weaviate/weaviate · error

parse PERSISTENCE_LSM_MAX_SEGMENT_SIZE: %w

Error message

parse PERSISTENCE_LSM_MAX_SEGMENT_SIZE: %w

What it means

Startup configuration error: PERSISTENCE_LSM_MAX_SEGMENT_SIZE is set but cannot be parsed as a resource size string (e.g. '64MiB', '1GiB'). Malformed values like '64MBx' or bare nonsense abort FromEnv, preventing the LSM segment-size tuning from taking an unintended value.

Source

Thrown at usecases/config/environment.go:516

	// default to false (debug surface closed) only when nothing set it.
	if v, ok := os.LookupEnv("DEBUG_ENDPOINTS_ENABLED"); ok {
		config.Profiling.DebugEndpointsEnabled = configRuntime.NewDynamicValue(entcfg.Enabled(v))
	} else if config.Profiling.DebugEndpointsEnabled == nil {
		config.Profiling.DebugEndpointsEnabled = configRuntime.NewDynamicValue(false)
	}

	if !config.Authentication.AnyAuthMethodSelected() {
		config.Authentication = DefaultAuthentication
	}

	if os.Getenv("PERSISTENCE_LSM_ACCESS_STRATEGY") == "pread" {
		config.AvoidMmap = true
	}

	if v := os.Getenv("PERSISTENCE_LSM_MAX_SEGMENT_SIZE"); v != "" {
		parsed, err := parseResourceString(v)
		if err != nil {
			return fmt.Errorf("parse PERSISTENCE_LSM_MAX_SEGMENT_SIZE: %w", err)
		}

		config.Persistence.LSMMaxSegmentSize = parsed
	} else {
		config.Persistence.LSMMaxSegmentSize = DefaultPersistenceLSMMaxSegmentSize
	}

	if err := parseNonNegativeInt(
		"PERSISTENCE_LSM_SEGMENTS_CLEANUP_INTERVAL_HOURS",
		func(hours int) { config.Persistence.LSMSegmentsCleanupIntervalSeconds = hours * 3600 },
		DefaultPersistenceLSMSegmentsCleanupIntervalSeconds,
	); err != nil {
		return err
	}

	if entcfg.Enabled(os.Getenv("PERSISTENCE_LSM_SEPARATE_OBJECTS_COMPACTIONS")) {
		config.Persistence.LSMSeparateObjectsCompactions = true
	}

View on GitHub (pinned to 75aa4b6d11)

Solutions

1. Set the variable to a valid resource string such as '64MiB' or '1GiB'
2. Unset the variable to fall back to the default segment size

When it happens

Trigger: Thrown at usecases/config/environment.go:516 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of weaviate/weaviate@75aa4b6d11 (2026-09-04). Data as JSON: /api/errors/29d892582ada416b. Report an issue: GitHub.