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From Bradford Stephens <bradfordsteph...@gmail.com>
Subject Re: HBase Write to Regionservers behavior
Date Fri, 12 Jun 2009 05:19:53 GMT
I meant, here 'till Midnight :) thanks!

On Thu, Jun 11, 2009 at 10:19 PM, Bradford
Stephens<bradfordstephens@gmail.com> wrote:
> That actually make a lot of sense. Thanks, awesome people! Me and the
> dev team are here to get Katta + HBase to play together, and it's
> looking pretty nice.
>
> On Thu, Jun 11, 2009 at 9:47 PM, stack<stack@duboce.net> wrote:
>> On Thu, Jun 11, 2009 at 6:10 PM, Bradford Stephens <
>> bradfordstephens@gmail.com> wrote:
>>
>>>
>>> What I'm noticing is that it's writing to mostly one or two regions on
>>> one box at a time, even though I have 7 reducers running. Monitoring
>>> everything with dstat -v, I notice that only 2 of my servers are doing
>>> much. These boxes have very low CPU idling, and high disk output (a
>>> few GB a minute).
>>>
>>
>>
>> How many regions in your table?
>>
>> At first, there is one.  All reducers will go against it.   When it splits,
>> then two regions field the 7 reducers and so on.
>>
>> You can manually split regions from the command-line.  See if that helps:
>>
>> hbase> split_region 'REGIONNAME'
>>
>> (IIRC -- type 'tools' in shell for help on the admin facilities).
>>
>> St.Ack
>>
>

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