with hadoop.security.group.mapping settings two extra INFO with every hadoop 
command
------------------------------------------------------------------------------------

                 Key: HDFS-2446
                 URL: https://issues.apache.org/jira/browse/HDFS-2446
             Project: Hadoop HDFS
          Issue Type: Bug
          Components: hdfs client
    Affects Versions: 0.20.205.0
            Reporter: Rajit Saha


If we add following config parameter in core-site.xml in all the compute nodes 
and client side, we get extra two INFO message in STDOUT for every hadoop 
command

core-site.xml
=============
...
  <property>
    <name>hadoop.security.group.mapping</name>
    <value>org.apache.hadoop.security.JniBasedUnixGroupsNetgroupMapping</value>
    <description>
    Class for user to group mapping (get groups for a given user) for ACL
    </description>
  </property>
....

$hadoop dfs -lsr /tmp
11/10/12 19:04:58 INFO util.NativeCodeLoader: Loaded the native-hadoop library
11/10/12 19:04:58 INFO security.JniBasedUnixGroupsMapping: Using 
JniBasedUnixGroupsMapping for Group resolution
drwx------   - hadoopqa hdfs          0 2011-10-12 19:04 /tmp/file1
drwx------   - hadoopqa hdfs          0 2011-10-12 19:04 /tmp/file2
$hadoop dfs -rmr -skipTrash /tmp/file2
11/10/12 19:04:54 INFO util.NativeCodeLoader: Loaded the native-hadoop library
11/10/12 19:04:54 INFO security.JniBasedUnixGroupsMapping: Using 
JniBasedUnixGroupsMapping for Group resolution
Deleted hdfs://<NN Hostname>/tmp/file2

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