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From "Aleksey Yeschenko (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (CASSANDRA-5797) DC-local CAS
Date Fri, 26 Jul 2013 15:31:50 GMT

    [ https://issues.apache.org/jira/browse/CASSANDRA-5797?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13720883#comment-13720883
] 

Aleksey Yeschenko commented on CASSANDRA-5797:
----------------------------------------------

QueryOptions.Codec.encode() writes flags before writing the CL - should be reversed. Otherwise
LGTM.
                
> 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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