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From Qiang Tian <tian...@gmail.com>
Subject Re: single RegionServer stuck, causing cluster to hang
Date Sun, 24 Aug 2014 04:04:34 GMT
Hi  Johannes,
Do you use endpoint / coprocessor stuff?
thanks.


On Sun, Aug 24, 2014 at 11:51 AM, Qiang Tian <tianq01@gmail.com> wrote:

> Hi Stack,
> I think you are right. the multiple queue change was introduced by
> HBASE-11355(0.98.4). if there is only 1 queue, the stuck will not happen.
> some handlers are gone but still some left to service the request(all
> handlers gone looks a rare case)...
> so the problem might have been there for some time, the change just
> exposes it.
>
>
>
> On Sun, Aug 24, 2014 at 7:51 AM, Stack <stack@duboce.net> wrote:
>
>> On Sat, Aug 23, 2014 at 4:06 PM, Stack <stack@duboce.net> wrote:
>>
>> > ...
>> > If you were looking for something to try, set
>> hbase.ipc.server.callqueue.handler.factor
>> > to 0.  Multiple queues is what is new here. It should not make a
>> difference
>> > but...
>> >
>> >
>> Hmm. Ignore above I'd say.  I can't see how it would trigger this issue.
>> Let me make a patch to give us more info and will have the handler keep
>> going....
>>
>> St.Ack
>>
>
>

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