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https://issues.apache.org/jira/browse/SPARK-2147?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Aaron Davidson resolved SPARK-2147.
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Resolution: Fixed
https://github.com/apache/spark/pull/1102
> Master UI forgets about Executors when application exits cleanly
> ----------------------------------------------------------------
>
> Key: SPARK-2147
> URL: https://issues.apache.org/jira/browse/SPARK-2147
> Project: Spark
> Issue Type: Bug
> Components: Web UI
> Affects Versions: 1.0.0
> Reporter: Aaron Davidson
> Assignee: Andrew Or
>
> When an application exits cleanly, the Master will remove all executors from
> the application's ApplicationInfo, causing the historic "Completed
> Applications" page to report that there were no executors associated with
> that application.
> On the contrary, if the application exits uncleanly, then the Master will
> remove the application FIRST, and will not actually remove the executors from
> the ApplicationInfo page. This causes the executors to show up correctly in
> the "Completed Applications" page.
> The correct behavior would probably be to gather a history of all executors
> (so we'd retain executors that we had at one point but were removed during
> the job), and not remove lost executors.
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