Hi Anthony, cut back to 3 ZooKeeper servers in the ZK ensemble. The
quorum uses "majority rule", so 4 servers is actually worse than 3
(typically you would go to 5 servers as the next step up from 3).
Patrick
On 05/31/2010 07:49 PM, Anthony Ikeda wrote:
I’m in the process of configuring our machines for a HBase deployment.
Based upon the documentation I’ve read so far, a ZooKeeper Quorum is
required with Hadoop running (of course).
However, to what degree do I need to separate the servers?
At this point I have a total of 12 servers with the possible configuration:
4 x Hadoop (1 Master, 3 Slaves)
4 x HBase
4 x ZooKeeper
Should the HBase be installed with the Hadoop instances?
i.e.:
8 x Hadoop and HBase (giving me 8 instances of Hadoop and HBase as
opposed to 4 of each)
4 x ZooKeeper
Or is it typical practice for HBase to be installed on an environment
separate to Hadoop?
Anthony Ikeda
Java Analyst/Programmer
Cardlink Services Limited
Level 4, 3 Rider Boulevard
Rhodes NSW 2138
Web: www.cardlink.com.au <http://www.cardlink.com.au> | Tel: + 61 2 9646
9221 | Fax: + 61 2 9646 9283
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