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https://issues.apache.org/jira/browse/BEAM-9085?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17036145#comment-17036145
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Kamil Wasilewski commented on BEAM-9085:
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Thanks [~tvalentyn], great work!
I'll take a look at this in the next couple of days. I'll keep you posted on
any progress.
> Investigate performance difference between Python 2/3 on Dataflow
> -----------------------------------------------------------------
>
> Key: BEAM-9085
> URL: https://issues.apache.org/jira/browse/BEAM-9085
> Project: Beam
> Issue Type: Bug
> Components: sdk-py-core
> Reporter: Kamil Wasilewski
> Assignee: Valentyn Tymofieiev
> Priority: Major
>
> Tests show that the performance of core Beam operations in Python 3.x on
> Dataflow can be a few time slower than in Python 2.7. We should investigate
> what's the cause of the problem.
> Currently, we have one ParDo test that is run both in Py3 and Py2 [1]. A
> dashboard with runtime results can be found here [2].
> [1] sdks/python/apache_beam/testing/load_tests/pardo_test.py
> [2] https://apache-beam-testing.appspot.com/explore?dashboard=5678187241537536
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