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https://issues.apache.org/jira/browse/AMQ-1958?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13254807#comment-13254807
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Johno Crawford commented on AMQ-1958:
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A lot of talk over @ AMQ-3654 . Can we close this ticket as duplicate?
> JDBC master/slave deadlock when connection is lost
> --------------------------------------------------
>
> Key: AMQ-1958
> URL: https://issues.apache.org/jira/browse/AMQ-1958
> Project: ActiveMQ
> Issue Type: Bug
> Components: Broker, Message Store
> Affects Versions: 4.1.2, 5.0.0, 5.1.0, 5.2.0
> Environment: oracle 10, mysql 5
> Reporter: Guy Veraghtert
> Fix For: NEEDS_REVIEWED
>
>
> In a pure JDBC failover scenario with one master and one slave: when the
> master loses its network connection to the database, the lock in the database
> will not be released. As such the slave will not know that the master isn't
> able to perform its work and it will continue to attempt to acquire a lock
> (which will never be released), when the master is restarted (after its
> connection is restored), it will become slave too, ending up with two slaves.
> This behavior was encountered on Oracle 10 and Mysql 5.
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