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https://issues.apache.org/jira/browse/YARN-3440?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Li Lu reassigned YARN-3440:
---------------------------
Assignee: Li Lu
> ResourceUsage should be copy-on-write
> -------------------------------------
>
> Key: YARN-3440
> URL: https://issues.apache.org/jira/browse/YARN-3440
> Project: Hadoop YARN
> Issue Type: Bug
> Components: resourcemanager, scheduler, yarn
> Reporter: Wangda Tan
> Assignee: Li Lu
>
> In {{org.apache.hadoop.yarn.server.resourcemanager.scheduler.ResourceUsage
> }}, even if it is thread-safe, but Resource returned by getters could be
> updated by another thread.
> All Resource objects in ResourceUsage should be copy-on-write, reader will
> always get a non-changed Resource. And changes apply on Resource acquired by
> caller will not affect original Resource.
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