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From "Hans Bausewein (JIRA)" <j...@apache.org>
Subject [jira] Commented: (AMQ-1971) ConcurrentModificationException in high volume broker
Date Sun, 12 Oct 2008 08:59:52 GMT

    [ https://issues.apache.org/activemq/browse/AMQ-1971?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=46376#action_46376
] 

Hans Bausewein commented on AMQ-1971:
-------------------------------------

Have you tried RC2?

See http://www.nabble.com/-VOTE--ActiveMQ-5.2.0---RC2-td19874910.html

If it fails, vote -1 and add the link to this issue.

> 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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