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https://issues.apache.org/jira/browse/FLINK-18063?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Zhijiang updated FLINK-18063:
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    Summary: Fix the race condition for aborting current checkpoint in 
CheckpointBarrierUnaligner  (was: Fix the race condition for aborting current 
checkpoint in CheckpointBarrierUnaligner#processEndOfPartition)

> Fix the race condition for aborting current checkpoint in 
> CheckpointBarrierUnaligner
> ------------------------------------------------------------------------------------
>
>                 Key: FLINK-18063
>                 URL: https://issues.apache.org/jira/browse/FLINK-18063
>             Project: Flink
>          Issue Type: Bug
>          Components: Runtime / Checkpointing
>    Affects Versions: 1.11.0
>            Reporter: Zhijiang
>            Assignee: Zhijiang
>            Priority: Blocker
>              Labels: pull-request-available
>             Fix For: 1.11.0, 1.12.0
>
>
> There are three aborting scenarios which might encounter race condition:
>     1. CheckpointBarrierUnaligner#processCancellationBarrier
>     2. CheckpointBarrierUnaligner#processEndOfPartition
>     3. AlternatingCheckpointBarrierHandler#processBarrier
> We only consider the pending checkpoint triggered by #processBarrier from 
> task thread to abort it. Actually the checkpoint might also be triggered by 
> #notifyBarrierReceived from netty thread in race condition, so we should also 
> handle properly to abort it.



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