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https://issues.apache.org/jira/browse/MAPREDUCE-890?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12802718#action_12802718
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Vinod K V commented on MAPREDUCE-890:
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The patch above that implements the 2nd proposal needs more changes.
bq. Set drwxrws--- on $job-dir in all cases. This means user's tasks CAN
potentially create unwarranted files/dirs in the $job_dir
With this, unwarranted files/dirs with improper permissions in job-dir will
prevent TT from recursively deleting all the files - a manifestation of
MAPREDUCE-896 in the job-dir. This should also be fixed in this patch itself.
> After HADOOP-4491, the user who started mapred system is not able to run job.
> -----------------------------------------------------------------------------
>
> Key: MAPREDUCE-890
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-890
> Project: Hadoop Map/Reduce
> Issue Type: Bug
> Components: tasktracker
> Reporter: Karam Singh
> Assignee: Vinod K V
> Priority: Blocker
> Fix For: 0.21.0
>
> Attachments: MAPREDUCE-890-20090904.txt, MAPREDUCE-890-20090909.txt
>
>
> Even setup and cleanup task of job fails due exception -: It fails to create
> job and related directories under mapred.local.dir/taskTracker/jobcache
> Directories are created as -:
> [dr-xrws--- mapred hadoop ] job_200908190916_0002
> mapred is not wrtie under this. Even manually I failed to touch file.
> mapred is use of started mr cluster
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