Some of property descriptions are not given(hdfs-default.xml) 
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                 Key: HDFS-2892
                 URL: https://issues.apache.org/jira/browse/HDFS-2892
             Project: Hadoop HDFS
          Issue Type: Bug
          Components: name-node
    Affects Versions: 0.23.0
            Reporter: Brahma Reddy Battula
            Priority: Trivial


Hi..I taken 23.0 release form 
http://hadoop.apache.org/common/releases.html#11+Nov%2C+2011%3A+release+0.23.0+available

I just gone through all properties provided in the hdfs-default.xml..Some of 
the property description not mentioned..It's better to give description of 
property and usage(how to configure ) and Only MapReduce related jars only 
provided..Please check following two configurations


 *No Description*

{noformat}
<property>
  <name>dfs.datanode.https.address</name>
  <value>0.0.0.0:50475</value>
</property>

<property>
  <name>dfs.namenode.https-address</name>
  <value>0.0.0.0:50470</value>
</property>
{noformat}


 Better to mention example usage (what to configure...format(syntax))in 
desc,here I did not get what default mean whether this name of n/w interface or 
something else

 <property>
  <name>dfs.datanode.dns.interface</name>
  <value>default</value>
  <description>The name of the Network Interface from which a data node should 
  report its IP address.
  </description>
 </property>


The following property is commented..If it is not supported better to remove.

<property>
   <name>dfs.cluster.administrators</name>
   <value>ACL for the admins</value>
   <description>This configuration is used to control who can access the
                default servlets in the namenode, etc.
   </description>
</property>




 Small clarification for following property..if some value configured this then 
NN will be safe mode upto this much time..
May I know usage of the following property...
<property>
  <name>dfs.blockreport.initialDelay</name>  <value>0</value>
  <description>Delay for first block report in seconds.</description>
</property>


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