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From "Jonathan Ellis (JIRA)" <j...@apache.org>
Subject [jira] Updated: (CASSANDRA-952) DC Quorum broken @ trunk
Date Mon, 17 May 2010 14:29:56 GMT

     [ https://issues.apache.org/jira/browse/CASSANDRA-952?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Jonathan Ellis updated CASSANDRA-952:
-------------------------------------

    Attachment: 952-v3.txt

v3 attached is the same as v2 w/ (unintentional?) breakages to TruncateResponseHandler reverted
and formatting fixed.

the new test needs to work with normal propertyfilesnitch, XMLFS is not going back in.

> 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-v2.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-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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