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Date: Fri, 30 Apr 2010 13:12:18 -0400 (EDT)
From: "Jonathan Ellis (JIRA)" <jira@apache.org>
To: commits@cassandra.apache.org
Subject: [jira] Commented: (CASSANDRA-952) DC Quorum broken @ trunk
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    [ https://issues.apache.org/jira/browse/CASSANDRA-952?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12862750#action_12862750 ] 

Jonathan Ellis commented on CASSANDRA-952:
------------------------------------------

It looks like this is mixing code from CASSANDRA-967 in.  Let's do these one at a time, or we're more likely to introduce bugs.

> DC Quorum broken @ trunk
> ------------------------
>
>                 Key: CASSANDRA-952
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-952
>             Project: Cassandra
>          Issue Type: Bug
>          Components: Core
>    Affects Versions: 0.6
>         Environment: Linux, Cassandra
>            Reporter: Vijay
>            Assignee: Vijay
>            Priority: Minor
>             Fix For: 0.7, 0.8
>
>         Attachments: 952-Canges_To_Stategy_V002.txt, 952-Change_BlockFor.txt, 952-Changes_To_ResponseHandler_v002.txt, 952-Fix_Refactor_DCStatergy.txt, 952-v3.txt, 952-v4.txt, DC-Config.xml
>
>
> Currently DCQuorum is broken in trunk, Suggesting the following fix... 
> Write to DC's
> 1) Move determineBlockFor(int expandedTargets, ConsistencyLevel consistency_level) to AbstractEndpointSnitch
> 2) Add the same to support DC Quorum in DatacenterShardStategy
> Read to DC's
> 1) find suitable nodes was a list which was returning a list of local DC's earlier but now it is just one node and MD is been sent by other nodes. Need to have an option to even avoid MD from other DC's?

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