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From "Arun C Murthy (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HADOOP-4845) Shuffle counter issues
Date Fri, 12 Dec 2008 03:08:46 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-4845?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12655871#action_12655871
] 

Arun C Murthy commented on HADOOP-4845:
---------------------------------------

bq.  I guess what Arun C Murthy said is to remove the bytesTransferred variable.

Yes. Equivalently, we could just increment the counter in fetchOutputs rather than have a
member 'reduceInputBytes'.

> Shuffle counter issues
> ----------------------
>
>                 Key: HADOOP-4845
>                 URL: https://issues.apache.org/jira/browse/HADOOP-4845
>             Project: Hadoop Core
>          Issue Type: Bug
>          Components: mapred
>    Affects Versions: 0.20.0
>            Reporter: Chris Douglas
>             Fix For: 0.20.0
>
>
> HADOOP-4749 added a new counter tracking the bytes shuffled into the reduce. It adds
an accumulator to ReduceCopier instead of simply incrementing the new counter and did not
define a human-readable value in src/mapred/org/apache/hadoop/mapred/Task_Counter.properties.

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