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From "Jayson Minard (JIRA)" <j...@apache.org>
Subject [jira] Created: (AMQ-1971) ConcurrentModificationException in high volume broker
Date Wed, 08 Oct 2008 18:42:52 GMT
ConcurrentModificationException in high volume broker 
------------------------------------------------------

                 Key: AMQ-1971
                 URL: https://issues.apache.org/activemq/browse/AMQ-1971
             Project: ActiveMQ
          Issue Type: Bug
          Components: Broker
    Affects Versions: 5.2.0
            Reporter: Jayson Minard


This is occurring in the thousands as messages come through.    We have a network of 5 brokers
although they do most of their work internally (publisher/consumer for queue are only on same
broker) and do less work crossing to a central broker.

java.util.ConcurrentModificationException
	at java.util.LinkedHashMap$LinkedHashIterator.nextEntry(LinkedHashMap.java:373)
	at java.util.LinkedHashMap$EntryIterator.next(LinkedHashMap.java:392)
	at java.util.LinkedHashMap$EntryIterator.next(LinkedHashMap.java:391)
	at org.apache.activemq.broker.region.cursors.AbstractStoreCursor.next(AbstractStoreCursor.java:136)
	at org.apache.activemq.broker.region.cursors.StoreQueueCursor.next(StoreQueueCursor.java:140)
	at org.apache.activemq.broker.region.Queue.doPageIn(Queue.java:1178)
	at org.apache.activemq.broker.region.Queue.pageInMessages(Queue.java:1290)
	at org.apache.activemq.broker.region.Queue.iterate(Queue.java:1004)
	at org.apache.activemq.thread.DeterministicTaskRunner.runTask(DeterministicTaskRunner.java:84)
	at org.apache.activemq.thread.DeterministicTaskRunner$1.run(DeterministicTaskRunner.java:41)
	at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
	at java.lang.Thread.run(Thread.java:619)



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