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From Ted Yu <yuzhih...@gmail.com>
Subject Re: Help: RegionTooBusyException: failed to get a lock in 60000 ms
Date Mon, 22 Sep 2014 16:06:01 GMT
Do you have access to Master UI ?

<master-address>:60010/logs/ would show you list of log files.

The you can view <master-address>:60010/logs/hbase-<user>-master-XXX.log

Cheers

On Mon, Sep 22, 2014 at 9:00 AM, Jianshi Huang <jianshi.huang@gmail.com>
wrote:

> Ah... I don't have access to HMaster logs... I need to ask the admin.
>
> Jianshi
>
> On Mon, Sep 22, 2014 at 11:49 PM, Ted Yu <yuzhihong@gmail.com> wrote:
>
> > bq. assign per-table balancer class
> >
> > No that I know of.
> > Can you pastebin master log involving output from balancer ?
> >
> > Cheers
> >
> > On Mon, Sep 22, 2014 at 8:29 AM, Jianshi Huang <jianshi.huang@gmail.com>
> > wrote:
> >
> > > Hi Ted,
> > >
> > > I moved setBalancerRunning before balancer and run them twice. However
> I
> > > still got highly skewed region distribution.
> > >
> > > I guess it's because of the StochasticLoadBalancer, can I assign
> > per-table
> > > balancer class in HBase?
> > >
> > >
> > > Jianshi
> > >
> > > On Mon, Sep 22, 2014 at 9:50 PM, Ted Yu <yuzhihong@gmail.com> wrote:
> > >
> > > > admin.setBalancerRunning() call should precede the call to
> > > > admin.balancer().
> > > >
> > > > You can inspect master log to see whether regions are being moved off
> > the
> > > > heavily loaded server.
> > > >
> > > > Cheers
> > > >
> > > > On Mon, Sep 22, 2014 at 1:42 AM, Jianshi Huang <
> > jianshi.huang@gmail.com>
> > > > wrote:
> > > >
> > > > > Hi Ted and others,
> > > > >
> > > > > I did the following after adding splits (without data) to my table,
> > > > however
> > > > > the region is still very imbalanced (one region server has 221
> > regions
> > > > and
> > > > > other 50 region servers have about 4~8 regions each).
> > > > >
> > > > >       admin.balancer()
> > > > >       admin.setBalancerRunning(true, true)
> > > > >
> > > > > The balancer class in my HBase cluster is
> > > > >
> > > > > org.apache.hadoop.hbase.master.balancer.StochasticLoadBalancer
> > > > >
> > > > > So, is this behavior expected? Can I assign different balancer
> class
> > to
> > > > my
> > > > > tables (I don't have HBase admin permission)? Which one should I
> use?
> > > > >
> > > > > I just want HBase to evenly distribute the regions even they don't
> > have
> > > > > data (that's the purpose of pre-split I think).
> > > > >
> > > > >
> > > > > Jianshi
> > > > >
> > > > >
> > > > > On Sat, Sep 6, 2014 at 12:45 AM, Ted Yu <yuzhihong@gmail.com>
> wrote:
> > > > >
> > > > > > Yes. See the following method in HBaseAdmin:
> > > > > >
> > > > > >   public boolean balancer()
> > > > > >
> > > > > >
> > > > > > On Fri, Sep 5, 2014 at 9:38 AM, Jianshi Huang <
> > > jianshi.huang@gmail.com
> > > > >
> > > > > > wrote:
> > > > > >
> > > > > > > Thanks Ted!
> > > > > > >
> > > > > > > Didn't know I still need to run the 'balancer' command.
> > > > > > >
> > > > > > > Is there a way to do it programmatically?
> > > > > > >
> > > > > > > Jianshi
> > > > > > >
> > > > > > >
> > > > > > >
> > > > > > > On Sat, Sep 6, 2014 at 12:29 AM, Ted Yu <yuzhihong@gmail.com>
> > > wrote:
> > > > > > >
> > > > > > > > After splitting the region, you may need to run balancer
to
> > > spread
> > > > > the
> > > > > > > new
> > > > > > > > regions out.
> > > > > > > >
> > > > > > > > Cheers
> > > > > > > >
> > > > > > > >
> > > > > > > > On Fri, Sep 5, 2014 at 9:25 AM, Jianshi Huang <
> > > > > jianshi.huang@gmail.com
> > > > > > >
> > > > > > > > wrote:
> > > > > > > >
> > > > > > > > > Hi Shahab,
> > > > > > > > >
> > > > > > > > > I see, that seems to be the right way...
> > > > > > > > >
> > > > > > > > >
> > > > > > > > > On Sat, Sep 6, 2014 at 12:21 AM, Shahab Yunus
<
> > > > > > shahab.yunus@gmail.com>
> > > > > > > > > wrote:
> > > > > > > > >
> > > > > > > > > > Shahab
> > > > > > > > >
> > > > > > > > >
> > > > > > > > >
> > > > > > > > >
> > > > > > > > >
> > > > > > > > > --
> > > > > > > > > Jianshi Huang
> > > > > > > > >
> > > > > > > > > LinkedIn: jianshi
> > > > > > > > > Twitter: @jshuang
> > > > > > > > > Github & Blog: http://huangjs.github.com/
> > > > > > > > >
> > > > > > > >
> > > > > > >
> > > > > > >
> > > > > > >
> > > > > > > --
> > > > > > > Jianshi Huang
> > > > > > >
> > > > > > > LinkedIn: jianshi
> > > > > > > Twitter: @jshuang
> > > > > > > Github & Blog: http://huangjs.github.com/
> > > > > > >
> > > > > >
> > > > >
> > > > >
> > > > >
> > > > > --
> > > > > Jianshi Huang
> > > > >
> > > > > LinkedIn: jianshi
> > > > > Twitter: @jshuang
> > > > > Github & Blog: http://huangjs.github.com/
> > > > >
> > > >
> > >
> > >
> > >
> > > --
> > > Jianshi Huang
> > >
> > > LinkedIn: jianshi
> > > Twitter: @jshuang
> > > Github & Blog: http://huangjs.github.com/
> > >
> >
>
>
>
> --
> Jianshi Huang
>
> LinkedIn: jianshi
> Twitter: @jshuang
> Github & Blog: http://huangjs.github.com/
>

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