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https://issues.apache.org/jira/browse/FLINK-4976?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Stephan Ewen resolved FLINK-4976.
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Resolution: Implemented
Done via resolution of the subtasks
> Add a way to abort in flight checkpoints
> ----------------------------------------
>
> Key: FLINK-4976
> URL: https://issues.apache.org/jira/browse/FLINK-4976
> Project: Flink
> Issue Type: New Feature
> Components: State Backends, Checkpointing
> Affects Versions: 1.1.3
> Reporter: Stephan Ewen
> Assignee: Stephan Ewen
> Fix For: 1.2.0, 1.1.4
>
>
> Currently, a started checkpoint alignment can only be dissolved if a newer
> checkpoint comes, or an input becomes closed.
> To cleanly signal downstream tasks that a checkpoint will not be completed,
> we need to introduce {{CancellationBarriers}} that can be injected into the
> stream and dissolve a pending stream alignment and notify the task that a
> pending checkpoint was skipped.
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