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https://issues.apache.org/jira/browse/FLINK-38812?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=18053481#comment-18053481
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Liu commented on FLINK-38812:
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[~dianfu] Have a look? Thanks.
> Log PYFLINK_CYTHON_ENABLED to show whether cython optimization is enabled
> -------------------------------------------------------------------------
>
> Key: FLINK-38812
> URL: https://issues.apache.org/jira/browse/FLINK-38812
> Project: Flink
> Issue Type: Improvement
> Components: API / Python
> Reporter: Liu
> Priority: Major
>
> It is hard to know whether cython optimization is enabled when job's
> performance is slow. We should add logs to show detail infos for profiling.
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