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https://issues.apache.org/jira/browse/FLINK-2519?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Stephan Ewen closed FLINK-2519.
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> BarrierBuffers get stuck infinitely when some inputs end early
> --------------------------------------------------------------
>
> Key: FLINK-2519
> URL: https://issues.apache.org/jira/browse/FLINK-2519
> Project: Flink
> Issue Type: Bug
> Components: Streaming
> Affects Versions: 0.10
> Reporter: Stephan Ewen
> Assignee: Stephan Ewen
> Priority: Blocker
> Fix For: 0.10
>
>
> When some sources exit early, the barrier buffer may start an alignment, but
> will never complete it, because some inputs never deliver a checkpoint
> barrier.
> [FLINK-2515] mitigates most of the problem, by not starting checkpoints any
> more when some sources already finished. When a checkpoint is started while a
> source is finishing, the barrier buffer may still align infinitely.
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