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https://issues.apache.org/jira/browse/CASSANDRA-5797?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13720820#comment-13720820
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Jonathan Ellis commented on CASSANDRA-5797:
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+1 (mostly looked at patch 2)
Nit: rename isSameDCThan to isSameDCAs, or maybe better sameDCPredicateFor
(since "is" implies it's doing a boolean evaluation)
> DC-local CAS
> ------------
>
> Key: CASSANDRA-5797
> URL: https://issues.apache.org/jira/browse/CASSANDRA-5797
> Project: Cassandra
> Issue Type: Bug
> Components: API
> Affects Versions: 2.0 beta 1
> Reporter: Jonathan Ellis
> Assignee: Sylvain Lebresne
> Priority: Minor
> Fix For: 2.0 rc1
>
> Attachments: 0001-Thrift-generated-files.txt,
> 0002-Add-LOCAL_SERIAL-CL.txt, 0003-CQL-and-native-protocol-changes.txt
>
>
> For two-datacenter deployments where the second DC is strictly for disaster
> failover, it would be useful to restrict CAS to a single DC to avoid cross-DC
> round trips.
> (This would require manually truncating {{system.paxos}} when failing over.)
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