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From "Arun C Murthy (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (MAPREDUCE-1788) o.a.h.mapreduce.Job shouldn't make a copy of the JobConf
Date Fri, 16 Sep 2011 06:35:09 GMT

     [ https://issues.apache.org/jira/browse/MAPREDUCE-1788?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Arun C Murthy updated MAPREDUCE-1788:
-------------------------------------

    Attachment: MAPREDUCE-1788.patch

Turned out to be a more complicated patch.

After a brief discussion with Owen I decided to change Job/Cluster to share the same JobConf
which is copied as early as possible...

> o.a.h.mapreduce.Job shouldn't make a copy of the JobConf
> --------------------------------------------------------
>
>                 Key: MAPREDUCE-1788
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-1788
>             Project: Hadoop Map/Reduce
>          Issue Type: Bug
>          Components: client
>    Affects Versions: 0.21.0
>            Reporter: Arun C Murthy
>            Assignee: Arun C Murthy
>             Fix For: 0.23.0
>
>         Attachments: MAPREDUCE-1788.patch, MAPREDUCE-1788.patch
>
>
> Having o.a.h.mapreduce.Job make a copy of the passed in JobConf has several issues: any
modifications done by various pieces such as InputSplit etc. are not reflected back and causes
issues for frameworks built on top.

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