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https://issues.apache.org/activemq/browse/AMQ-2178?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Sebastian Gutsfeld updated AMQ-2178:
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Attachment: fix_command_visitor_in_connection_state_tracker.patch
The bug was found in the FUSE distribution of ActiveMQ but can also be applied
to the official Apache distribution.
> Memory leak in ConnectionStateTracker (cannot remove connections, sessions or
> consumers)
> ----------------------------------------------------------------------------------------
>
> Key: AMQ-2178
> URL: https://issues.apache.org/activemq/browse/AMQ-2178
> Project: ActiveMQ
> Issue Type: Bug
> Affects Versions: 5.2.0
> Environment: Debian Linux
> Processor with 2 cores
> Java 1.6.0_07-b06
> Bitronix Transaction Manager 1.3.2
> Reporter: Sebastian Gutsfeld
> Attachments: fix_command_visitor_in_connection_state_tracker.patch
>
>
> After inspecting the heap dump of our application we saw that the
> ConcurrentHashMap connectionStates in
> org.apache.activemq.state.ConnectionStateTracker in
> org.apache.activemq.transport.failover.FailoverTransport consumes very much
> heap space.
> The ConnectionStateTracker is an implementation of a CommandVisitor, but the
> function to remove connections from the connectionStates ConcurrentHashMap in
> processRemoveConnection() is never called, as it does not correspond to the
> CommandVisitor interface. The same applies to the processRemoveConsumer() and
> processRemoveSession() functions.
> I attached a patch to fix those bugs and remove the memory leak in
> ConnectionStateTracker.
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