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https://issues.apache.org/jira/browse/FLINK-18235?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17327782#comment-17327782
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Flink Jira Bot commented on FLINK-18235:
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This major issue is unassigned and itself and all of its Sub-Tasks have not
been updated for 30 days. So, it has been labeled "stale-major". If this ticket
is indeed "major", please either assign yourself or give an update. Afterwards,
please remove the label. In 7 days the issue will be deprioritized.
> Improve the checkpoint strategy for Python UDF execution
> --------------------------------------------------------
>
> Key: FLINK-18235
> URL: https://issues.apache.org/jira/browse/FLINK-18235
> Project: Flink
> Issue Type: Improvement
> Components: API / Python
> Reporter: Dian Fu
> Priority: Major
> Labels: stale-major
> Fix For: 1.13.0
>
>
> Currently, when a checkpoint is triggered for the Python operator, all the
> data buffered will be flushed to the Python worker to be processed. This will
> increase the overall checkpoint time in case there are a lot of elements
> buffered and Python UDF is slow. We should improve the checkpoint strategy to
> improve this, e.g. buffering the data into state instead of flushing them
> out. We can also let users to config the checkpoint strategy if needed.
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