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https://issues.apache.org/jira/browse/HADOOP-2925?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12575428#action_12575428
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Hadoop QA commented on HADOOP-2925:
-----------------------------------
-1 overall. Here are the results of testing the latest attachment
http://issues.apache.org/jira/secure/attachment/12377149/2925.2.patch
against trunk revision 619744.
@author +1. The patch does not contain any @author tags.
tests included -1. The patch doesn't appear to include any new or modified
tests.
Please justify why no tests are needed for this patch.
javadoc +1. The javadoc tool did not generate any warning messages.
javac +1. The applied patch does not generate any new javac compiler
warnings.
release audit +1. The applied patch does not generate any new release
audit warnings.
findbugs +1. The patch does not introduce any new Findbugs warnings.
core tests +1. The patch passed core unit tests.
contrib tests +1. The patch passed contrib unit tests.
Test results:
http://hudson.zones.apache.org/hudson/job/Hadoop-Patch/1895/testReport/
Findbugs warnings:
http://hudson.zones.apache.org/hudson/job/Hadoop-Patch/1895/artifact/trunk/build/test/findbugs/newPatchFindbugsWarnings.html
Checkstyle results:
http://hudson.zones.apache.org/hudson/job/Hadoop-Patch/1895/artifact/trunk/build/test/checkstyle-errors.html
Console output:
http://hudson.zones.apache.org/hudson/job/Hadoop-Patch/1895/console
This message is automatically generated.
> [HOD] Create mapred system directory using a naming convention that will
> avoid clashes in multi-user shared cluster scenario.
> -----------------------------------------------------------------------------------------------------------------------------
>
> Key: HADOOP-2925
> URL: https://issues.apache.org/jira/browse/HADOOP-2925
> Project: Hadoop Core
> Issue Type: Bug
> Components: contrib/hod
> Affects Versions: 0.16.0
> Reporter: Hemanth Yamijala
> Assignee: Hemanth Yamijala
> Fix For: 0.16.1
>
> Attachments: 2925.1.patch, 2925.2.patch, 2925.patch
>
>
> Currently, HOD generates the name of the mapredsystem directory using the
> name /mapredsystem/hostname-of-jobtracker.
> In HADOOP-2899, we ran into a scenario where this naming convention could
> lead to problems in case dfs permissions are enabled. While the bug should
> ideally be addressed in Hadoop M/R, it will be better that HOD does not
> generate names that can potentially clash across runs. One way to solve the
> problem is to do what HOD already does for local log and temp directories -
> name it using username.torque-job-id, which is going to be pretty unique
> mostly.
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