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From "Jeff Hodges (JIRA)" <>
Subject [jira] Commented: (CASSANDRA-197) Expose ring map to client for more direct access
Date Mon, 24 Aug 2009 22:31:59 GMT


Jeff Hodges commented on CASSANDRA-197:

I'm really hesitant about pushing JSON through a string. We're going to be using this extensively
in the hadoop code, why not just make it a real endpoint and lose the JSON library? I can
whip up a patch tonight. 

> Expose ring map to client for more direct access
> ------------------------------------------------
>                 Key: CASSANDRA-197
>                 URL:
>             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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