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https://issues.apache.org/jira/browse/HDFS-17314?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17801519#comment-17801519
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ASF GitHub Bot commented on HDFS-17314:
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hfutatzhanghb opened a new pull request, #6398:
URL: https://github.com/apache/hadoop/pull/6398
### Description of PR
When we enable congestion backoff, we should better know how many times
datanodes have told client backoff. This metrics can help us know better about
congestion function.
### How was this patch tested?
Add an UT
> Add a metrics to record congestion backoff counts.
> --------------------------------------------------
>
> Key: HDFS-17314
> URL: https://issues.apache.org/jira/browse/HDFS-17314
> Project: Hadoop HDFS
> Issue Type: Improvement
> Components: datanode
> Affects Versions: 3.3.6
> Reporter: farmmamba
> Assignee: farmmamba
> Priority: Major
>
> When we enable congestion backoff, we should better know how many times
> datanodes have told client backoff. This metrics can help us know better
> about congestion function.
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