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https://issues.apache.org/jira/browse/FLINK-23754?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Dian Fu closed FLINK-23754.
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Resolution: Done
> Testing Python DataStream API chaining functionality
> ----------------------------------------------------
>
> Key: FLINK-23754
> URL: https://issues.apache.org/jira/browse/FLINK-23754
> Project: Flink
> Issue Type: Sub-task
> Components: API / Python
> Reporter: Dian Fu
> Assignee: Dian Fu
> Priority: Blocker
> Labels: release-testing
> Fix For: 1.14.0
>
>
> The newly introduced Python DataStream API chaining optimization allows to
> chain together multiple Python DataStream API operators to avoid
> serialization and deserialization and improving the performance.
> In order to test this new feature I recommend to follow the documentation:
> [https://ci.apache.org/projects/flink/flink-docs-master/docs/dev/python/datastream/operators/overview/#operator-chaining|https://ci.apache.org/projects/flink/flink-docs-master/docs/dev/python/datastream/intro_to_datastream_api/]
> Note that the documentation PR was just merged and so it may be still not
> available. If so, you could also take a look at the documentation PR:
> [https://github.com/apache/flink/pull/16953]
>
> The testing should cover but not limited to the following items:
> * Chaining could be enabled/disabled according to the documentation
> * Chaining works well for operators with multiple inputs / multiple outputs
> * Chaining works well in pure Python DataStream API jobs and mixing use of
> Python Table API & Python DataStream API
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