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From "Chris Douglas (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (MAPREDUCE-6958) Shuffle audit logger should log size of shuffle transfer
Date Mon, 18 Sep 2017 18:51:00 GMT

    [ https://issues.apache.org/jira/browse/MAPREDUCE-6958?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16170487#comment-16170487
] 

Chris Douglas commented on MAPREDUCE-6958:
------------------------------------------

Thanks for updating the patch, [~jlowe]. +1

> Shuffle audit logger should log size of shuffle transfer
> --------------------------------------------------------
>
>                 Key: MAPREDUCE-6958
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-6958
>             Project: Hadoop Map/Reduce
>          Issue Type: Improvement
>            Reporter: Jason Lowe
>            Assignee: Jason Lowe
>            Priority: Minor
>         Attachments: MAPREDUCE-6958.001.patch, MAPREDUCE-6958.002.patch, MAPREDUCE-6958.003.patch
>
>
> The shuffle audit logger currently logs the job ID and reducer ID but nothing about the
size of the requested transfer.  It calculates this as part of the HTTP response headers,
so it would be trivial to log the response size.  This would be very valuable for debugging
network traffic storms from the shuffle handler.



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