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From "Devaraj Das (JIRA)" <j...@apache.org>
Subject [jira] Updated: (HADOOP-6818) Provide a JNI-based implementation of GroupMappingServiceProvider
Date Thu, 10 Jun 2010 20:16:15 GMT

     [ https://issues.apache.org/jira/browse/HADOOP-6818?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Devaraj Das updated HADOOP-6818:
--------------------------------

    Attachment: JNIGroupMapping.patch

Patch for Y20S (not for commit). The meat of the patch is in the C and Java files. Also, the
src/native/Makefile.am & src/native/configure.ac was changed to easily accommodate this
native implementation in the hadoop build.

> Provide a JNI-based implementation of GroupMappingServiceProvider
> -----------------------------------------------------------------
>
>                 Key: HADOOP-6818
>                 URL: https://issues.apache.org/jira/browse/HADOOP-6818
>             Project: Hadoop Common
>          Issue Type: Improvement
>          Components: security
>            Reporter: Devaraj Das
>            Assignee: Devaraj Das
>             Fix For: 0.22.0
>
>         Attachments: JNIGroupMapping.patch
>
>
> The default implementation of GroupMappingServiceProvider does a fork of a unix command
to get the groups of a user. Since the group resolution happens in the servers, this might
be costly. This jira aims at providing a JNI-based implementation for GroupMappingServiceProvider.

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