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https://issues.apache.org/jira/browse/FLINK-2263?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15924112#comment-15924112
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Stephan Ewen commented on FLINK-2263:
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I think this is not super critical any more, because it happens in a thread
pool that dynamically grows/shrinks. But we will get away from it soon anyways,
I think...
> ExecutionGraph uses Thread.sleep to delay execution retries
> -----------------------------------------------------------
>
> Key: FLINK-2263
> URL: https://issues.apache.org/jira/browse/FLINK-2263
> Project: Flink
> Issue Type: Bug
> Components: Distributed Coordination
> Affects Versions: 0.10.0
> Reporter: Márton Balassi
> Fix For: 1.0.0
>
>
> The delay between execution retries is done with a future containing a
> Thread.sleep call, which effectively blocks an executor. This behavior can
> potentially block the whole JobManager from the user perspective.
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