[ https://issues.apache.org/jira/browse/CASSANDRA-6012?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Jeremy Hanna updated CASSANDRA-6012: ------------------------------------ Labels: LWT (was: ) > CAS does not always correctly replay inProgress rounds > ------------------------------------------------------ > > Key: CASSANDRA-6012 > URL: https://issues.apache.org/jira/browse/CASSANDRA-6012 > Project: Cassandra > Issue Type: Bug > Reporter: Sylvain Lebresne > Assignee: Sylvain Lebresne > Priority: Major > Labels: LWT > Fix For: 2.0.1 > > Attachments: > 0001-Don-t-skip-paxos-old-round-replay-if-there-is-a-value-.txt > > > Paxos says that on receiving the result of a prepare from a quorum of > acceptors, the proposer should propose the value of the higher-number > proposal accepted amongst the ones returned by the acceptors, and only > propose his own value if no acceptor has send us back a previously accepted > value. > But in PrepareCallback we only keep the more recent inProgress commit > regardless of whether is has an update. Which means we could ignore a value > already accepted by some acceptors if any of the acceptor send us a more > recent ballot than the other acceptor but with no values. The net effect is > that we can mistakenly accept two different values for the same round. -- This message was sent by Atlassian JIRA (v7.6.3#76005) --------------------------------------------------------------------- To unsubscribe, e-mail: commits-unsubscr...@cassandra.apache.org For additional commands, e-mail: commits-h...@cassandra.apache.org