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https://issues.apache.org/jira/browse/BEAM-6733?focusedWorklogId=203813&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-203813
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ASF GitHub Bot logged work on BEAM-6733:
----------------------------------------

                Author: ASF GitHub Bot
            Created on: 25/Feb/19 18:08
            Start Date: 25/Feb/19 18:08
    Worklog Time Spent: 10m 
      Work Description: mxm commented on issue #7940: [BEAM-6733] Use Flink 
1.6/1.7 prepareSnapshotPreBarrier to replace BufferedOutputManager
URL: https://github.com/apache/beam/pull/7940#issuecomment-467115881
 
 
   Note that we could get rid of `FlinkSplitStateInternals` and 
`FlinkSplitStateInternalsTest` entirely for Flink >= 1.6.
 
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Issue Time Tracking
-------------------

    Worklog Id:     (was: 203813)
    Time Spent: 1h  (was: 50m)

> 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: 1h
>  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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