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From Pedro Gandola <pedro.gand...@gmail.com>
Subject Re: Unexpected region splits
Date Mon, 15 Feb 2016 18:18:30 GMT
Hi Ted,

Thanks,
I think I got the problem, I'm using *IncreasingToUpperBoundRegionSplitPolicy
(default)* instead *ConstantSizeRegionSplitPolicy* which in my use case is
what I want.

Cheers
Pedro

On Mon, Feb 15, 2016 at 5:22 PM, Ted Yu <yuzhihong@gmail.com> wrote:

> Can you pastebin region server log snippet around the time when the split
> happened ?
>
> Was the split on data table or index table ?
>
> Thanks
>
> > On Feb 15, 2016, at 10:22 AM, Pedro Gandola <pedro.gandola@gmail.com>
> wrote:
> >
> > Hi,
> >
> > I have a cluster using *HBase 1.1.2* where I have a table and a local
> index
> > (using *Apache Phoenix 4.6*) in total both tables have *300 regions*
> > (aprox: *18 regions per server*), my* hbase.hregion.max.filesize=30GB
> *and
> > my region sizes are now *~4.5GB compressed (~7GB uncompressed)*. However
> > each time I restart a RS sometimes a region gets split. This is
> unexpected
> > because my key space is uniform (using MD5) and if the problem was my
> > *region.size
> >> * *hbase.hregion.max.filesize *I would expect to have all the regions or
> > almost all splitting but this only happens when I restart a RS and it
> > happens only for 1 or 2 regions.
> >
> > What are the different scenarios where a region can split?
> >
> > What are the right steps to restart a region server in order to avoid
> these
> > unexpected splits?
> >
> > Thank you,
> > Cheers
> > Pedro
>

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