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ASF GitHub Bot logged work on BEAM-6733: ---------------------------------------- Author: ASF GitHub Bot Created on: 24/Sep/19 13:15 Start Date: 24/Sep/19 13:15 Worklog Time Spent: 10m Work Description: mxm commented on pull request #9652: [BEAM-6733] Use Flink's prepareSnapshotPreBarrier to replace BufferedOutputManager URL: https://github.com/apache/beam/pull/9652 For Flink version <= 1.5 the Flink Runner had to buffer any elements which are emitted during a snapshot because the barrier has already been emitted. Flink version >= 1.6 provides a hook to execute an action before the snapshot barrier is emitted by the operator. We can remove the buffering in favor of finishing the current bundle in the DoFnOperator's prepareSnapshotPreBarrier. This had previously been deferred (#7940) until removal of Flink 1.5 (#9632). 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To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. For queries about this service, please contact Infrastructure at: us...@infra.apache.org Issue Time Tracking ------------------- Worklog Id: (was: 317479) Time Spent: 2h 10m (was: 2h) > 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 > Assignee: Maximilian Michels > Priority: Minor > Time Spent: 2h 10m > 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. -- This message was sent by Atlassian Jira (v8.3.4#803005)