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https://issues.apache.org/jira/browse/HBASE-26809?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17598687#comment-17598687
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Duo Zhang commented on HBASE-26809:
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The PR for master branch has been merged. Please open the PR for branch-2.x?
Thanks.
> Report client backoff time for server overloaded in ConnectionMetrics
> ---------------------------------------------------------------------
>
> Key: HBASE-26809
> URL: https://issues.apache.org/jira/browse/HBASE-26809
> Project: HBase
> Issue Type: New Feature
> Reporter: Bryan Beaudreault
> Assignee: Briana Augenreich
> Priority: Major
> Labels: patch-available
>
> Servers can throw CallQueueTooBigException and CallDroppedException when
> overloaded. As of HBASE-26807, these can have a configurable extra backoff to
> allow the server to recover. Depending on the server side queue
> implementation, different callers may be more or less impacted by server
> load. It is very useful to measure in the client how much time is spent
> backing off so we can see which clients are most affected by server overload.
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