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From "Brandon Williams (JIRA)" <>
Subject [jira] [Commented] (CASSANDRA-3238) Issue with multi region ec2 and replication updates
Date Thu, 22 Sep 2011 10:37:26 GMT


Brandon Williams commented on CASSANDRA-3238:

It sounds to me like something that needs to call ARS.clearEndpointCache isn't doing so.

> Issue with multi region ec2 and replication updates
> ---------------------------------------------------
>                 Key: CASSANDRA-3238
>                 URL:
>             Project: Cassandra
>          Issue Type: Bug
>    Affects Versions: 1.0.0
>            Reporter: Nick Bailey
>            Assignee: Vijay
>             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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