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From "Pavel Yaskevich (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (CASSANDRA-2882) describe_ring should include datacenter/topology information
Date Thu, 08 Sep 2011 14:04:12 GMT

    [ https://issues.apache.org/jira/browse/CASSANDRA-2882?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13100334#comment-13100334
] 

Pavel Yaskevich commented on CASSANDRA-2882:
--------------------------------------------

Sorry I would like to see thrift auto-gen code removed from the patch especially because it's
C# code, I will run `ant gen-thrift-java` myself when needed.

> describe_ring should include datacenter/topology information
> ------------------------------------------------------------
>
>                 Key: CASSANDRA-2882
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-2882
>             Project: Cassandra
>          Issue Type: Improvement
>          Components: API, Core
>            Reporter: Mark Guzman
>            Assignee: Pavel Yaskevich
>            Priority: Minor
>              Labels: lhf
>             Fix For: 1.1
>
>         Attachments: 0001-adding-an-additional-parameter-to-the-TokenRange-res.patch,
0001-final-cleaned-up-2882-changes.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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