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https://issues.apache.org/jira/browse/CASSANDRA-952?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12866753#action_12866753
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Jonathan Ellis commented on CASSANDRA-952:
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patch 01 cleans out callback purging from WriteResponseHandler (leaving
ExpiringMap to clean it out automatically).
02 adds the dcquorum changes, extracting AbstractWRH so the DQSyncRH doesn't
have to subclass WRH which is a poor fit, and cleans up the WRH heirarchy.
> 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:
> 0001-clean-out-callback-purging-from-truncate-writerh.txt,
> 0002-dcquorum-fixes.txt, 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, 952-v5.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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