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From "Amar Kamat (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HADOOP-4670) Improve the way job history files are managed
Date Tue, 18 Nov 2008 18:25:44 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-4670?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12648690#action_12648690
] 

Amar Kamat commented on HADOOP-4670:
------------------------------------

Even I thought of having a second level categorization based on date/time. But then I thought
its better to fix/add that when needed. Currently fixing the search by _user_ should help
us over come the issue. Let me know if we should also categorize by date in this issue.

> Improve the way job history files are managed
> ---------------------------------------------
>
>                 Key: HADOOP-4670
>                 URL: https://issues.apache.org/jira/browse/HADOOP-4670
>             Project: Hadoop Core
>          Issue Type: Improvement
>          Components: mapred
>    Affects Versions: 0.20.0
>            Reporter: Amar Kamat
>            Assignee: Amar Kamat
>             Fix For: 0.20.0
>
>
> 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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