yarpcerrors not mapped to Cadence errors in Go client?

[rkumpf]

Using the Go client (versions 0.18.5 and 0.19.1), a call to Client.DescribeWorkflowExecution for a non-existent workflow ID has a one minute delay before returning a CodeNotFound error.

The delay is caused by retries that should have been avoided by this code in the isServiceTransientError function (https://github.com/uber-go/cadence-client/blob/master/internal/internal_retry.go#L92-L94)

	if target := (*s.EntityNotExistsError)(nil); errors.As(err, &target) {
		return false
	}

The delay is avoided when the isServiceTransientError function is updated to include:

	if status := yarpcerrors.FromError(err); status != nil && status.Code() == yarpcerrors.CodeNotFound {
		return false
	}

Maybe this is a symptom of a general problem where errors returned via Thrift are not mapped correctly to Cadence errors.

Is my understanding correct? Is there any way to avoid a delay in the EntityNotExistsError case without short-circuiting retries for real transient errors?