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From "Arun C Murthy (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (MAPREDUCE-4964) JobLocalizer#localizeJobFiles can potentially write job.xml to the wrong user's directory
Date Mon, 28 Jan 2013 22:33:14 GMT

    [ https://issues.apache.org/jira/browse/MAPREDUCE-4964?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13564772#comment-13564772
] 

Arun C Murthy commented on MAPREDUCE-4964:
------------------------------------------

Reviewing the patch...
                
> JobLocalizer#localizeJobFiles can potentially write job.xml to the wrong user's directory
> -----------------------------------------------------------------------------------------
>
>                 Key: MAPREDUCE-4964
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-4964
>             Project: Hadoop Map/Reduce
>          Issue Type: Bug
>          Components: mrv1
>    Affects Versions: 1.1.1
>            Reporter: Karthik Kambatla
>            Assignee: Karthik Kambatla
>         Attachments: MR-4964.patch, MR-4964.patch
>
>
> In the following code, if jobs corresponding to different users (X and Y) are localized
simultaneously, it is possible that jobconf can be written to the wrong user's directory.
(X's job.xml can be written to Y's directory)
> {code}
>   public void localizeJobFiles(JobID jobid, JobConf jConf,
>       Path localJobTokenFile, TaskUmbilicalProtocol taskTracker)
>       throws IOException, InterruptedException {
>     localizeJobFiles(jobid, jConf,
>         lDirAlloc.getLocalPathForWrite(JOBCONF, ttConf), localJobTokenFile,
>         taskTracker);
>   }
> {code}

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