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HBase >> mail # user >> Is there any way to balance one table?


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Re: Is there any way to balance one table?
bq. On a 3000 region cluster

Balancing is per-table. Meaning total number of regions doesn't come into
play.

On Tue, Feb 19, 2013 at 7:55 PM, Liu, Raymond <[EMAIL PROTECTED]> wrote:

> Hmm, in order to have the 96 region table be balanced within 20% On a 3000
> region cluster when all other table is balanced.
>
> the slop will need to be around 20%/30, say 0.006? won't it be too small?
>
> >
> > Yes, Raymond.
> > You should lower sloppiness.
> >
> > On Tue, Feb 19, 2013 at 7:48 PM, Liu, Raymond <[EMAIL PROTECTED]>
> > wrote:
> >
> > > I mean region number is small.
> > >
> > > Overall I have say 3000 region on 4 node, while this table only have
> > > 96 region. It won't be 24 for each region server, instead , will be
> > > something like 19/30/23/21 etc.
> > >
> > > This means that I need to limit the slop to 0.02 etc? so that the
> > > balancer actually run on this table?
> > >
> > > Best Regards,
> > > Raymond Liu
> > >
> > > From: Marcos Ortiz [mailto:[EMAIL PROTECTED]]
> > > Sent: Wednesday, February 20, 2013 11:44 AM
> > > To: [EMAIL PROTECTED]
> > > Cc: Liu, Raymond
> > > Subject: Re: Is there any way to balance one table?
> > >
> > > What is the size of your table?
> > > On 02/19/2013 10:40 PM, Liu, Raymond wrote:
> > > Hi
> > >
> > > I do call balancer, while it seems it doesn't work. Might due to this
> > > table is small and overall region number difference is within
> threshold?
> > >
> > > -----Original Message-----
> > > From: Jean-Marc Spaggiari [mailto:[EMAIL PROTECTED]]
> > > Sent: Wednesday, February 20, 2013 10:59 AM
> > > To: [EMAIL PROTECTED]
> > > Subject: Re: Is there any way to balance one table?
> > >
> > > Hi Liu,
> > >
> > > Why did not you simply called the balancer? If other tables are
> > > already balanced, it should not touch them and will only balance the
> > > table which is not balancer?
> > >
> > > JM
> > >
> > > 2013/2/19, Liu, Raymond <[EMAIL PROTECTED]>:
> > > I choose to move region manually. Any other approaching?
> > >
> > >
> > > 0.94.1
> > >
> > > Any cmd in shell? Or I need to change balance threshold to 0 an run
> > > global balancer cmd in shell?
> > >
> > >
> > >
> > > Best Regards,
> > > Raymond Liu
> > >
> > > -----Original Message-----
> > > From: Ted Yu [mailto:[EMAIL PROTECTED]]
> > > Sent: Wednesday, February 20, 2013 9:09 AM
> > > To: [EMAIL PROTECTED]
> > > Subject: Re: Is there any way to balance one table?
> > >
> > > What version of HBase are you using ?
> > >
> > > 0.94 has per-table load balancing.
> > >
> > > Cheers
> > >
> > > On Tue, Feb 19, 2013 at 5:01 PM, Liu, Raymond <[EMAIL PROTECTED]>
> > > wrote:
> > >
> > > Hi
> > >
> > > Is there any way to balance just one table? I found one of my table is
> > > not balanced, while all the other table is balanced. So I want to fix
> > > this table.
> > >
> > > Best Regards,
> > > Raymond Liu
> > >
> > >
> > >
> > >
> > > --
> > > Marcos Ortiz Valmaseda,
> > > Product Manager && Data Scientist at UCI
> > > Blog: http://marcosluis2186.posterous.com
> > > Twitter: @marcosluis2186
> > >
>