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https://issues.apache.org/jira/browse/YARN-7052?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Eric Payne updated YARN-7052:
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Description:
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.
was:
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 {{SchedulingMonigor#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.
> 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
>
> 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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