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From Manjeet Singh <manjeet.chand...@gmail.com>
Subject Re: How Hbase perform distribution of rowkey in region server
Date Mon, 21 Nov 2016 08:48:23 GMT
Hi Anoop its clear to me how Hbase distribute data among regions

as you told

Rowkeys starting with a,b.... will be assigned to region 1

Rowkeys starting with b,c.... will be assigned to region 2

Rowkeys starting with c,...... will be assigned to region 3


my question is if i have 100 region server ok and by using this pre-split
policy Hbase create empty region on every data note i.e. actually region
server so if i insert one rk as showing below

a_data123

how hbase distrubute this data into all 100 nodes? does it make 100 copy
and put into all RS?


Thanks

Manjeet

On Mon, Nov 21, 2016 at 2:11 PM, Anoop John <anoop.hbase@gmail.com> wrote:

> When u create table this way, it will have 4 regions totally.  ( , a],
> (a, b], (b, c], (c, ]..    It is not like every RS will get 3 splits.
>   The Load balancer in master will distribute these regions on to
> available RSs.  So when a rk comes say a_data1, it corresponds to
> exactly ONE region which is in exactly ONE RS.  So the client reaches
> that RS and region for this RK.
>
> -Anoop-
>
> On Mon, Nov 21, 2016 at 1:59 PM, Manjeet Singh
> <manjeet.chandhok@gmail.com> wrote:
> > Hi All
> >
> > My question is very simple I have created my table using pre-split
> > as showing below
> >
> >  create 'test_table', 'CF1', SPLITS=> ['a', 'b', 'c']
> >
> > and i have 4 region server
> > can anyone help me how hbase distribute rowkey into the regio server
> please
> > mind I am asking resion server not regions
> >
> > what I am assuming
> >
> > based on pre-split all region will have 3 region created on on each
> resion
> > server
> > if one rowkey comes say a_data1, it will go on all refion server in
> region
> > where region boundry lie in between start rowekey and end rowkey
> >
> > please clear if I am on wrong assuming
> >
> > Thanks
> > Manjeet
> >
> > --
> > luv all
>



-- 
luv all

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