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Posted to user@hbase.apache.org by Joseph Coleman <jo...@infinitecampus.com> on 2011/02/03 21:22:18 UTC

Setup Question/Recommendation

 1.
I posted a question a couple days ago about raid configuration for Hadoop and the answer is JBOD however, once you setup that up and you are going through your linux install what volume formatting do you select? ext3/4 lvm?
 2.  If I am looking at having a 10+ node data/region server cluster and a 3 node zookeeper cluster, what is the max Master Nodes I can have? If only one what happens if it dies does one of the slave data nodes take on the role of master?

Thanks in advance I appreciate everyones help and recommendations.
Joe

Re: Setup Question/Recommendation

Posted by Jean-Daniel Cryans <jd...@apache.org>.

Inline.

J-D

>  1.
> I posted a question a couple days ago about raid configuration for Hadoop and the answer is JBOD however, once you setup that up and you are going through your linux install what volume formatting do you select? ext3/4 lvm?

ext4 seems to be the new favorite, before that xfs was recommended.

>  2.  If I am looking at having a 10+ node data/region server cluster and a 3 node zookeeper cluster, what is the max Master Nodes I can have? If only one what happens if it dies does one of the slave data nodes take on the role of master?

If you have a single (rather small) cluster, you don't need a highly
available zookeeper since the Namenode will be your single point of
failure. Stack the Namenode, HMaster, and a ZK server on one node, and
use the rest of your nodes as slaves.