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-common-project/hadoop-common/CHANGES.txt
hadoop/common/branches/branch-2/hadoop-common-project/hadoop-common/src/main/resources/core-default.xml
Modified:
hadoop/common/branches/branch-2/hadoop-common-project/hadoop-common/CHANGES.txt
URL:
http://svn.apache.org/viewvc/hadoop/common/branches/branch-2/hadoop-common-project/hadoop-common/CHANGES.txt?rev=1433625&r1=1433624&r2=1433625&view=diff
==============================================================================
---
hadoop/common/branches/branch-2/hadoop-common-project/hadoop-common/CHANGES.txt
(original)
+++
hadoop/common/branches/branch-2/hadoop-common-project/hadoop-common/CHANGES.txt
Tue Jan 15 20:43:35 2013
@@ -118,6 +118,9 @@ Release 2.0.3-alpha - Unreleased
HADOOP-9192. Move token related request/response messages to common.
(suresh)
+ HADOOP-8712. Change default hadoop.security.group.mapping to
+ JniBasedUnixGroupsNetgroupMappingWithFallback (Robert Parker via todd)
+
OPTIMIZATIONS
HADOOP-8866. SampleQuantiles#query is O(N^2) instead of O(N). (Andrew Wang
Modified:
hadoop/common/branches/branch-2/hadoop-common-project/hadoop-common/src/main/resources/core-default.xml
URL:
http://svn.apache.org/viewvc/hadoop/common/branches/branch-2/hadoop-common-project/hadoop-common/src/main/resources/core-default.xml?rev=1433625&r1=1433624&r2=1433625&view=diff
==============================================================================
---
hadoop/common/branches/branch-2/hadoop-common-project/hadoop-common/src/main/resources/core-default.xml
(original)
+++
hadoop/common/branches/branch-2/hadoop-common-project/hadoop-common/src/main/resources/core-default.xml
Tue Jan 15 20:43:35 2013
@@ -80,9 +80,17 @@
<property>
<name>hadoop.security.group.mapping</name>
- <value>org.apache.hadoop.security.ShellBasedUnixGroupsMapping</value>
+
<value>org.apache.hadoop.security.JniBasedUnixGroupsMappingWithFallback</value>
<description>
- Class for user to group mapping (get groups for a given user) for ACL
+ Class for user to group mapping (get groups for a given user) for ACL.
+ The default implementation,
+ org.apache.hadoop.security.JniBasedUnixGroupsMappingWithFallback,
+ will determine if the Java Native Interface (JNI) is available. If JNI is
+ available the implementation will use the API within hadoop to resolve a
+ list of groups for a user. If JNI is not available then the shell
+ implementation, ShellBasedUnixGroupsMapping, is used. This implementation
+ shells out to the Linux/Unix environment with the
+ <code>bash -c groups</code> command to resolve a list of groups for a user.
</description>
</property>
