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fix: Unbound growth of wal files in case of checkpointing error

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Entire-Checkpoint: 95a89a7127c5
This commit is contained in:
Jan Eitzinger
2026-03-28 06:26:21 +01:00
parent ac0a4cc39a
commit cc3d03bb5b
5 changed files with 56 additions and 9 deletions
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7
pkg/metricstore/config.go
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@@ -59,11 +59,14 @@ const (
// Checkpoints configures periodic persistence of in-memory metric data.
//
// Fields:
// - FileFormat: "json" (human-readable, periodic) or "wal" (binary snapshot + WAL, crash-safe); default is "wal"
// - RootDir: Filesystem path for checkpoint files (created if missing)
// - FileFormat: "json" (human-readable, periodic) or "wal" (binary snapshot + WAL, crash-safe); default is "wal"
// - RootDir: Filesystem path for checkpoint files (created if missing)
// - MaxWALSize: Maximum size in bytes for a single host's WAL file; 0 = unlimited (default).
// When exceeded the WAL is force-rotated to prevent unbounded disk growth.
type Checkpoints struct {
FileFormat string `json:"file-format"`
RootDir string `json:"directory"`
MaxWALSize int64 `json:"max-wal-size,omitempty"`
}
// Debug provides development and profiling options.