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https://issues.apache.org/jira/browse/MAPREDUCE-7146?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Jason Lowe moved YARN-8832 to MAPREDUCE-7146:
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Affects Version/s: (was: 3.2.0)
3.2.0
Component/s: (was: applications)
mr-am
Key: MAPREDUCE-7146 (was: YARN-8832)
Project: Hadoop Map/Reduce (was: Hadoop YARN)
> Review of RMCommunicator Class
> ------------------------------
>
> Key: MAPREDUCE-7146
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-7146
> Project: Hadoop Map/Reduce
> Issue Type: Improvement
> Components: mr-am
> Affects Versions: 3.2.0
> Reporter: BELUGA BEHR
> Assignee: BELUGA BEHR
> Priority: Minor
> Attachments: YARN-88321.patch
>
>
> Various improvements to the {{RMCommunicator}} class.
>
> * Use SLF4J parameterized logging
> * Use switch statement instead of {{if}}-{{else statements}}
> * Remove anti-pattern of "log and throw" (just throw)
> * Use a flag to stop thread instead of an interrupt (it may be interrupting
> the heartbeat code and not the thread loop)
> * The main thread loops performs loops on the heartbeat callback queue until
> the queue is empty. It's technically possible that other threads could
> constantly put new callbacks into the queue and therefore the main thread
> never progresses past the callbacks. Put a cap on the number of callbacks
> that will be processed in any iteration.
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