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Date: Wed, 30 Sep 2009 11:45:31 +0800
Message-ID: <382e1efc0909292045v1418d838l275e4279826831a8@mail.gmail.com>
Subject: Re: Some regions locked
From: Yabo-Arber Xu <arber.research@gmail.com>
To: hbase-user@hadoop.apache.org
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Thanks for your prompt reply. Just now I have restarted the whole
cluster to continue my testing, and I will do as you suggested when
the lock repeats.

Best,
Arber

On Wed, Sep 30, 2009 at 11:31 AM, stack <stack@duboce.net> wrote:
> Do you know the region? =A0If so, find which server by grepping region in
> master log. =A0Once 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 =A0a 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? =A0What do your programs do? =A0Do they take out=
 a row
>> > lock? =A0They do not free it? =A0Maybe 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 region=
s
>> >> was suspended immediately ( in the call of getScanner ).
>> >>
>> >> Anybody have ideas what might be the causes?
>> >>
>> >> Best,
>> >> Arber
>> >>
>> >
>>
>