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https://issues.apache.org/activemq/browse/AMQ-1488?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Rob Davies resolved AMQ-1488.
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Fix Version/s: 5.1.0
Resolution: Fixed
Fixed by svn revision 646401
> Bug in FailoverTransport results in messages that have been queued during a
> network interruption being sent out of order upon call to restoreTransport()
> --------------------------------------------------------------------------------------------------------------------------------------------------------
>
> Key: AMQ-1488
> URL: https://issues.apache.org/activemq/browse/AMQ-1488
> Project: ActiveMQ
> Issue Type: Bug
> Components: Transport
> Affects Versions: 4.0.2
> Environment: Windows XP, AMQ 4.0.2, Client side message producer to
> an embedded broker with a failover demand forwarding bridge to a persisting
> broker
> Reporter: Chris Hofstaedter
> Assignee: Rob Davies
> Fix For: 5.1.0
>
>
> FailoverTransport stores all queued messages during network interruptions in
> a HashMap. When restoreTransport() is called, the map is traversed sending
> each queued message.
> However, because the messages are stored in a HashMap, the map is traversed
> in hash-order - not message id order.
> Problematic code in FailoverTransport::restoreTransport():
> for (Iterator iter2 = requestMap.values().iterator();
> iter2.hasNext();) {
> Command command = (Command) iter2.next();
> t.oneway(command);
> }
> The following local patch resolves the issue:
> // Convert the request map to a treemap. It's keyed off of the
> commandid and by putting it into a treemap, we'll pull them off in commandid
> order.
> TreeMap treeMap = new TreeMap();
> treeMap.putAll(requestMap);
> for (Iterator iter2 = treeMap.values().iterator(); iter2.hasNext();) {
> // for (Iterator iter2 = requestMap.values().iterator();
> iter2.hasNext();) {
> Command command = (Command) iter2.next();
> t.oneway(command);
> }
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