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Date: Mon, 14 Dec 2009 22:54:18 +0000 (UTC)
From: "Hadoop QA (JIRA)" <jira@apache.org>
To: common-issues@hadoop.apache.org
Subject: [jira] Commented: (HADOOP-4656) Add a user to groups mapping
 service
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    [ https://issues.apache.org/jira/browse/HADOOP-4656?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12790430#action_12790430 ] 

Hadoop QA commented on HADOOP-4656:
-----------------------------------

+1 overall.  Here are the results of testing the latest attachment 
  http://issues.apache.org/jira/secure/attachment/12427961/HADOOP-4656-6.patch
  against trunk revision 890502.

    +1 @author.  The patch does not contain any @author tags.

    +1 tests included.  The patch appears to include 3 new or modified tests.

    +1 javadoc.  The javadoc tool did not generate any warning messages.

    +1 javac.  The applied patch does not increase the total number of javac compiler warnings.

    +1 findbugs.  The patch does not introduce any new Findbugs warnings.

    +1 release audit.  The applied patch does not increase the total number of release audit warnings.

    +1 core tests.  The patch passed core unit tests.

    +1 contrib tests.  The patch passed contrib unit tests.

Test results: http://hudson.zones.apache.org/hudson/job/Hadoop-Patch-h4.grid.sp2.yahoo.net/203/testReport/
Findbugs warnings: http://hudson.zones.apache.org/hudson/job/Hadoop-Patch-h4.grid.sp2.yahoo.net/203/artifact/trunk/build/test/findbugs/newPatchFindbugsWarnings.html
Checkstyle results: http://hudson.zones.apache.org/hudson/job/Hadoop-Patch-h4.grid.sp2.yahoo.net/203/artifact/trunk/build/test/checkstyle-errors.html
Console output: http://hudson.zones.apache.org/hudson/job/Hadoop-Patch-h4.grid.sp2.yahoo.net/203/console

This message is automatically generated.

> Add a user to groups mapping service 
> -------------------------------------
>
>                 Key: HADOOP-4656
>                 URL: https://issues.apache.org/jira/browse/HADOOP-4656
>             Project: Hadoop Common
>          Issue Type: Improvement
>          Components: security
>    Affects Versions: 0.19.0
>            Reporter: Arun C Murthy
>            Assignee: Boris Shkolnik
>         Attachments: HADOOP-4656-1.patch, HADOOP-4656-2.patch, HADOOP-4656-4.patch, HADOOP-4656-6.patch, HADOOP-4656-6.patch, HADOOP-4656.patch, HADOOP-4656_0_20090108.patch
>
>
> Currently the IPC client sends the UGI which contains the user/group information for the Server. However this represents the groups for the user on the client-end. The more pertinent mapping from user to groups is actually the one seen by the Server. Hence the client should only send the user and we should add a 'group mapping service' so that the Server can query it for the mapping.

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