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Posted to hdfs-commits@hadoop.apache.org by to...@apache.org on 2013/01/15 21:43:32 UTC

svn commit: r1433624 - /hadoop/common/trunk/hadoop-hdfs-project/hadoop-hdfs/src/main/docs/src/documentation/content/xdocs/hdfs_permissions_guide.xml

Author: todd
Date: Tue Jan 15 20:43:32 2013
New Revision: 1433624

URL: http://svn.apache.org/viewvc?rev=1433624&view=rev
Log:
HADOOP-8712. Change default hadoop.security.group.mapping to JniBasedUnixGroupsNetgroupMappingWithFallback. Contributed by Robert Parker.

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

Modified: hadoop/common/trunk/hadoop-hdfs-project/hadoop-hdfs/src/main/docs/src/documentation/content/xdocs/hdfs_permissions_guide.xml
URL: http://svn.apache.org/viewvc/hadoop/common/trunk/hadoop-hdfs-project/hadoop-hdfs/src/main/docs/src/documentation/content/xdocs/hdfs_permissions_guide.xml?rev=1433624&r1=1433623&r2=1433624&view=diff
==============================================================================
--- hadoop/common/trunk/hadoop-hdfs-project/hadoop-hdfs/src/main/docs/src/documentation/content/xdocs/hdfs_permissions_guide.xml (original)
+++ hadoop/common/trunk/hadoop-hdfs-project/hadoop-hdfs/src/main/docs/src/documentation/content/xdocs/hdfs_permissions_guide.xml Tue Jan 15 20:43:32 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