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From "Hudson (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (CASSANDRA-2882) describe_ring should include datacenter/topology information
Date Mon, 12 Sep 2011 20:25:10 GMT

    [ https://issues.apache.org/jira/browse/CASSANDRA-2882?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13103003#comment-13103003
] 

Hudson commented on CASSANDRA-2882:
-----------------------------------

Integrated in Cassandra #1102 (See [https://builds.apache.org/job/Cassandra/1102/])
    describe_ring should include datacenter/topology information
patch by Mark Guzman; reviewed by Pavel Yaskevich for CASSANDRA-2882

xedin : http://svn.apache.org/viewcvs.cgi/?root=Apache-SVN&view=rev&rev=1169870
Files : 
* /cassandra/trunk/CHANGES.txt
* /cassandra/trunk/interface/cassandra.thrift
* /cassandra/trunk/interface/thrift/gen-java/org/apache/cassandra/thrift/AuthenticationRequest.java
* /cassandra/trunk/interface/thrift/gen-java/org/apache/cassandra/thrift/Cassandra.java
* /cassandra/trunk/interface/thrift/gen-java/org/apache/cassandra/thrift/CfDef.java
* /cassandra/trunk/interface/thrift/gen-java/org/apache/cassandra/thrift/ColumnDef.java
* /cassandra/trunk/interface/thrift/gen-java/org/apache/cassandra/thrift/Constants.java
* /cassandra/trunk/interface/thrift/gen-java/org/apache/cassandra/thrift/CqlMetadata.java
* /cassandra/trunk/interface/thrift/gen-java/org/apache/cassandra/thrift/CqlResult.java
* /cassandra/trunk/interface/thrift/gen-java/org/apache/cassandra/thrift/CqlRow.java
* /cassandra/trunk/interface/thrift/gen-java/org/apache/cassandra/thrift/EndpointDetails.java
* /cassandra/trunk/interface/thrift/gen-java/org/apache/cassandra/thrift/KsDef.java
* /cassandra/trunk/interface/thrift/gen-java/org/apache/cassandra/thrift/TokenRange.java
* /cassandra/trunk/src/java/org/apache/cassandra/thrift/CassandraServer.java


> 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: Mark Guzman
>            Priority: Minor
>              Labels: lhf
>             Fix For: 1.1
>
>         Attachments: 0001-CASSANDRA-2882-feedback-changes.patch, 0001-CASSANDRA-2882-patch-w-o-generated-files.patch,
0001-CASSANDRA-2882-rebased.patch, 0001-added-the-host-addr-to-the-EndpointDetail-class.-det.patch,
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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