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Posted to yarn-issues@hadoop.apache.org by "lindongdong (JIRA)" <ji...@apache.org> on 2019/03/11 12:28:00 UTC
[jira] [Updated] (YARN-9376) too many ContainerIdComparator
instances are not necessary
[ https://issues.apache.org/jira/browse/YARN-9376?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
lindongdong updated YARN-9376:
------------------------------
Summary: too many ContainerIdComparator instances are not necessary (was: too many ContainerIdComparator is not necessary)
> too many ContainerIdComparator instances are not necessary
> ----------------------------------------------------------
>
> Key: YARN-9376
> URL: https://issues.apache.org/jira/browse/YARN-9376
> Project: Hadoop YARN
> Issue Type: Improvement
> Components: resourcemanager
> Affects Versions: 3.1.1, 3.1.2
> Reporter: lindongdong
> Priority: Minor
> Attachments: YARN-9376.000.patch
>
>
> One RMNodeImpl will create a new ContainerIdComparator instance, but it is not necessary.
> we may keep a static ContainerIdComparator instance and it is enough.
> org.apache.hadoop.yarn.server.resourcemanager.rmnode.RMNodeImpl#containersToClean
> {code:java}
> /* set of containers that need to be cleaned */
> private final Set<ContainerId> containersToClean = new TreeSet<ContainerId>(
> new ContainerIdComparator());
> {code}
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