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From "Alexander Fisher (JIRA)" <>
Subject [jira] Created: (AMQ-2448) Memory leak when there are network connector retries to an unavailable broker
Date Tue, 13 Oct 2009 13:15:53 GMT
Memory leak when there are network connector retries to an unavailable broker

                 Key: AMQ-2448
             Project: ActiveMQ
          Issue Type: Bug
          Components: Broker
    Affects Versions: 5.3.0
         Environment: Debian Linux 5.0 amd64 with included Sun Java 6 JRE
            Reporter: Alexander Fisher

I've discovered a reproducible memory leak.  After discussion on IRC, it is believed to be
related to my network of brokers configuration.
I have a total of 4 brokers configured on 4 hosts (activemq1,2,3,4).
activemq1 and activemq2 are a shared filesystem master slave pair.  activemq3 and activemq4
are setup in a similar way as a master/slave pair.
Only one of activemq1 and 2 will be active at a time, likewise only one of activemq3 and 4.

Both activemq1 and activemq2 have a config with the following networkConnector.
                        name="Connection to 3 and 4"

The broker will only be able to connect to either 3 or 4 as only one can be running at a time.
For obvious reasons, connecting to the slave will fail, but the connection attempt will be
retried every 30 seconds by default (more often on initial startup due to backoff algorithm).
It is believed that the continuous reconnect attempts are the source of the memory leak.

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