It's reasonable to decommission 7 nodes at the same time. But may be it also takes long time to finish it. Because all the replicas in these 7 nodes need to be copied to remaining 8 nodes. The size of transfer from these nodes to the remaining nodes is equal.
2013/4/2 Henry Junyoung Kim <[email protected]> > :) > > currently, I have 15 data nodes. > for some tests, I am trying to decommission until 8 nodes. > > Now, the total dfs used size is 52 TB which is including all replicated > blocks. > from 15 to 8, total spent time is almost 4 days long. ;( > > someone mentioned that I don't need to decommission node by node. > for this case, is there no problems if I decommissioned 7 nodes at the > same time? > > > 2013. 4. 2., 오후 12:14, Azuryy Yu <[email protected]> 작성: > > I can translate it to native English: how many nodes you want to > decommission? > > > On Tue, Apr 2, 2013 at 11:01 AM, Yanbo Liang <[email protected]> wrote: > >> You want to decommission how many nodes? >> >> >> 2013/4/2 Henry JunYoung KIM <[email protected]> >> >>> 15 for datanodes and 3 for replication factor. >>> >>> 2013. 4. 1., 오후 3:23, varun kumar <[email protected]> 작성: >>> >>> > How many nodes do you have and replication factor for it. >>> >>> >> > >
