Hi, I have an existing Hadoop cluster built from 0.21.0 release and have some important data on HDFS, now I'm planning to move to the current GA release(2.2.0), what's the procedure for the data migration(from 0.21.0 hdfs to 2,20 hdfs) if topology is not changed(all nodes are not changed)? Can I simply copy all meta data files from 0.21.0(say /hadoop_021/temp/hdfs/namenode/) to 2.2.0(say /hadoop-220/temp/hdfs/namenode).
Thanks -- --Anfernee