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From "Allen Yu (JIRA)" <j...@apache.org>
Subject [jira] Created: (AMQ-1805) Persistent message leak when broker run out of disk space
Date Tue, 17 Jun 2008 15:51:02 GMT
Persistent message leak when broker run out of disk space
---------------------------------------------------------

                 Key: AMQ-1805
                 URL: https://issues.apache.org/activemq/browse/AMQ-1805
             Project: ActiveMQ
          Issue Type: Bug
          Components: Broker
    Affects Versions: 5.1.0
         Environment: ActiveMQ 5.1 (AMQStore w/o SystemUsage configuration)
Windows XP SP2
ActiveMQ CPP 2.1.3
            Reporter: Allen Yu


In our environment, we have several ActvieMQ CPP clients sending persistent messages continuously
to a ActiveMQ 5.1 broker. In normal condition the broker works fine until it ran out of disk
space. At that point the client would receive out of disk space advisory message AFTER sending
the message, therefore the message should be removed from broker, however, the message are
kept in the memory due to a problem in the DataFileAppender & AsyncDatamanager, when the
disk is full, the message is saved in the inflightWrites map but never taken out since the
enqueue will fail due to IOException.

        synchronized (this) {
            // Find the position where this item will land at.
            DataFile dataFile = dataManager.allocateLocation(location);
            if( !sync ) {
                inflightWrites.put(new WriteKey(location), write);
            }
            batch = enqueue(dataFile, write);
        }

and

        synchronized (this) {
            // Find the position where this item will land at.
            DataFile dataFile = dataManager.allocateLocation(location);
            inflightWrites.put(new WriteKey(location), write);
            batch = enqueue(dataFile, write);
        }

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