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
