[
https://issues.apache.org/jira/browse/MAPREDUCE-1422?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Amar Kamat updated MAPREDUCE-1422:
----------------------------------
Attachment: mapreduce-1422-test-v1.0.patch
Attaching an example test-job that can be run on a cluster to verify the fix.
Here are the steps to verify :
1) _Reproduce the bug_
{code}
1) Apply this patch.
2) Deploy the cluster
3) run './bin/hadoop jar build/hadoop-mapred-test-*.jar badjobexample -m 1 -mt
10000 -recordt 10000'
4) While the job is running, check ${job-work-dir}/subDir/ on the tasktracker
5) Even after the job completes, some files are left behind in the job-work-dir.
{code}
2) _Verify the fix_
Apply the
[patch|https://issues.apache.org/jira/secure/attachment/12436775/mapreduce-1422-v1.4.2.patch]
along with the attached patch and repeat the steps mentioned above. With this
patch, the job-work-dir is properly cleanup as expected.
Note : job-work-dir for the default case would look something like
{mapred.local.dir}/taskTracker/{user.name}/jobcache/{job.id}/work/
> Changing permissions of files/dirs under job-work-dir may be needed sothat
> cleaning up of job-dir in all mapred-local-directories succeeds always
> -------------------------------------------------------------------------------------------------------------------------------------------------
>
> Key: MAPREDUCE-1422
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-1422
> Project: Hadoop Map/Reduce
> Issue Type: Bug
> Components: tasktracker
> Reporter: Ravi Gummadi
> Assignee: Amar Kamat
> Attachments: mapreduce-1422-test-v1.0.patch,
> mapreduce-1422-v1.4.2.patch
>
>
> After MAPREDUCE-896, if LinuxTaskController is set in config, task-controller
> binary is launched for changing permissions of taskAttemptDir and taskWorkDir
> before cleaning up of these directories sothat cleanup will be succeeded even
> if user had created files/dirs under taskAttemptDir or taskWorkDir with
> non-writable permissions. Users can't create files/dirs under job-dir
> directly as we set 2570 for job-dir. But as job-work-dir has 2770 permissions
> and user can create files/dirs under job-work-dir with non-writable
> permissions, Changing permissions of files/dirs under job-work-dir may be
> needed sothat cleaning up of job-dir in all mapred-local-directories succeeds
> always.
--
This message is automatically generated by JIRA.
-
You can reply to this email to add a comment to the issue online.
