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https://issues.apache.org/jira/browse/HDFS-11536?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15926969#comment-15926969
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Mingliang Liu commented on HDFS-11536:
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+1 for the proposal.
> Throttle DataNode slow BlockReceiver warnings
> ---------------------------------------------
>
> Key: HDFS-11536
> URL: https://issues.apache.org/jira/browse/HDFS-11536
> Project: Hadoop HDFS
> Issue Type: Improvement
> Components: datanode
> Reporter: Xiaobing Zhou
> Assignee: Xiaobing Zhou
> Labels: 2.9.0
>
> There are a couple of warnings for every packet when peer is slow. See also
> BlockReceiver#datanodeSlowLogThresholdMs. In order to reduce verbosity,
> this proposes logging the warning per BlockReceiver in the first time,
> increasing counter, logging it again when BlockReceiver runs out of life
> cycle.
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