For the region servers you just need to shut them down, the master will rebalance.
For the datanodes you need to decommission them: http://wiki.apache.org/hadoop/FAQ#I_want_to_make_a_large_cluster_smaller_by_taking_out_a_bunch_of_nodes_simultaneously._How_can_this_be_done.3F J-D On Tue, Jun 28, 2011 at 10:14 AM, Sam Seigal <[email protected]> wrote: > Hi All, > > I have a 14 node cluster setup for HBase. Someone else in my office needs to > use some of these machines and I would like to descale my cluster from 14 to > 6 machines. > Is there an efficient way to do this ? Since there is data residing on the > machines I want to get rid of, are there utilities that would move this data > for me and then rebalance the cluster ? > > Thanks, > > Sam >
