-Re: regions not balanced, CDH4.1.2
Ted Yu 2012-12-04, 19:35
Thanks for the information.
Please turn on per-table load balancing and tell us what it looks like.
On Tue, Dec 4, 2012 at 11:32 AM, Norbert Burger <[EMAIL PROTECTED]>wrote:
> On Tue, Dec 4, 2012 at 2:10 PM, 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.
> Thanks for the response. I think this isn't an issue with region slop
> -- I had a table with only ~15 regions, and half of them ended up on
> one region server. I've since manually rebalanced that table, but
> here's an example from different table .
> Regions by Region Server
> Region Server Region Count
> http://aspen8hdp9.turner.com:60030/ 25
> http://aspen8hdp10.turner.com:60030/ 25
> http://aspen8hdp16.turner.com:60030/ 38
> http://aspen8hdp13.turner.com:60030/ 26
> http://aspen8hdp15.turner.com:60030/ 26
> http://aspen8hdp12.turner.com:60030/ 43
> http://aspen8hdp14.turner.com:60030/ 31
> http://aspen8hdp11.turner.com:60030/ 42