Thanks Bryan. Here is the regions count:
1: 2616 2: 2620 3: 2623 4: 2617 5: 2617 The skew is in Node 2 where we have the space issue (double the size of other 4 nodes). On Mon, Apr 23, 2012 at 7:50 PM, Bryan Beaudreault <[email protected] > wrote: > Do all nodes have the same number of regions? If not you may not have the > balancer on. You can turn it on using balancer_switch true in the hbase > shell. The balancer also doesn't run if there is a region stuck in > transition. In this case if your data is growing rapidly I have seen > regionservers become lopsided until I could clean up the stuck region and > re-enable the balancer. > > Finally, depending on your version of hbase, the balancer only tries to > keep the number of regions similar across all regionservers. If you have > tables of different max region sizes I could imagine a case where one > region server unluckily is hosting more regions from the table with larger > region sizes. This also might explain the imbalance in requests, if one of > your tables gets more traffic than other. The HMaster UI would be helpful > for determining the spread of regions per table across regionservers. > > On Mon, Apr 23, 2012 at 9:41 PM, David Charle <[email protected]> > wrote: > > > Hi > > > > What can make a region server unbalanced when it comes to space ? (and > > possibly requests too). > > > > For example; I have 5 node cluster (replication factor of 3); and in > which > > all 4 has same size; where as one node is almost double in size for > /hbase. > > > > Any help will be appreciated; esp what makes the skew and how to fix it ? > > > > Thanks > > David > > >
