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Posted to commits@cassandra.apache.org by "Jonathan Ellis (JIRA)" <ji...@apache.org> on 2014/06/04 19:05:01 UTC
[jira] [Commented] (CASSANDRA-6246) EPaxos
[ https://issues.apache.org/jira/browse/CASSANDRA-6246?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14017865#comment-14017865 ]
Jonathan Ellis commented on CASSANDRA-6246:
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Good overview: http://blakeeggleston.com/egalitarian-paxos-explained.html
> 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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