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Posted to issues@beam.apache.org by "Brian Hulette (Jira)" <ji...@apache.org> on 2020/05/27 20:35:00 UTC
[jira] [Commented] (BEAM-10054) Direct Runner execution stalls with
test pipeline
[ https://issues.apache.org/jira/browse/BEAM-10054?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17118058#comment-17118058 ]
Brian Hulette commented on BEAM-10054:
--------------------------------------
Should this block the 2.22 release?
> Direct Runner execution stalls with test pipeline
> -------------------------------------------------
>
> Key: BEAM-10054
> URL: https://issues.apache.org/jira/browse/BEAM-10054
> Project: Beam
> Issue Type: Bug
> Components: sdk-py-core
> Reporter: Maximilian Michels
> Assignee: Maximilian Michels
> Priority: P2
> Time Spent: 1.5h
> Remaining Estimate: 0h
>
> Internally, we have a test pipeline which runs with the DirectRunner. When upgrading from 2.18.0 to 2.21.0 the test failed with the following exception:
> {noformat}
> tp = Exception('Monitor task detected a pipeline stall.',), value = None, tb = None
> def raise_(tp, value=None, tb=None):
> """
> A function that matches the Python 2.x ``raise`` statement. This
> allows re-raising exceptions with the cls value and traceback on
> Python 2 and 3.
> """
> if value is not None and isinstance(tp, Exception):
> raise TypeError("instance exception may not have a separate value")
> if value is not None:
> exc = tp(value)
> else:
> exc = tp
> if exc.__traceback__ is not tb:
> raise exc.with_traceback(tb)
> > raise exc
> E Exception: Monitor task detected a pipeline stall.
> {noformat}
> I was able to bisect the error. This commit introduced the failure: https://github.com/apache/beam/commit/ea9b1f350b88c2996cafb4d24351869e82857731
> If the following conditions evaluates to False, the pipeline runs correctly: https://github.com/apache/beam/commit/ea9b1f350b88c2996cafb4d24351869e82857731#diff-2bb845e226f3a97c0f0f737d0558c5dbR1273
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