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From "Chris Douglas (JIRA)" <j...@apache.org>
Subject [jira] Resolved: (HADOOP-4015) Need counters for spils and merges in mappers and reducers.
Date Tue, 02 Sep 2008 11:39:44 GMT

     [ https://issues.apache.org/jira/browse/HADOOP-4015?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Chris Douglas resolved HADOOP-4015.
-----------------------------------

    Resolution: Duplicate

This looks like a duplicate of HADOOP-2774

> Need counters for spils and merges in mappers and reducers.
> -----------------------------------------------------------
>
>                 Key: HADOOP-4015
>                 URL: https://issues.apache.org/jira/browse/HADOOP-4015
>             Project: Hadoop Core
>          Issue Type: Bug
>          Components: mapred
>            Reporter: Runping Qi
>
> Currently, it is hard to know whether a mapper did spills and how many if it did.
> It is even harder to figure out how many merges happened in a mapper or a reducer.
> Those data should be made available through counters.

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