[jira] Commented: (MAPREDUCE-323) Improve the way job history files are managed

["Amar Kamat (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/MAPREDUCE-323?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12754665#action_12754665 ] 

Amar Kamat commented on MAPREDUCE-323:
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I think its high time we should get this rolling. Since the job history files can be moved to hdfs, efficient searching and jobhistory file management becomes critical. 

> Improve the way job history files are managed
> ---------------------------------------------
>
>                 Key: MAPREDUCE-323
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-323
>             Project: Hadoop Map/Reduce
>          Issue Type: Improvement
>            Reporter: Amar Kamat
>            Assignee: Amar Kamat
>
> Today all the jobhistory files are dumped in one _job-history_ folder. This can cause problems when there is a need to search the history folder (job-recovery etc). It would be nice if we group all the jobs under a _user_ folder. So all the jobs for user _amar_ will go in _history-folder/amar/_. Jobs can be categorized using various features like _jobid, date, jobname_ etc but using _username_ will make the search much more efficient and also will not result into namespace explosion. 

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