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https://issues.apache.org/jira/browse/CASSANDRA-7296?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15562992#comment-15562992
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Jeremiah Jordan commented on CASSANDRA-7296:
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Besides what the client API looks like how would people expect this to behave
if the coordinator is not a replica? That decision may also affect how the API
should look from a "least surprises" stand point. If the CL was "THIS_ONE" I
would expect no data or possibly an UnavailableException (IIRC this is what you
get from LOCAL_ in a DC with no replicas). If it was a flag called "prefer
coordinator" of something then I would expect the request to be coordinated to
replica nodes if the coordinator wasn't one.
> Add CL.COORDINATOR_ONLY
> -----------------------
>
> Key: CASSANDRA-7296
> URL: https://issues.apache.org/jira/browse/CASSANDRA-7296
> Project: Cassandra
> Issue Type: Improvement
> Reporter: Tupshin Harper
>
> For reasons such as CASSANDRA-6340 and similar, it would be nice to have a
> read that never gets distributed, and only works if the coordinator you are
> talking to is an owner of the row.
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