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https://issues.apache.org/jira/browse/CASSANDRA-197?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12747117#action_12747117
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Jun Rao commented on CASSANDRA-197:
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Well, to return an endpoint map directly, we need to add a new thrift api.
Also, to use RingCache with Hadoop, you already need to make the cassandra jar
and all its dependent jars available to Hadoop, so adding another json library
doesn't seem like a bit deal.
> Expose ring map to client for more direct access
> ------------------------------------------------
>
> Key: CASSANDRA-197
> URL: https://issues.apache.org/jira/browse/CASSANDRA-197
> Project: Cassandra
> Issue Type: New Feature
> Components: Core
> Reporter: Jun Rao
> Assignee: Jun Rao
> Attachments: flexjson.jar, issue197.patchv1, patch197.v2, patch197.v3
>
>
> For certain applications, it would be nice if a read is sent to a node that
> owns the data locally. This saves an extra network hop. To do that, a client
> will need to cache the ring map and use it to figure out the nodes owning a
> row.
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