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https://issues.apache.org/jira/browse/YARN-8511?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16543683#comment-16543683
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Wangda Tan commented on YARN-8511:
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Thanks [~cheersyang],
The latest patch LGTM, +1. Will commit today if no objections. [~asuresh] /
[~kkaranasos], wanna take a look before commit?
> When AM releases a container, RM removes allocation tags before it is
> released by NM
> ------------------------------------------------------------------------------------
>
> Key: YARN-8511
> URL: https://issues.apache.org/jira/browse/YARN-8511
> Project: Hadoop YARN
> Issue Type: Bug
> Components: capacity scheduler
> Affects Versions: 3.1.0
> Reporter: Weiwei Yang
> Assignee: Weiwei Yang
> Priority: Major
> Attachments: YARN-8511.001.patch, YARN-8511.002.patch,
> YARN-8511.003.patch, YARN-8511.004.patch
>
>
> User leverages PC with allocation tags to avoid port conflicts between apps,
> we found sometimes they still get port conflicts. This is a similar issue
> like YARN-4148. Because RM immediately removes allocation tags once
> AM#allocate asks to release a container, however container on NM has some
> delay until it actually gets killed and released the port. We should let RM
> remove allocation tags AFTER NM confirms the containers are released.
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