Thanks, Jimmy. Do you mean the config "hbase.master.loadbalance.bytable"? According to [1] and [2], it is "true" by default.
[1] https://issues.apache.org/jira/secure/attachment/12509174/3373.txt [2] http://search-hadoop.com/m/M6z7G1PKejw Norbert On Tue, Dec 4, 2012 at 2:23 PM, Jimmy Xiang <[email protected]> wrote: > In CDH4.1.2, per table region balancing is turned off by default. > > You can change the configuration to turn it on. > > Thanks, > Jimmy > > On Tue, Dec 4, 2012 at 11:10 AM, Ted Yu <[email protected]> wrote: >> Can you give us a little more detail on how much deviation the region >> counts on region servers have ? >> >> There is a parameter, hbase.regions.slop, with default value of 0.2 >> This parameter allows region count to deviate by certain percentage from >> average region count. >> >> You can tighten the value for this parameter and see if you get better >> results. >> >> I will also put the above summary on HBASE-3373. >> >> Thanks >> >> On Tue, Dec 4, 2012 at 8:42 AM, Norbert Burger >> <[email protected]>wrote: >> >>> We upgraded to CDH4.1.2 (contains HBASE-3373) in one of our >>> environments. After filling that environment with data, I was >>> surprised to see that regions were not balanced across regionservers >>> at the table level. We have restarted all regionservers at least once >>> here. >>> >>> In [1], I see Stack's reference to temporarily adding >>> "hbase.master.startup.retainassign=false" and restarting nodes. Is >>> this a necessary step on the path to region balancing nirvana? >>> >>> Norbert >>> >>> [1] http://search-hadoop.com/m/MQSPEyUQIv1 >>>
