hashicorp/nomad · error

failed to encode response: %v

Error message

failed to encode response: %v

What it means

Error "failed to encode response: %v" thrown in hashicorp/nomad.

Source

Thrown at nomad/operator_endpoint.go:618

	} else if !aclObj.AllowOperatorOperation(acl.OperatorCapabilitySnapshotSave) {
		handleFailure(403, structs.ErrPermissionDenied)
		return
	}

	op.srv.setQueryMeta(&reply.QueryMeta)

	// Take the snapshot and capture the index.
	snap, err := snapshot.New(op.logger.Named("snapshot"), op.srv.raft)
	reply.SnapshotChecksum = snap.Checksum()
	reply.Index = snap.Index()
	if err != nil {
		handleFailure(500, err)
		return
	}
	defer snap.Close()

	if err := encoder.Encode(&reply); err != nil {
		handleFailure(500, fmt.Errorf("failed to encode response: %v", err))
		return
	}
	if snap != nil {
		if _, err := io.Copy(conn, snap); err != nil {
			handleFailure(500, fmt.Errorf("failed to stream snapshot: %v", err))
		}
	}
}

func (op *Operator) snapshotRestore(conn io.ReadWriteCloser) {
	defer conn.Close()

	var args structs.SnapshotRestoreRequest
	var reply structs.SnapshotRestoreResponse
	decoder := codec.NewDecoder(conn, structs.MsgpackHandle)
	encoder := codec.NewEncoder(conn, structs.MsgpackHandle)

	handleFailure := func(code int, err error) {

View on GitHub (pinned to 482b49bf1a)

When it happens

Trigger: Thrown at nomad/operator_endpoint.go:618 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of hashicorp/nomad@482b49bf1a (2026-09-04). Data as JSON: /api/errors/f288db031468956b. Report an issue: GitHub.