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https://issues.apache.org/jira/browse/YARN-4983?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15254222#comment-15254222
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Li Lu commented on YARN-4983:
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Thanks [~templedf]!
bq. Some of the unit tests that trip on it are only creating disembodied
schedulers.
Did you mean the failures for the first time, or from the second patch? I'm
trying to understand with the second groups of failures, with something
complaining from the protobuf level...
> JVM and UGI metrics disappear after RM is once transitioned to standby mode
> ---------------------------------------------------------------------------
>
> Key: YARN-4983
> URL: https://issues.apache.org/jira/browse/YARN-4983
> Project: Hadoop YARN
> Issue Type: Bug
> Reporter: Li Lu
> Assignee: Li Lu
> Attachments: YARN-4983-trunk.000.patch, YARN-4983-trunk.001.patch
>
>
> When get transitioned to standby, the RM will shutdown the existing metric
> system and relaunch a new one. This will cause the jvm metrics and ugi
> metrics to miss in the new metric system.
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