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https://issues.apache.org/jira/browse/YARN-209?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Zhijie Shen reassigned YARN-209:
--------------------------------
Assignee: Zhijie Shen (was: Bikas Saha)
> Capacity scheduler can leave application in pending state
> ---------------------------------------------------------
>
> Key: YARN-209
> URL: https://issues.apache.org/jira/browse/YARN-209
> Project: Hadoop YARN
> Issue Type: Bug
> Reporter: Bikas Saha
> Assignee: Zhijie Shen
> Fix For: 3.0.0
>
> Attachments: YARN-209.1.patch, YARN-209-test.patch
>
>
> Say application A is submitted but at that time it does not meet the bar for
> activation because of resource limit settings for applications. After that if
> more hardware is added to the system and the application becomes valid it
> still remains in pending state, likely forever.
> This might be rare to hit in real life because enough NM's heartbeat to the
> RM before applications can get submitted. But a change in settings or
> heartbeat interval might make it easier to repro. In RM restart scenarios,
> this will likely hit more if its implemented by re-playing events and
> re-submitting applications to the scheduler before the RPC to NM's is
> activated.
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