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From "Gary Dusbabek (JIRA)" <j...@apache.org>
Subject [jira] Updated: (CASSANDRA-1292) Multiple migrations might run at once
Date Wed, 28 Jul 2010 16:12:19 GMT

     [ https://issues.apache.org/jira/browse/CASSANDRA-1292?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Gary Dusbabek updated CASSANDRA-1292:
-------------------------------------

    Attachment: 0001-run-thrift-and-jmx-migrations-on-to-migration-stage.patch

> 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: 0.7.0
>
>         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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