I have a 10 node cluster and I want to reclaim 5 nodes without moving the data. I have only 1 copy (rep count 1) in my cluster. Don't ask me why ?
What I want to do: Take out the 3 TB data disks /disk1 and /disk2 from the 5 to-be-decommissioned nodes. Move the disks physically to the other nodes Remount them as /disk3 and disk4 on the remaining nodes update dfs.data.dir property to add /disk3 and /disk4 restart the HDFS. This isn't working. HDFS is in corrupted mode right now. Do you think this will work ? I don't want to increase the replication count to do this.Any work-arounds ? Thanks in advance .. Steve
