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From Mohammad Tariq <donta...@gmail.com>
Subject Re: how many severs in a hbase cluster
Date Sat, 22 Jun 2013 14:37:29 GMT
Oh, you already have heavyweight's input :).

Thanks JM.

Warm Regards,

On Sat, Jun 22, 2013 at 8:05 PM, Mohammad Tariq <dontariq@gmail.com> wrote:

> Hello there,
>         IMHO, 5-8 servers are sufficient enough to start with. But it's
> all relative to the data you have and the intensity of your reads/writes.
> You should have different strategies though, based on whether it's 'read'
> or 'write'. You actually can't define 'big' in absolute terms. My cluster
> might be big for me, but for someone else it might still be not big enough
> or for someone it might be very big. Long story short it depends on your
> needs. If you are able to achieve your goal with 5-8 RSs, then having more
> machines will be a wastage, I think.
> But you should always keep in mind that HBase is kinda greedy when it
> comes to memory. For a decent load 4G is sufficient, IMHO. But it again
> depends on operations you are gonna perform. If you have large clusters
> where you are planning to run MR jobs frequently you are better off with
> additional 2G.
> Warm Regards,
> Tariq
> cloudfront.blogspot.com
> On Sat, Jun 22, 2013 at 7:51 PM, myhbase <myhbase@126.com> wrote:
>> Hello All,
>> I learn hbase almost from papers and books, according to my
>> understanding, HBase is the kind of architecture which is more appliable
>> to a big cluster. We should have many HDFS nodes, and many HBase(region
>> server) nodes. If we only have several severs(5-8), it seems hbase is
>> not a good choice, please correct me if I am wrong. In addition, how
>> many nodes usually we can start to consider the hbase solution and how
>> about the physic mem size and other hardware resource in each node, any
>> reference document or cases? Thanks.
>> --Ning

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