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https://issues.apache.org/jira/browse/AMQ-5080?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14128468#comment-14128468
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Gary Tully commented on AMQ-5080:
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@Fer that refinement will make 5.11
> RAR - missing messages on master slave failover
> -----------------------------------------------
>
> Key: AMQ-5080
> URL: https://issues.apache.org/jira/browse/AMQ-5080
> Project: ActiveMQ
> Issue Type: Bug
> Components: JCA Container
> Affects Versions: 5.9.0
> Reporter: Gary Tully
> Assignee: Gary Tully
> Labels: 2PC, MDB, RAR, XA
> Fix For: 5.10.0, 5.11.0
>
>
> With repeated failover between master and slave and mdb that consumers from A
> and sends to B in a transaction we can -
> a) loose some messages acked as duplicates in error
> b) duplicate some messages when acks are lost in error but don't force a
> rollback.
> A long running test that consumers/produces 20k messages with a failover
> every 200 messages eventually shows up various problems. With XA recovery and
> async completion - there are many code path variations.
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