temporalio/temporal · error · DeserializationError

unable to deserialize memo from data blob: %w

Error message

unable to deserialize memo from data blob: %w

What it means

Error "unable to deserialize memo from data blob: %w" thrown in temporalio/temporal.

Source

Thrown at common/persistence/visibility/visibility_manager_impl.go:550

	if !executionInfo.ExecutionTime.AsTime().After(time.Unix(0, 0)) {
		executionInfo.ExecutionTime = timestamppb.New(internalExecution.StartTime)
	}

	return executionInfo, nil
}

func deserializeMemo(data *commonpb.DataBlob) (*commonpb.Memo, error) {
	if data == nil || len(data.Data) == 0 {
		return &commonpb.Memo{}, nil
	}

	switch data.EncodingType {
	case enumspb.ENCODING_TYPE_PROTO3:
		memo := &commonpb.Memo{}
		err := proto.Unmarshal(data.Data, memo)
		if err != nil {
			return nil, serialization.NewDeserializationError(
				enumspb.ENCODING_TYPE_PROTO3, fmt.Errorf("unable to deserialize memo from data blob: %w", err))
		}
		return memo, nil
	default:
		return nil, serialization.NewUnknownEncodingTypeError(data.GetEncodingType().String(), enumspb.ENCODING_TYPE_PROTO3)
	}
}

func serializeMemo(memo *commonpb.Memo) (*commonpb.DataBlob, error) {
	if memo == nil {
		memo = &commonpb.Memo{}
	}

	data, err := proto.Marshal(memo)
	if err != nil {
		return nil, serviceerror.NewInternalf("Unable to serialize memo to data blob: %v", err)
	}

	return &commonpb.DataBlob{

View on GitHub (pinned to bde624efd1)

When it happens

Trigger: Thrown at common/persistence/visibility/visibility_manager_impl.go:550 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of temporalio/temporal@bde624efd1 (2026-09-01). Data as JSON: /api/errors/6c2e91f833780825. Report an issue: GitHub.