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https://issues.apache.org/jira/browse/HDFS-13053?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16336299#comment-16336299
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Hanisha Koneru commented on HDFS-13053:
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Hi [~elgoiri] and [~pulkitmisra],
Similar work was done in HDFS-10917 and -HDFS-11194-. Peer latency stats are
collected during Datanode write pipeline and exposed via metrics. And Namenode
detects slow DNs based on these peer stats.
> Track time to process packet in Datanode
> ----------------------------------------
>
> Key: HDFS-13053
> URL: https://issues.apache.org/jira/browse/HDFS-13053
> Project: Hadoop HDFS
> Issue Type: Improvement
> Components: datanode
> Reporter: Íñigo Goiri
> Assignee: Pulkit Misra
> Priority: Minor
> Attachments: HDFS-13053.000.patch
>
>
> We should track the time that each datanode takes to process a packet.
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