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https://issues.apache.org/jira/browse/BEAM-6650?focusedWorklogId=197143&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-197143
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ASF GitHub Bot logged work on BEAM-6650:
----------------------------------------
Author: ASF GitHub Bot
Created on: 11/Feb/19 20:22
Start Date: 11/Feb/19 20:22
Worklog Time Spent: 10m
Work Description: mxm commented on pull request #7810: [BEAM-6650] Add
bundle test with checkpointing for keyed processing
URL: https://github.com/apache/beam/pull/7810
The checkpointing does not work correctly when FlinkKeyGroupStateInternals
are used, i.e. when the DoFn uses keyed KV input. Any elements emitted during
finalizeBundle() will not be checkpointed.
The test demonstrates the desired behavior. Trying to fix this across Flink
1.5 - 1.7 is a bit tricky due to the different way the timer state is treated.
The fix in `DoFnOperator` only works for 1.5.
@aljoscha Perhaps you can give some input on this? Couldn't we use Flink's
keyed operator state for the buffer output?
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Post-Commit Tests Status (on master branch)
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| [](https://builds.apache.org/job/beam_PostCommit_Java_ValidatesRunner_Flink/lastCompletedBuild/)<br>[](https://builds.apache.org/job/beam_PostCommit_Java_PVR_Flink_Batch/lastCompletedBuild/)<br>[](https://builds.apache.org/job/beam_PostCommit_Java_PVR_Flink_Streaming/lastCompletedBuild/)
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Issue Time Tracking
-------------------
Worklog Id: (was: 197143)
Time Spent: 10m
Remaining Estimate: 0h
> FlinkRunner fails to checkpoint elements emitted during finishBundle
> --------------------------------------------------------------------
>
> Key: BEAM-6650
> URL: https://issues.apache.org/jira/browse/BEAM-6650
> Project: Beam
> Issue Type: Bug
> Components: runner-flink
> Reporter: Maximilian Michels
> Assignee: Maximilian Michels
> Priority: Major
> Fix For: 2.11.0
>
> Time Spent: 10m
> Remaining Estimate: 0h
>
> Elements emitted during the finalizeBundle call in snapshopState are lost
> after the pipeline is restored. This only happens when the operator is keyed.
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