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https://issues.apache.org/jira/browse/CASSANDRA-3238?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13113687#comment-13113687
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Vijay commented on CASSANDRA-3238:
----------------------------------
Talked with the user and it seems like we will have to set
dynamic_snitch_badness_threshold=0.01 atleast. so far with that setting the
problem seem to go away.
> Issue with multi region ec2 and replication updates
> ---------------------------------------------------
>
> Key: CASSANDRA-3238
> URL: https://issues.apache.org/jira/browse/CASSANDRA-3238
> Project: Cassandra
> Issue Type: Bug
> Components: Core
> Affects Versions: 1.0.0
> Reporter: Nick Bailey
> Assignee: Vijay
> Priority: Minor
> Fix For: 1.0.0
>
>
> Using the Ec2MultiRegionSnitch and updating replication settings for a
> keyspace seems to cause some issues that require a rolling restart to fix.
> The following was observed when updating a keyspace from SimpleStrategy to
> NTS in a multi region environment:
> * All repairs would hang. Even repairs only against a keyspace that was not
> updated.
> * Reads at CL.ONE would start to go across region
> After a rolling restart of the cluster, repairs started working correctly
> again and reads stayed local to the region.
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