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From praveenesh kumar <praveen...@gmail.com>
Subject Question on Secondary Namenode
Date Mon, 09 Jan 2012 06:08:51 GMT
Masters file in $HADOOP_HOME/conf tells you about where exactly the
SecondaryNamenode deamon should run. Correct me please if I am wrong.

My doubt is Do all Datanodes should know where secondary namenode is
running or Only namenode should be knowing where secondary namenode is
running ?
The reason I am asking this thing is, to know Do I need to copy the
contents $HADOOP_HOME/conf/masters file in all Datanodes or only Namenode
and Secondary Namenode should have this entry in their master file.

Also, if I am right, the following property, tells  the location of
Namenode to Secondary Namenode, so that it can communicate with namenode to
create checkpoints.





The address and the base port where the dfs namenode web ui will listen on.

If the port is 0 then the server will start on a free port.



so this property should be define only in the secondary namenode, Does this
property also needs to be define in all Datanodes ?



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