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https://issues.apache.org/jira/browse/BEAM-5069?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16570749#comment-16570749
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Valentyn Tymofieiev commented on BEAM-5069:
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Fix has been CP'ed in the release: https://github.com/apache/beam/pull/6138
> Incorrect string type check in _OutputProcessor.process_outputs.
> ----------------------------------------------------------------
>
> Key: BEAM-5069
> URL: https://issues.apache.org/jira/browse/BEAM-5069
> Project: Beam
> Issue Type: Bug
> Components: sdk-py-core
> Reporter: Valentyn Tymofieiev
> Assignee: Valentyn Tymofieiev
> Priority: Blocker
>
> Due to _# cython: language_level=3_ directive in
> [common.py|https://github.com/apache/beam/blob/8f1d86ea7bd5b118bc7e638d4d484445101526a1/sdks/python/apache_beam/runners/common.py#L18],
> the type check in
> [common.py|https://github.com/apache/beam/blob/8f1d86ea7bd5b118bc7e638d4d484445101526a1/sdks/python/apache_beam/runners/common.py#L729]
> does not recognize Python 2 strings, which have type 'bytes'.
> This causes pipelines to crash when this codepath is executed in Cythonized
> version of the SDK.
> The regression happened during ongoing efforts to make Beam codebase Python 3
> compatible.
> The fix will need to be cherry-picked into the 2.6.0 release.
> Working on the fix.
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