the rest of nodes to be alive has enough size to store. for this one that you've mentioned. > its easier to do so in a rolling manner without need of a > decommission.
to check my understanding, just shutting down 2 of them and then 2 more and then 2 more without decommissions. is this correct? 2013. 4. 2., 오후 4:54, Harsh J <ha...@cloudera.com> 작성: > Note though that its only possible to decommission 7 nodes at the same > time and expect it to finish iff the remaining 8 nodes have adequate > free space for the excess replicas. > > If you're just going to take them down for a short while (few mins > each), its easier to do so in a rolling manner without need of a > decommission. You can take upto two down at a time on a replication > average of 3 or 3+, and put it back in later without too much data > movement impact. > > On Tue, Apr 2, 2013 at 1:06 PM, Yanbo Liang <yanboha...@gmail.com> wrote: >> 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 <henry.jy...@gmail.com> >>> >>> :) >>> >>> 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 <azury...@gmail.com> 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 <yanboha...@gmail.com> wrote: >>>> >>>> You want to decommission how many nodes? >>>> >>>> >>>> 2013/4/2 Henry JunYoung KIM <henry.jy...@gmail.com> >>>>> >>>>> 15 for datanodes and 3 for replication factor. >>>>> >>>>> 2013. 4. 1., 오후 3:23, varun kumar <varun....@gmail.com> 작성: >>>>> >>>>>> How many nodes do you have and replication factor for it. >>>>> >>>> >>> >>> >> > > > > -- > Harsh J
