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Date: Tue, 26 Nov 2013 14:28:02 -0800 (PST)
From: ms209495 <jezdnia@gmail.com>
To: zookeeper-user@hadoop.apache.org
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Subject: Re: Ensure there is one master
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Thanks for the reply. I want to clarify one thing.
I think about a System of 20 nodes, that uses ZooKeeper of 3 nodes.
I think about master election among these 20 nodes, that do not run
consensus, but they use zookeeper service for master election.
I used 'leader' term for a leeder in Zookeeper (among 3 nodes), and 'master'
term for master in the System (20 nodes).
Solution is described here:
http://zookeeper.apache.org/doc/trunk/recipes.html#sc_leaderElection (I
would name it 'master' election, not 'leader' election), but I doubt if it
works reliable without additional timing assumptions as I described in my
previous post.
Please consider my previous post in the context of the System that uses
Zookeeper (not ZooKeeper itself).


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