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From 吕鹏 <lvpengd...@gmail.com>
Subject Re: How to set region parameter?
Date Thu, 10 Nov 2011 02:25:38 GMT
Thanks a lot for you help.

But for question 2 and 3, the Apache book does not get give a direct
answer, specially question 2.


2011/11/10 Doug Meil <doug.meil@explorysmedical.com>

>
> Hi there-
>
> re:  #1
>
> http://hbase.apache.org/book.html#perf.configurations
>
> Regarding this, for the 0.90.x codebase the largest recommended region
> size is 4Gb.  The "20Gb" number in the book now was for a cluster running
> which was running Hfile v2 format, which is different than what is in
> 0.90.x.  I will update the book this weekend.
>
> re:  #2 and #3
>
> See http://hbase.apache.org/book.html#rowkey.design
>
>
>
> On 11/9/11 1:32 AM, "吕鹏" <lvpengdlut@gmail.com> wrote:
>
> >I have three question:
> >1 How large a region will be, if i want to use map-reduce to analyze the
> >data in hbase table.
> >2 How many region in a region server is suitable?
> >3 If the rowkey in my application is not dispersive such as md5 or hash,
> >how can i control the hotspot of region split?
> >
> >thx
>
>

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