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From "Erik Steffl (JIRA)" <j...@apache.org>
Subject [jira] Updated: (HADOOP-6864) Provide a JNI-based implementation of ShellBasedUnixGroupsNetgroupMapping (implementation of GroupMappingServiceProvider)
Date Fri, 23 Jul 2010 18:56:54 GMT

     [ https://issues.apache.org/jira/browse/HADOOP-6864?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel

Erik Steffl updated HADOOP-6864:

    Attachment: HADOOP-6864-0.20.1xx-1.patch

HADOOP-6864-0.20.1xx-1.patch addresses the comments in review.

Testing: since it depends on system setup it's not completely automatic, the way I tested
it I created a copy of TestAccessControlList and set it up to use JniBasedUnixGroupsNetgroupMapping
for group mapping and set up /etc/netgroup accordingly (essentially same as what ShellBasedUnixGroupsNetgroupMappingTestWrapper.java

Note that /etc/nsswitch.conf must have line 'netgroup:       files' in it for the settings
in /etc/netgroup to be used.

> Provide a JNI-based implementation of ShellBasedUnixGroupsNetgroupMapping (implementation
of GroupMappingServiceProvider)
> -------------------------------------------------------------------------------------------------------------------------
>                 Key: HADOOP-6864
>                 URL: https://issues.apache.org/jira/browse/HADOOP-6864
>             Project: Hadoop Common
>          Issue Type: Improvement
>          Components: security
>            Reporter: Erik Steffl
>             Fix For: 0.22.0
>         Attachments: HADOOP-6864-0.20.1xx-1.patch, HADOOP-6864-0.20.1xx.patch
> The netgroups implementation of GroupMappingServiceProvider (see ShellBasedUnixGroupsNetgroupMapping.java)
does a fork of a unix command to get the netgroups 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.
> Note that this is similar to what https://issues.apache.org/jira/browse/HADOOP-6818 does
for implementation of GroupMappingServiceProvider that  supports only unix groups.

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