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From "Slava Gorelik" <slava.gore...@gmail.com>
Subject Re: Regionserver fails to serve region
Date Tue, 04 Nov 2008 21:16:40 GMT
One more regarding the blockCache, how changes in store files (as i
understand those are MapFiles) are reflected on client side cache. If we are
talking about more than one client that doing a changes ? If each client has
different part of the MapFile ? or something else ?
Best Regards.

On Tue, Nov 4, 2008 at 11:10 PM, Slava Gorelik <slava.gorelik@gmail.com>wrote:

> I can try to reproduce it again, but before this i would like to send you a
> logs.
> Best Regards.
>
>
> On Tue, Nov 4, 2008 at 10:05 PM, stack <stack@duboce.net> wrote:
>
>> Then we should try and figure if there is an issue in the balancer, or
>> maybe there is something missing if we are not doing a big upload in a
>> manner that balances the upload across HDFS?
>> St.Ack
>>
>> Slava Gorelik wrote:
>>
>>> Sure, i'll arrange logs tomorrow.About balancer, to wait when the massive
>>> work is finished is good in testing environment but in production it's
>>> not
>>> relevant :-)
>>>
>>> Best Regards.
>>>
>>> On Tue, Nov 4, 2008 at 9:48 PM, stack <stack@duboce.net> wrote:
>>>
>>>
>>>
>>>> Slava Gorelik wrote:
>>>>
>>>>
>>>>
>>>>> Hi.Regarding the failure of new block creation - i failed to run hbase
>>>>> till
>>>>> i reformatted HDFS again.
>>>>>
>>>>>
>>>>>
>>>>>
>>>> I'd be interested in the logs.
>>>>
>>>>  I just wandering if hadoop re balancing is necessary? Will it balance
>>>>
>>>>
>>>>> itself
>>>>> ? As i understand hadoop balancer is moving data between data nodes,
>>>>> but
>>>>> in
>>>>> my case this is during massive (8 clients just adding a records - about
>>>>> 400
>>>>> requests for all region servers - 6). So, is it good idea to run
>>>>> balancer during heavy load ?
>>>>>
>>>>>
>>>>>
>>>>>
>>>> I don't have sufficient experience running the balancer.  Perhaps wait
>>>> till
>>>> upload is done, then run it?
>>>>
>>>> St.Ack
>>>>
>>>>
>>>>
>>>
>>>
>>>
>>
>>
>

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