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https://issues.apache.org/jira/browse/CASSANDRA-1292?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12893605#action_12893605
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Hudson commented on CASSANDRA-1292:
-----------------------------------

Integrated in Cassandra #503 (See 
[http://hudson.zones.apache.org/hudson/job/Cassandra/503/])
    run thrift and jmx migrations on migration stage. patch by gdusbabek, 
reviewed by stuhood. CASSANDRA-1292


> Multiple migrations might run at once
> -------------------------------------
>
>                 Key: CASSANDRA-1292
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-1292
>             Project: Cassandra
>          Issue Type: Bug
>            Reporter: Stu Hood
>            Assignee: Gary Dusbabek
>            Priority: Critical
>             Fix For: 0.7 beta 1
>
>         Attachments: 
> 0001-run-thrift-and-jmx-migrations-on-to-migration-stage.patch
>
>
> The service.MigrationManager class manages a MIGRATION_STAGE where nodes 
> should execute db.migration.Migration instances.
> The problem is that the node that a client connects to via Thrift or Avro 
> initiates the migration in their client thread (calls migration.apply). 
> Instead, the Thrift and Avro clients should ensure that the migration occurs 
> in MIGRATION_STAGE, and should block until the migration is applied by the 
> stage.

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