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From "Mukund Madhugiri (JIRA)" <j...@apache.org>
Subject [jira] Updated: (HADOOP-3352) Reduce the number of progress calls in the merge code
Date Sat, 07 Jun 2008 01:26:46 GMT

     [ https://issues.apache.org/jira/browse/HADOOP-3352?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Mukund Madhugiri updated HADOOP-3352:
-------------------------------------

    Fix Version/s:     (was: 0.18.0)

> Reduce the number of progress calls in the merge code
> -----------------------------------------------------
>
>                 Key: HADOOP-3352
>                 URL: https://issues.apache.org/jira/browse/HADOOP-3352
>             Project: Hadoop Core
>          Issue Type: Bug
>          Components: mapred
>            Reporter: Devaraj Das
>            Assignee: Devaraj Das
>
> The number of Progressable.progress calls in the merge code should be reduced. Specifically,
MergeQueue.lessThan has a progress call that accounts for ~8% of the CPU of a running reducer.

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