JuliusBrussee/caveman · error

cachebench: invalid corpus metadata

Error message

cachebench: invalid corpus metadata

What it means

Error "cachebench: invalid corpus metadata" thrown in JuliusBrussee/caveman.

Source

Thrown at cacheengine/cachebench/corpus.go:140

	SessionID    string          `json:"session_id"`
	Model        string          `json:"model"`
	Input        json.RawMessage `json:"input"`
	OutputLength int             `json:"output_length"`
	PreGap       float64         `json:"pre_gap"`
}

type hfRowWire struct {
	RowIndex int            `json:"row_idx"`
	Row      lmcacheRowWire `json:"row"`
}

// ReadAgentCorpus imports supported JSONL formats under explicit limits.
func ReadAgentCorpus(reader io.Reader, format string, metadata CorpusMetadata, limits CorpusLimits) (AgentCorpus, error) {
	if reader == nil {
		return AgentCorpus{}, errors.New("cachebench: nil corpus reader")
	}
	if !validBoundedText(metadata.Name, 512, false) || !validBoundedText(metadata.License, 256, true) || !validBoundedText(metadata.Revision, 512, true) {
		return AgentCorpus{}, errors.New("cachebench: invalid corpus metadata")
	}
	var err error
	limits, err = normalizedCorpusLimits(limits)
	if err != nil {
		return AgentCorpus{}, err
	}
	limited := &io.LimitedReader{R: reader, N: limits.MaxInputBytes + 1}
	var rows []CorpusRow
	switch format {
	case CorpusFormatLMCacheJSONL:
		rows, err = readLMCacheJSONL(limited, limits)
	case CorpusFormatHFRows:
		rows, err = readHFRows(limited, limits)
	default:
		return AgentCorpus{}, fmt.Errorf("cachebench: unsupported corpus format %q", format)
	}
	if limited.N <= 0 {
		return AgentCorpus{}, fmt.Errorf("cachebench: corpus input exceeds byte limit %d", limits.MaxInputBytes)

View on GitHub (pinned to 27d5a3981a)

Solutions

1. Provide valid corpus metadata (schema/version fields) in the corpus header.

When it happens

Trigger: Thrown at cacheengine/cachebench/corpus.go:140 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of JuliusBrussee/caveman@27d5a3981a (2026-08-15). Data as JSON: /api/errors/2aa4f6270669dfdf. Report an issue: GitHub.