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https://issues.apache.org/jira/browse/BEAM-3471?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16348768#comment-16348768
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Etienne Chauchot commented on BEAM-3471:
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I tested using the {{SourceRdd.close()}} method for that, but the method seems 
to not be called at least for this test 
https://github.com/apache/beam/pull/4548/files#diff-3b688d41decddb7ef75c71683c261a59

> Create a callback triggered at the end of a batch in spark runner
> -----------------------------------------------------------------
>
>                 Key: BEAM-3471
>                 URL: https://issues.apache.org/jira/browse/BEAM-3471
>             Project: Beam
>          Issue Type: Improvement
>          Components: runner-spark
>            Reporter: Etienne Chauchot
>            Assignee: Jean-Baptiste Onofré
>            Priority: Major
>
> In the future we might add new features to the runners for which we might 
> need to do some processing at the end of a batch. Currently there is not 
> unique place (a callback) to add this processing.



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