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https://issues.apache.org/jira/browse/HDFS-2892?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13200700#comment-13200700
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Brahma Reddy Battula commented on HDFS-2892:
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Hi Uma,
Thanks for your reply and suggestions...
~This property is to send the block report when starting up the system. If you
mention this delay more, then initial block report will take tame(delay you
configured)..~
Ya..I knew this property for sending block report when DN is started...My query
is If initial-delay is configured as say 5 mins upto this time NameNode will be
in safemode hence it's wn't get block report from DN's.If continuous restarting
DN's then NN will go to safemode all the time...So what my doubt is why this
initial delay is required.?.
Please correct me If I am Wrong here..
since descriptions of two properties missed and one property is commented,I
raised as suggestion..
.
> Some of property descriptions are not given(hdfs-default.xml)
> --------------------------------------------------------------
>
> 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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