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Posted to commits@cassandra.apache.org by "Andy Chen (JIRA)" <ji...@apache.org> on 2016/02/23 21:06:18 UTC

[jira] [Created] (CASSANDRA-11219) Some Paxos issues

Andy Chen created CASSANDRA-11219:
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             Summary: Some Paxos issues
                 Key: CASSANDRA-11219
                 URL: https://issues.apache.org/jira/browse/CASSANDRA-11219
             Project: Cassandra
          Issue Type: Bug
          Components: Core
            Reporter: Andy Chen


Two issues,
1. ‘Raw Paxos' without Single Leader may result in non-progress, though waiting and retry may solve part of the problem, but cannot be proven that it can make progress.
2. learning issue, mostRecentCommit may not sufficient for a learner to catch up, such as node A, B and C, C is down, while A and B done with two Commits, c1, and c2. now when C is up, only c2 could be learned by C, since update is based on row changes (according to my understanding), data may inconsistent due to this



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