t8y2/dbx · error

service: %w

Error message

service: %w

What it means

This error means the service field of the Hadoop delegation token could not be read as the fourth length-prefixed field. This is the final required field; a failure here indicates a truncated or structurally invalid token even though identifier, password, and kind parsed.

Source

Thrown at agents/drivers/hive-go/config.go:793

		return nil, nil, decodeErr
	}
	reader := strings.NewReader(string(decoded))
	identifier, err := readHadoopByteArray(reader)
	if err != nil {
		return nil, nil, fmt.Errorf("identifier: %w", err)
	}
	password, err := readHadoopByteArray(reader)
	if err != nil {
		return nil, nil, fmt.Errorf("password: %w", err)
	}
	if len(identifier) == 0 || len(password) == 0 {
		return nil, nil, errors.New("token identifier and password must be non-empty")
	}
	if _, err := readHadoopByteArray(reader); err != nil {
		return nil, nil, fmt.Errorf("kind: %w", err)
	}
	if _, err := readHadoopByteArray(reader); err != nil {
		return nil, nil, fmt.Errorf("service: %w", err)
	}
	if reader.Len() != 0 {
		return nil, nil, errors.New("token contains trailing data")
	}
	return identifier, password, nil
}

func readHadoopByteArray(reader io.ByteReader) ([]byte, error) {
	length, err := readHadoopVInt(reader)
	if err != nil {
		return nil, err
	}
	if length < 0 {
		return nil, fmt.Errorf("negative length %d", length)
	}
	if length > 64*1024*1024 {
		return nil, fmt.Errorf("length %d exceeds limit", length)
	}

View on GitHub (pinned to c0390bff16)

Solutions

1. Re-acquire the token from the Hive server and pass it unmodified
2. Ensure no transport layer (logs, YAML, base64 re-wrapping) altered the token bytes
3. Test the token with decodeHadoopDelegationToken-equivalent parsing before deployment

if err != nil && strings.Contains(err.Error(), "service:") {
	return fmt.Errorf("token payload incomplete: %w", err)
}

When it happens

Trigger: A delegation token payload ending after the kind field, or a corrupt VInt length prefix at the service field position.

Common situations: Truncated tokens from copy/paste; tokens serialized by a different Hadoop RPC version; corrupted secrets in transit.

Related errors

• token identifier and password must be non-empty
• token contains trailing data
• identifier: %w
• password: %w
• kind: %w

AI-assisted analysis of t8y2/dbx@c0390bff16 (2026-09-05). Data as JSON: /api/errors/1a7bd17037f6cb18. Report an issue: GitHub.