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From Fernando Padilla <f...@alum.mit.edu>
Subject Re: hbase/zookeeper
Date Wed, 15 Jul 2009 05:32:43 GMT
The reason I ask, is that I'm planning on setting up a small HBase 
cluster in ec2..

having 3 to 5 instances just for zookeeper, while having only 3 to 5 
instances for Hbase.. it sounds lop-sided. :)

Does anyone here have any experience with HBase in EC2?

Ryan Rawson wrote:
> I run my ZK quorum on my regionservers, but I also have 16 GB ram per
> regionserver.  I used to run 1gb, and never had problems. Now with
> hbase managing the quorum I have 5gb ram, and its probalby over kill
> but better save than sorry.
> On Tue, Jul 14, 2009 at 6:07 PM, Nitay<nitayj@gmail.com> wrote:
>> Hi Fernando,
>> It is recommended that you run ZooKeeper separate from the Region Servers.
>> On the memory side, our use of ZooKeeper in terms of data stored is minimal
>> currently. However you definitely don't want it to swap and you want to be
>> able to handle a large number of connections. A safe value would be
>> something like 1GB.
>> -n
>> On Tue, Jul 14, 2009 at 2:58 PM, Fernando Padilla <fern@alum.mit.edu> wrote:
>>> So.. what's the recommendation for zookeeper?
>>> should I run zookeeper nodes on the same region servers?
>>> should I run zookeeper nodes external to the region servers?
>>> how much memory should I give zookeeper, if it's just used for hbase?

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