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https://issues.apache.org/jira/browse/HDFS-16376?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=18039728#comment-18039728
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ASF GitHub Bot commented on HDFS-16376:
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github-actions[bot] closed pull request #3778: HDFS-16376. Expose metrics of
NodeNotChosenReason to JMX
URL: https://github.com/apache/hadoop/pull/3778
> Expose metrics of NodeNotChosenReason to JMX
> --------------------------------------------
>
> Key: HDFS-16376
> URL: https://issues.apache.org/jira/browse/HDFS-16376
> Project: Hadoop HDFS
> Issue Type: New Feature
> Reporter: Tao Li
> Assignee: Tao Li
> Priority: Major
> Labels: pull-request-available
> Attachments: image-2021-12-09-23-48-42-865.png,
> image-2021-12-09-23-55-29-017.png
>
> Time Spent: 1h 20m
> Remaining Estimate: 0h
>
> In our cluster, we can see logs for nodes that are not chosen. But it's hard
> to see the percentages in each reason from the logs. It is best to add
> relevant metrics to monitor the entire cluster.
> !image-2021-12-09-23-48-42-865.png|width=517,height=187!
> *JMX metrics:*
> !image-2021-12-09-23-55-29-017.png|width=620,height=152!
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