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From "Hudson (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HADOOP-8611) Allow fall-back to the shell-based implementation when JNI-based users-group mapping fails
Date Mon, 20 Aug 2012 21:50:38 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-8611?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13438249#comment-13438249
] 

Hudson commented on HADOOP-8611:
--------------------------------

Integrated in Hadoop-Common-trunk-Commit #2607 (See [https://builds.apache.org/job/Hadoop-Common-trunk-Commit/2607/])
    HADOOP-8611. Allow fall-back to the shell-based implementation when JNI-based users-group
mapping fails (Robert Parker via bobby) (Revision 1375221)

     Result = SUCCESS
bobby : http://svn.apache.org/viewcvs.cgi/?root=Apache-SVN&view=rev&rev=1375221
Files : 
* /hadoop/common/trunk/hadoop-common-project/hadoop-common/CHANGES.txt
* /hadoop/common/trunk/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/security/JniBasedUnixGroupsMappingWithFallback.java
* /hadoop/common/trunk/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/security/JniBasedUnixGroupsNetgroupMappingWithFallback.java
* /hadoop/common/trunk/hadoop-common-project/hadoop-common/src/test/java/org/apache/hadoop/security/TestGroupFallback.java

                
> 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: 1.2.0, 0.23.3, 2.1.0-alpha, 3.0.0, 2.2.0-alpha
>
>         Attachments: HADOOP-8611-branch1.patch, HADOOP-8611-branch1.patch, HADOOP-8611.patch,
HADOOP-8611.patch, 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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