hello, I am trying to separate my 6 nodes onto 2 different racks. For test purpose, I wrote a bash file which smply returns "rack0" all the time. And I add property "topology.script.file.name" in core-site.xml.
When I restart by start-dfs.sh, the namenode could not find any datanode at all. All datanodes are lost somehow. If I remove "topology.script.file.name" from conf, things back to normal, i.e. all datanodes are under "default-rack". I don't why datanode couldn't register to namenode when using rack. Any ideas?
