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https://issues.apache.org/jira/browse/BEAM-6733?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Kenneth Knowles updated BEAM-6733:
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This Jira ticket has a pull request attached to it, but is still open. Did the
pull request resolve the issue? If so, could you please mark it resolved? This
will help the project have a clear view of its open issues.
> Use Flink 1.6/1.7 prepareSnapshotPreBarrier to replace BufferedOutputManager
> ----------------------------------------------------------------------------
>
> Key: BEAM-6733
> URL: https://issues.apache.org/jira/browse/BEAM-6733
> Project: Beam
> Issue Type: Improvement
> Components: runner-flink
> Reporter: Maximilian Michels
> Priority: P3
> Time Spent: 5h
> Remaining Estimate: 0h
>
> Flink 1.6/1.7 provides a hook to execute an action before the snapshot
> barrier is emitted by the operator. At the moment (<=1.5) the Flink Runner
> has to buffer any elements which are emitted during a snapshot because the
> barrier has already been emitted. This leads to a lot of code complexity.
> We can remove the buffering in favor of finishing the current bundle in
> {{DoFnOperator}}'s {{prepareSnapshotPreBarrier}}. The 1.5/1.6/1.7 build setup
> poses a challenge to do that in a way that does not lead to much code
> duplication.
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