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From "Eric Payne (JIRA)" <j...@apache.org>
Subject [jira] [Assigned] (YARN-7052) RM SchedulingMonitor should use HadoopExecutors when creating ScheduledExecutorService
Date Tue, 22 Aug 2017 17:49:00 GMT

     [ https://issues.apache.org/jira/browse/YARN-7052?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Eric Payne reassigned YARN-7052:
--------------------------------

    Assignee: Eric Payne

> RM SchedulingMonitor should use HadoopExecutors when creating ScheduledExecutorService
> --------------------------------------------------------------------------------------
>
>                 Key: YARN-7052
>                 URL: https://issues.apache.org/jira/browse/YARN-7052
>             Project: Hadoop YARN
>          Issue Type: Bug
>          Components: yarn
>            Reporter: Eric Payne
>            Assignee: Eric Payne
>
> In YARN-7051, we ran into a case where the preemption monitor thread hung with no indication
of why. This was because the preemption monitor is started by the {{SchedulingExecutorService}}
from {{SchedulingMonitor#serviceStart}}, and then nothing ever gets the result of the future
or allows it to throw an exception if needed.
> At least with {{HadoopExecutor}}, it will provide a {{HadoopScheduledThreadPoolExecutor}}
that logs the exception if one happens.



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