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From "David Alves (JIRA)" <>
Subject [jira] [Commented] (CASSANDRA-3047) implementations of IPartitioner.describeOwnership() are not DC aware
Date Mon, 18 Jun 2012 19:42:42 GMT


David Alves commented on CASSANDRA-3047:

It was supposed to apply to trunk, but was failing mainly because it was built against github's
skewed version of trunk.
Tested to apply to current trunk.
> implementations of IPartitioner.describeOwnership() are not DC aware
> --------------------------------------------------------------------
>                 Key: CASSANDRA-3047
>                 URL:
>             Project: Cassandra
>          Issue Type: Improvement
>          Components: Tools
>            Reporter: Aaron Morton
>            Assignee: David Alves
>            Priority: Trivial
>             Fix For: 1.1.2
>         Attachments: CASSANDRA-3047.patch, CASSANDRA-3047.patch, CASSANDRA-3047.patch,
> see
> When a cluster the multiple rings approach to tokens the output from nodetool ring is
> When it uses the interleaved token approach (e.g. dc1, dc2, dc1, dc2) it will be correct.

> It's a bit hacky but could we special case (RP) tokens that are off by 1 and calculate
the ownership per dc ? I guess another approach would be to add some parameters so the partitioner
can be told about the token assignment strategy.  

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