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https://issues.apache.org/jira/browse/HDFS-14927?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16964502#comment-16964502
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Íñigo Goiri commented on HDFS-14927:
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+1 on [^HDFS-14927.009.patch].
> RBF: Add metrics for async callers thread pool
> ----------------------------------------------
>
> Key: HDFS-14927
> URL: https://issues.apache.org/jira/browse/HDFS-14927
> Project: Hadoop HDFS
> Issue Type: Improvement
> Components: rbf
> Reporter: Leon Gao
> Assignee: Leon Gao
> Priority: Minor
> Attachments: HDFS-14927.001.patch, HDFS-14927.002.patch,
> HDFS-14927.003.patch, HDFS-14927.004.patch, HDFS-14927.005.patch,
> HDFS-14927.006.patch, HDFS-14927.007.patch, HDFS-14927.008.patch,
> HDFS-14927.009.patch
>
>
> It is good to add some monitoring on the async caller thread pool to handle
> fan-out RPC client requests, so we know the utilization and when to bump up
> dfs.federation.router.client.thread-size
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