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From "Mark Guzman (JIRA)" <>
Subject [jira] [Updated] (CASSANDRA-2882) describe_ring should include datacenter/topology information
Date Thu, 08 Sep 2011 06:31:09 GMT


Mark Guzman updated CASSANDRA-2882:

    Attachment: 0001-adding-an-additional-parameter-to-the-TokenRange-res.patch

v1 patch adding datacenter info and port where possible. needs some cleanup and review.

> describe_ring should include datacenter/topology information
> ------------------------------------------------------------
>                 Key: CASSANDRA-2882
>                 URL:
>             Project: Cassandra
>          Issue Type: Improvement
>          Components: API, Core
>            Reporter: Mark Guzman
>            Assignee: Pavel Yaskevich
>            Priority: Minor
>              Labels: lhf
>             Fix For: 1.0
>         Attachments: 0001-adding-an-additional-parameter-to-the-TokenRange-res.patch
> describe_ring is great for getting a list of nodes in the cluster, but it doesn't provide
any information about the network topology which prevents it's use in a multi-dc setup. It
would be nice if we added another list to the TokenRange object containing the DC information.

> Optimally I could have ask any Cassandra node for this information and on the client-side
prefer local nodes but be able to fail to remote nodes without requiring another lookup.

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