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From "Karthik Kambatla (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (MAPREDUCE-4964) JobLocalizer#localizeJobFiles can potentially write job.xml to the wrong user's directory
Date Tue, 29 Jan 2013 16:53:13 GMT

    [ https://issues.apache.org/jira/browse/MAPREDUCE-4964?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13565515#comment-13565515
] 

Karthik Kambatla commented on MAPREDUCE-4964:
---------------------------------------------

By the way, if someone can run these tests and confirm they fail locally, we can create JIRAs
for them.
                
> 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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