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https://issues.apache.org/jira/browse/HDFS-13053?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16339716#comment-16339716
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Hanisha Koneru commented on HDFS-13053:
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Say the DN write pipeline is {{Client->DN1->DN2->DN3.}} IIUC, the packet
processing time at {{DN2}} would include write latency of forwarding the packet
to {{DN3}} also. And say {{DN3}} was slow in accepting packets. Then the
reported processing time of DN2 would be skewed. Please correct me if I am
wrong.
> 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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