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From stack <st...@duboce.net>
Subject Re: Some regions locked
Date Wed, 30 Sep 2009 03:31:28 GMT
Do you know the region?  If so, find which server by grepping region in
master log.  Once you have that, thread dump the locked up regionserver.
Make an issue and attach the thread dump then lets chat on it over there?
Thanks,
St.Ack

On Tue, Sep 29, 2009 at 8:26 PM, Yabo-Arber Xu <arber.research@gmail.com>wrote:

> Seems not a row locked, but the whole region. As any data request to a
> particular block was suspended. Same thing happened on the other two
> tables. Likely  a dead lock happened somewhere, but i have no clue
> where to find it...
>
> Best,
> Arber
>
>
>
> On Wed, Sep 30, 2009 at 11:19 AM, stack <stack@duboce.net> wrote:
> > So, a row was locked?  What do your programs do?  Do they take out a row
> > lock?  They do not free it?  Maybe an error?
> > St.Ack
> >
> > On Tue, Sep 29, 2009 at 6:59 PM, Yabo-Arber Xu <yxu@summba.com> wrote:
> >
> >> Hi there:
> >>
> >> I was running a shell ( in parallel on multiple machines) that
> >> encloses a few programs accessing HBase. At some point all the
> >> programs are all suspended, and later I found the reason was because
> >> some region in HBase is locked. Any program that accesses that regions
> >> was suspended immediately ( in the call of getScanner ).
> >>
> >> Anybody have ideas what might be the causes?
> >>
> >> Best,
> >> Arber
> >>
> >
>

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