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fix(pubsub): retry GOAWAY errors #4313

merged 7 commits into from Jun 29, 2021


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@hongalex hongalex commented Jun 24, 2021

The frontend server for Pub/Sub might occasionally emit GOAWAY errors which are currently not retried. This is not unique to the Go client, though the categorization as UNKNOWN vs UNVAILABLE is a golang-GRPC issue. Although UNKNOWN should not generally be retried, this will unblock users of Receive until the grpc library can be changed. See internal cl/377393940 for a similar fix in another Go library.

Fixes #4257.

tmdiep approved these changes Jun 29, 2021
@@ -62,6 +62,14 @@ func (r *defaultRetryer) Retry(err error) (pause time.Duration, shouldRetry bool
return, true
return 0, false
case codes.Unknown:
// Retry GOAWAY, see
isGoaway := strings.Contains(s.Message(), "closing error reading from server: EOF") &&
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@tmdiep tmdiep Jun 29, 2021

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Just checking: does the error message contain exactly "closing error reading from server..."? I looked at the linked issue and that phrase isn't prefixed by "closing", so it may not match.


@gcf-merge-on-green gcf-merge-on-green bot merged commit 7076fef into googleapis:master Jun 29, 2021
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@hongalex hongalex deleted the fix-pubsub-goaway branch Jul 7, 2021
gcf-merge-on-green bot pushed a commit that referenced this issue Jul 7, 2021
The previous iteration of this PR, #4313, only retried GOAWAY in conjunction with an EOF string, which doesn't capture all GOAWAY errors. Now, all error messages with `GOAWAY` and error code `UNKNOWN` are retried.

Fixes #4257
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3 participants