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https://issues.apache.org/jira/browse/HADOOP-2581?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12558101#action_12558101
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Owen O'Malley commented on HADOOP-2581:
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The counters *are* logged in job history, as of HADOOP-1210.
> Counters and other useful stats should be logged into Job History log
> ---------------------------------------------------------------------
>
> Key: HADOOP-2581
> URL: https://issues.apache.org/jira/browse/HADOOP-2581
> Project: Hadoop
> Issue Type: Improvement
> Components: mapred
> Reporter: Runping Qi
>
> The following stats are useful and available to JT but not logged job
> history log:
> 1. The counters of each job
> 2. The counters of each mapper/reducer attempt
> 3. The info about the input splits (filename, split size, on which nodes)
> 3. The input split for each mapper attempt
> Those data is useful and important for mining to find out performance related
> problems.
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