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https://issues.apache.org/jira/browse/CASSANDRA-8640?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Jeremy Hanna updated CASSANDRA-8640:
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Labels: LWT qa-resolved (was: qa-resolved)
> Paxos requires all nodes for CAS
> --------------------------------
>
> Key: CASSANDRA-8640
> URL: https://issues.apache.org/jira/browse/CASSANDRA-8640
> Project: Cassandra
> Issue Type: Bug
> Reporter: Anthony Cozzie
> Assignee: Anthony Cozzie
> Priority: Major
> Labels: LWT, qa-resolved
> Fix For: 2.0.12, 2.1.3
>
> Attachments: 0001-Fix-parentheses-bug-in-Paxos.patch,
> 0001-Fix-quorum-required-nodes-calculation-for-Paxos.patch
>
>
> In C* 2.1,
> {code}
> int requiredParticipants = participants + 1 / 2; // See CASSANDRA-833
> {code}
> Will always return participants because of operator precedence. I am not
> sure just adding parentheses will fix the problem, though, as the original
> code differentiated between pending and natural endpoints.
> {code}
> int requiredParticipants = pendingEndpoints.size() + 1 +
> naturalEndpoints.size() / 2; // See CASSANDRA-833
> {code}
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