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https://issues.apache.org/jira/browse/BEAM-1442?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16371695#comment-16371695
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Konstantinos Katsiapis commented on BEAM-1442:
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Is this now fixed (and expected to land in Beam 2.4)?
> Performance improvement of the Python DirectRunner
> --------------------------------------------------
>
> Key: BEAM-1442
> URL: https://issues.apache.org/jira/browse/BEAM-1442
> Project: Beam
> Issue Type: Improvement
> Components: sdk-py-core
> Reporter: Pablo Estrada
> Assignee: Charles Chen
> Priority: Major
> Labels: gsoc2017, mentor, python
>
> The DirectRunner for Python and Java are intended to act as policy enforcers,
> and correctness checkers for Beam pipelines; but there are users that run
> data processing tasks in them.
> Currently, the Python Direct Runner has less-than-great performance, although
> some work has gone into improving it. There are more opportunities for
> improvement.
> Skills for this project:
> * Python
> * Cython (nice to have)
> * Working through the Beam getting started materials (nice to have)
> To start figuring out this problem, it is advisable to run a simple pipeline,
> and study the `Pipeline.run` and `DirectRunner.run` methods. Ask questions
> directly on JIRA.
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