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MapReduce, mail # user - rack topology data update


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Re: rack topology data update
Jameson Li 2012-09-13, 05:51
Hi harsh,

I have followed your suggestion operation.

1, stop the new datanode.(I have modified the topology file in the namenode
before.)
2, run 'hadoop dfsadmin -refreshNodes' on the namenode
3, start the new datanode.

But it really not update the new topology mapping.
It just show the start info in the namenode that:
"
2012-09-13 13:44:14,706 INFO org.apache.hadoop.net.NetworkTopology:
Removing a node: /default-rack/10.0.10.100:50010
2012-09-13 13:44:14,706 INFO org.apache.hadoop.net.NetworkTopology: Adding
a new node: /default-rack/10.0.10.100:50010
"
专注于Mysql,MSSQL,Oracle,Hadoop
2012/9/13 Harsh J <[EMAIL PROTECTED]>

> the DN only after (2) so it picks up the right mapping an