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https://issues.apache.org/jira/browse/MAPREDUCE-479?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12730928#action_12730928
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Jiaqi Tan commented on MAPREDUCE-479:
-------------------------------------
Tests not required because the updates were made only to logging statements and
do not affect core functionality. Manual verification was performed with a
build and hand-inspection of HTTP query string of shuffle requests and
clienttrace log messages generated by the TaskTracker.
> Add reduce ID to shuffle clienttrace
> ------------------------------------
>
> Key: MAPREDUCE-479
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-479
> Project: Hadoop Map/Reduce
> Issue Type: Improvement
> Affects Versions: 0.21.0
> Reporter: Jiaqi Tan
> Assignee: Jiaqi Tan
> Priority: Minor
> Fix For: 0.21.0
>
> Attachments: HADOOP-6013.patch, MAPREDUCE-479-1.patch,
> MAPREDUCE-479-2.patch, MAPREDUCE-479-3.patch, MAPREDUCE-479.patch
>
>
> Current clienttrace messages from shuffles note only the destination map ID
> but not the source reduce ID. Having both source and destination ID of each
> shuffle enables full tracing of execution.
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