\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\n\tif len(clusterErrors) > 0 {\n\t\treturn totalFiles, fmt.Errorf(\"archiving failed for clusters: %s\", strings.Join(clusterErrors, \", \"))\n\t}\n\n\treturn totalFiles, nil\n}\n","structuredPatch":[{"oldStart":11,"oldLines":6,"newStart":11,"newLines":7,"lines":[" \"fmt\""," \"os\""," \"path/filepath\"","+ \"strings\""," \"sync\""," \"sync/atomic\""," 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Here's what was changed in `pkg/metricstore/archive.go`:\n\n1. Added `var clusterErrors []string` before the cluster loop\n2. **Line ~193** (`os.ReadDir` for hosts): log + append + `continue` instead of `return`\n3. **Line ~261** (`newParquetArchiveWriter` failure): log + append + `continue` instead of `return`\n4. **Line ~297** (worker `errs > 0`): log + append + `os.Remove` + `continue` instead of `return`\n5. **Line ~309** (`writeErr != nil`): log + append + `continue` instead of `return`\n6. 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