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Posted to user@hbase.apache.org by Dejan Menges <de...@gmail.com> on 2015/04/29 12:46:06 UTC

Rebalancing after manual region move

Hi,

During investigation of some issues during hotspoting we were moving some
regions to different region servers. However, now I see that balancer is
not affecting those regions anymore - they 'stick' to those servers. Is
there a way to force rebalancing in case like this?

Thanks!

Re: Rebalancing after manual region move

Posted by Dejan Menges <de...@gmail.com>.

Thanks a lot, looking forward to it
On Apr 29, 2015 8:36 PM, "Ted Yu" <yu...@gmail.com> wrote:

> In the upcoming 1.1.0 release, the following would make balancer state
> inspection more user-friendly:
> HBASE-13222 Provide means of non-destructive balancer inspection
>
> FYI
>
> On Wed, Apr 29, 2015 at 4:11 AM, Dejan Menges <de...@gmail.com>
> wrote:
>
> > Hi Jean-Marc,
> >
> > Ok, that's what I thought too, just wasn't sure as I didn't see any error
> > anywhere, neither something happening when I run balancer, so it's good
> > then :)
> >
> > Thanks a lot!
> > Dejan
> >
> > On Wed, Apr 29, 2015 at 12:52 PM Jean-Marc Spaggiari <
> > jean-marc@spaggiari.org> wrote:
> >
> > > Hi Dejan,
> > >
> > > Most probably because the cluster is balanced enough?
> > >
> > > You can run the balancer from the shell and look in the logs to see
> > what's
> > > the outcome.
> > >
> > > Simply type "hbase shell" and then "balancer". It will also return the
> > > state of the balancer (true for active, false of passive).
> > >
> > > JM
> > >
> > > 2015-04-29 6:46 GMT-04:00 Dejan Menges <de...@gmail.com>:
> > >
> > > > Hi,
> > > >
> > > > During investigation of some issues during hotspoting we were moving
> > some
> > > > regions to different region servers. However, now I see that balancer
> > is
> > > > not affecting those regions anymore - they 'stick' to those servers.
> Is
> > > > there a way to force rebalancing in case like this?
> > > >
> > > > Thanks!
> > > >
> > >
> >
>

Re: Rebalancing after manual region move

Posted by Ted Yu <yu...@gmail.com>.

In the upcoming 1.1.0 release, the following would make balancer state
inspection more user-friendly:
HBASE-13222 Provide means of non-destructive balancer inspection

FYI

On Wed, Apr 29, 2015 at 4:11 AM, Dejan Menges <de...@gmail.com>
wrote:

> Hi Jean-Marc,
>
> Ok, that's what I thought too, just wasn't sure as I didn't see any error
> anywhere, neither something happening when I run balancer, so it's good
> then :)
>
> Thanks a lot!
> Dejan
>
> On Wed, Apr 29, 2015 at 12:52 PM Jean-Marc Spaggiari <
> jean-marc@spaggiari.org> wrote:
>
> > Hi Dejan,
> >
> > Most probably because the cluster is balanced enough?
> >
> > You can run the balancer from the shell and look in the logs to see
> what's
> > the outcome.
> >
> > Simply type "hbase shell" and then "balancer". It will also return the
> > state of the balancer (true for active, false of passive).
> >
> > JM
> >
> > 2015-04-29 6:46 GMT-04:00 Dejan Menges <de...@gmail.com>:
> >
> > > Hi,
> > >
> > > During investigation of some issues during hotspoting we were moving
> some
> > > regions to different region servers. However, now I see that balancer
> is
> > > not affecting those regions anymore - they 'stick' to those servers. Is
> > > there a way to force rebalancing in case like this?
> > >
> > > Thanks!
> > >
> >
>

Re: Rebalancing after manual region move

Posted by Dejan Menges <de...@gmail.com>.

Hi Jean-Marc,

Ok, that's what I thought too, just wasn't sure as I didn't see any error
anywhere, neither something happening when I run balancer, so it's good
then :)

Thanks a lot!
Dejan

On Wed, Apr 29, 2015 at 12:52 PM Jean-Marc Spaggiari <
jean-marc@spaggiari.org> wrote:

> Hi Dejan,
>
> Most probably because the cluster is balanced enough?
>
> You can run the balancer from the shell and look in the logs to see what's
> the outcome.
>
> Simply type "hbase shell" and then "balancer". It will also return the
> state of the balancer (true for active, false of passive).
>
> JM
>
> 2015-04-29 6:46 GMT-04:00 Dejan Menges <de...@gmail.com>:
>
> > Hi,
> >
> > During investigation of some issues during hotspoting we were moving some
> > regions to different region servers. However, now I see that balancer is
> > not affecting those regions anymore - they 'stick' to those servers. Is
> > there a way to force rebalancing in case like this?
> >
> > Thanks!
> >
>

Re: Rebalancing after manual region move

Posted by Jean-Marc Spaggiari <je...@spaggiari.org>.

Hi Dejan,

Most probably because the cluster is balanced enough?

You can run the balancer from the shell and look in the logs to see what's
the outcome.

Simply type "hbase shell" and then "balancer". It will also return the
state of the balancer (true for active, false of passive).

JM

2015-04-29 6:46 GMT-04:00 Dejan Menges <de...@gmail.com>:

> Hi,
>
> During investigation of some issues during hotspoting we were moving some
> regions to different region servers. However, now I see that balancer is
> not affecting those regions anymore - they 'stick' to those servers. Is
> there a way to force rebalancing in case like this?
>
> Thanks!
>