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From "Joel Knighton (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (CASSANDRA-10634) Materialized Views filter paired endpoints to local DC even when not using DC-aware replication
Date Thu, 05 Nov 2015 20:16:27 GMT

    [ https://issues.apache.org/jira/browse/CASSANDRA-10634?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14992385#comment-14992385
] 

Joel Knighton commented on CASSANDRA-10634:
-------------------------------------------

I've pushed a version with the requested changes [here|https://github.com/jkni/cassandra/commits/10634].

> Materialized Views filter paired endpoints to local DC even when not using DC-aware replication
> -----------------------------------------------------------------------------------------------
>
>                 Key: CASSANDRA-10634
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-10634
>             Project: Cassandra
>          Issue Type: Bug
>          Components: Coordination
>            Reporter: Joel Knighton
>            Assignee: Joel Knighton
>             Fix For: 3.0.0
>
>
> When calculating paired view replicas on MV writes, we filter out base and view replicas
that aren't in the local datacenter. 
> If we are using SimpleStrategy, this filtering is incorrect, since our replica placement
is not datacenter aware.
> We should behave the same as DC-aware consistency levels and only perform this datacenter-aware
filtering if the replication strategy is an instance of NetworkTopologyStrategy.



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