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From Guy Moshkowich <guy.moshkow...@gmail.com>
Subject Re: how to identify servers in zookeeper ensemble
Date Fri, 26 Jun 2015 10:37:48 GMT
Hi Shushant,
Ensemble is the set of all ZooKeeper servers.
quorum is a subset of an ensemble that contains more than half of the
servers (more accurate servers that are not of type 'observer') which are
required for ZooKeeper service to be available.
>From http://hbase.apache.org/0.94/book/zookeeper.html:
"You must at least list the ensemble servers in hbase-site.xml using the
hbase.zookeeper.quorum property."
i.e., hbase.zookeeper.quorum is the list of ensemble (the parameter name is
you can't list a quorum as it this list is decided in real time from all
none-observer servers that are up and connected to each other.
Hope this helps.

On Fri, Jun 26, 2015 at 11:26 AM, Shushant Arora <shushantarora09@gmail.com>

> Hi
> Can I get to know list of servers in zookeeper ensemble in my cluster.
> And what is dif between zookeeper quorum and ensemble. And is quorum is
> just majority of servers then how can it be hard coded list of server in
> hbase,In hbase we specify quorum as hbase.zookeeper.quorum a list of
> servers:port.
> Can we predefined servers which will always be part of quorum?

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