Hi Mohammad,
Yes that's correct your "rack awareness" script takes the IP address of a node and returns the rack name/id. You then just have to ensure the script is executable and referenced (using an absolute path) in the parameter topology.script.file.name in core-site.xml. Regards, Vijay From: Mohammad Mustaqeem [mailto:3m.mustaq...@gmail.com] Sent: 15 April 2013 13:05 To: user@hadoop.apache.org Subject: How to set Rack Id of DataNodes? Hello everyone?? I want to set the Rack Id of each DataNodes?? I have read somewhere that we have to write a script that gives Rack Id of nodes. I want to clarify that the input of that script will be IP Address of DataNode and the output will be the RackId.. Is it?? -- With regards --- Mohammad Mustaqeem, M.Tech (CSE) MNNIT Allahabad 9026604270
