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From "Jeremy Hanna (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (CASSANDRA-1263) Push replication factor down to the replication strategy
Date Tue, 29 Mar 2011 22:43:06 GMT

    [ https://issues.apache.org/jira/browse/CASSANDRA-1263?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13012757#comment-13012757
] 

Jeremy Hanna commented on CASSANDRA-1263:
-----------------------------------------

Btw - Jon - how extensively did you test this?  I wonder if something like RF + Strategy could
be something that could be handled in a distributed test.

> Push replication factor down to the replication strategy
> --------------------------------------------------------
>
>                 Key: CASSANDRA-1263
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-1263
>             Project: Cassandra
>          Issue Type: Task
>          Components: Core
>            Reporter: Jeremy Hanna
>            Assignee: Jon Hermes
>            Priority: Minor
>             Fix For: 0.8
>
>         Attachments: 1263-2.txt, 1263-3.txt, 1263-incomplete.txt, 1263.txt
>
>   Original Estimate: 8h
>  Remaining Estimate: 8h
>
> Currently the replication factor is in the keyspace metadata.  As we've added the datacenter
shard strategy, the replication factor becomes more computed by the replication strategy.
 It seems reasonable to therefore push the replication factor for the keyspace down to the
replication strategy so that it can be handled in one place.
> This adds on the work being done in CASSANDRA-1066 since that ticket will make the replication
strategy a member variable of keyspace metadata instead of just a quasi singleton giving the
replication strategy state for each keyspace.  That makes it able to have the replication
factor.

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