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Posted to mapreduce-issues@hadoop.apache.org by "Allen Wittenauer (JIRA)" <ji...@apache.org> on 2014/07/17 20:11:04 UTC

[jira] [Commented] (MAPREDUCE-272) Job tracker should report the number of splits that are local to some task trackers

    [ https://issues.apache.org/jira/browse/MAPREDUCE-272?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14065261#comment-14065261 ] 

Allen Wittenauer commented on MAPREDUCE-272:
--------------------------------------------

Don't we essentially have this information logged now?  Or am I missing something here?

> Job tracker should report the number of splits that are local to some task trackers
> -----------------------------------------------------------------------------------
>
>                 Key: MAPREDUCE-272
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-272
>             Project: Hadoop Map/Reduce
>          Issue Type: Improvement
>            Reporter: Runping Qi
>            Assignee: Runping Qi
>         Attachments: hadoop-2015.txt
>
>
> Right now, jon tracker keeps track the number of launched mappers with local data.
> However, it is not clear how many mappers that are potentially be launched with data locality.
> This information is readily available in Job Tracker. It is just a matter to create a separate global  counter 
> and set it at the Job Tracker initialization time.



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