Hi, Is it possible to install both hadoop1 and hadoop2 side by side on single node for development purpose so that I can choose any one of them by just shutting down one and starting another? I installed hadoop 1.2.1 and ran air successfully. Next, when I try to do "hdfs namenode - format " from hadoop2.2.0 , it tries to format the hadoop.tmp.dir set up by hadoop1.2.1 , which is clearly not desirable. I set up "dfs.namenode.name.dir" and "dfs.datanode.data.dir" in "hdfs-site.xml" to different locations. But again the same problem... Any suggestions....
-- Chandra
