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From t...@apache.org
Subject svn commit: r1433625 - /hadoop/common/branches/branch-2/hadoop-hdfs-project/hadoop-hdfs/src/main/docs/src/documentation/content/xdocs/hdfs_permissions_guide.xml
Date Tue, 15 Jan 2013 20:43:35 GMT
Author: todd
Date: Tue Jan 15 20:43:35 2013
New Revision: 1433625

URL: http://svn.apache.org/viewvc?rev=1433625&view=rev
Log:
HADOOP-8712. Change default hadoop.security.group.mapping to JniBasedUnixGroupsNetgroupMappingWithFallback.
Contributed by Robert Parker.

Modified:
    hadoop/common/branches/branch-2/hadoop-hdfs-project/hadoop-hdfs/src/main/docs/src/documentation/content/xdocs/hdfs_permissions_guide.xml

Modified: hadoop/common/branches/branch-2/hadoop-hdfs-project/hadoop-hdfs/src/main/docs/src/documentation/content/xdocs/hdfs_permissions_guide.xml
URL: http://svn.apache.org/viewvc/hadoop/common/branches/branch-2/hadoop-hdfs-project/hadoop-hdfs/src/main/docs/src/documentation/content/xdocs/hdfs_permissions_guide.xml?rev=1433625&r1=1433624&r2=1433625&view=diff
==============================================================================
--- hadoop/common/branches/branch-2/hadoop-hdfs-project/hadoop-hdfs/src/main/docs/src/documentation/content/xdocs/hdfs_permissions_guide.xml
(original)
+++ hadoop/common/branches/branch-2/hadoop-hdfs-project/hadoop-hdfs/src/main/docs/src/documentation/content/xdocs/hdfs_permissions_guide.xml
Tue Jan 15 20:43:35 2013
@@ -92,10 +92,11 @@ There is no provision within HDFS for cr
 
 <section><title>Group Mapping</title>
 <p>
-Once a username has been determined as described above, the list of groups is determined
by a <em>group mapping
-service</em>, configured by the <code>hadoop.security.group.mapping</code>
property.
-The default implementation, <code>org.apache.hadoop.security.ShellBasedUnixGroupsMapping</code>,
will shell out
-to the Unix <code>bash -c groups</code> command to resolve a list of groups for
a user.
+Once a username has been determined as described above, the list of groups is 
+determined by a <em>group mapping service</em>, configured by the 
+<code>hadoop.security.group.mapping</code> property. Refer to the 
+core-default.xml for details of the <code>hadoop.security.group.mapping</code>
+implementation.
 </p>
 <p>
 An alternate implementation, which connects directly to an LDAP server to resolve the list
of groups, is available



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