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https://issues.apache.org/jira/browse/HADOOP-6818?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12888647#action_12888647
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Erik Steffl commented on HADOOP-6818:
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+1
> 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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