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From "Devaraj Das (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HADOOP-6818) Provide a JNI-based implementation of GroupMappingServiceProvider
Date Tue, 15 Jun 2010 23:32:25 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-6818?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12879179#action_12879179
] 

Devaraj Das commented on HADOOP-6818:
-------------------------------------

bq. Just a QQ. Is this a duplicate of HADOOP-4998? Or alteast forward compatible? 
No, this is providing a JNI implementation for just the GroupMappingService.

> 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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