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https://issues.apache.org/jira/browse/CASSANDRA-6495?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13853679#comment-13853679
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sankalp kohli commented on CASSANDRA-6495:
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OK. Let me do that
> LOCAL_SERIAL use QUORAM consistency level to validate expected columns
> -----------------------------------------------------------------------
>
> Key: CASSANDRA-6495
> URL: https://issues.apache.org/jira/browse/CASSANDRA-6495
> Project: Cassandra
> Issue Type: Bug
> Components: Core
> Reporter: sankalp kohli
> Assignee: sankalp kohli
> Priority: Minor
>
> If CAS is done at LOCAL_SERIAL consistency level, only the nodes from the
> local data center should be involved.
> Here we are using QUORAM to validate the expected columns. This will require
> nodes from more than one DC.
> We should use LOCAL_QUORAM here when CAS is done at LOCAL_SERIAL.
> Also if we have 2 DCs with DC1:3,DC2:3, a single DC down will cause CAS to
> not work even for LOCAL_SERIAL.
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