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Date: Thu, 16 Aug 2012 01:18:38 +1100 (NCT)
From: "Hadoop QA (JIRA)" <jira@apache.org>
To: common-issues@hadoop.apache.org
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Subject: [jira] [Commented] (HADOOP-8611) Allow fall-back to the shell-based
 implementation when JNI-based users-group mapping fails
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    [ https://issues.apache.org/jira/browse/HADOOP-8611?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13435141#comment-13435141 ] 

Hadoop QA commented on HADOOP-8611:
-----------------------------------

-1 overall.  Here are the results of testing the latest attachment 
  http://issues.apache.org/jira/secure/attachment/12541046/HADOOP-8611.patch
  against trunk revision .

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

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

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

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

    +1 eclipse:eclipse.  The patch built with eclipse:eclipse.

    +1 findbugs.  The patch does not introduce any new Findbugs (version 1.3.9) warnings.

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

    -1 core tests.  The patch failed these unit tests in hadoop-common-project/hadoop-common:

                  org.apache.hadoop.ha.TestZKFailoverController

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

Test results: https://builds.apache.org/job/PreCommit-HADOOP-Build/1304//testReport/
Console output: https://builds.apache.org/job/PreCommit-HADOOP-Build/1304//console

This message is automatically generated.
                
> Allow fall-back to the shell-based implementation when JNI-based users-group mapping fails
> ------------------------------------------------------------------------------------------
>
>                 Key: HADOOP-8611
>                 URL: https://issues.apache.org/jira/browse/HADOOP-8611
>             Project: Hadoop Common
>          Issue Type: Bug
>          Components: security
>    Affects Versions: 1.0.3, 0.23.0, 2.0.0-alpha
>            Reporter: Kihwal Lee
>            Assignee: Robert Parker
>             Fix For: 1.1.1, 0.23.3, 3.0.0, 2.2.0-alpha
>
>         Attachments: HADOOP-8611.patch
>
>
> When the JNI-based users-group mapping is enabled, the process/command will fail if the native library, libhadoop.so, cannot be found. This mostly happens at client-side where users may use hadoop programatically. Instead of failing, falling back to the shell-based implementation will be desirable. Depending on how cluster is configured, use of the native netgroup mapping cannot be subsituted by the shell-based default. For this reason, this behavior must be configurable with the default being "disabled".

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