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From "Jonathan Ellis (JIRA)" <j...@apache.org>
Subject [jira] [Created] (CASSANDRA-6246) EPaxos
Date Sat, 26 Oct 2013 03:17:30 GMT
Jonathan Ellis created CASSANDRA-6246:
-----------------------------------------

             Summary: EPaxos
                 Key: CASSANDRA-6246
                 URL: https://issues.apache.org/jira/browse/CASSANDRA-6246
             Project: Cassandra
          Issue Type: Improvement
          Components: Core
            Reporter: Jonathan Ellis
            Priority: Minor


One reason we haven't optimized our Paxos implementation with Multi-paxos is that Multi-paxos
requires leader election and hence, a period of unavailability when the leader dies.

EPaxos is a Paxos variant that requires (1) less messages than multi-paxos, (2) is particularly
useful across multiple datacenters, and (3) allows any node to act as coordinator: http://sigops.org/sosp/sosp13/papers/p358-moraru.pdf

However, there is substantial additional complexity involved if we choose to implement it.



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