[jira] Updated: (CASSANDRA-952) DC Quorum broken @ trunk

["Vijay (JIRA)" <ji...@apache.org>]

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

Vijay updated CASSANDRA-952:
----------------------------

    Attachment: 952-v5.txt
                DC-Config.xml

I have attached the changes, Please note that we have to change a bit of logic in rangeslice in order to remove blockFor for from the SP, IF you think it is unnecessary, i put blockFor for now and add a depreciated annotation on it (by doing this i can leave the rangeslice untouched).

> 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, 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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