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https://issues.apache.org/activemq/browse/AMQ-1971?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=46383#action_46383
]
Jayson Minard commented on AMQ-1971:
------------------------------------
Still have error on single broker run... JDK 1.6, ACTIVEMQ_OPTS=-Xmx1g, pretty
vanilla activemq.xml configuration other than changing broker name and adding a
few settings here to the broker element for testing:
<broker xmlns="http://activemq.apache.org/schema/core"; brokerName="${HOSTNAME}"
dataDirectory="${activemq.base}/data"
keepDurableSubsActive="true" useJmx="true" useVirtualTopics="false"
deleteAllMessagesOnStartup="true" >
INFO log - jetty-6.1.9
INFO WebConsoleStarter - ActiveMQ WebConsole initialized.
INFO /admin - Initializing Spring FrameworkServlet
'dispatcher'
INFO log - ActiveMQ Console at
http://0.0.0.0:8161/admin
INFO log - ActiveMQ Web Demos at
http://0.0.0.0:8161/demo
INFO log - RESTful file access application at
http://0.0.0.0:8161/fileserver
INFO log - Started [EMAIL PROTECTED]:8161
WARN BrokerRegistry - Broker localhost not started so using
query1.removed.removed.com instead
INFO TransportConnector - Connector vm://localhost Started
ERROR Queue - Failed to page in more queue messages
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:1181)
at
org.apache.activemq.broker.region.Queue.pageInMessages(Queue.java:1308)
at org.apache.activemq.broker.region.Queue.iterate(Queue.java:1011)
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$Worker.run(ThreadPoolExecutor.java:908)
at java.lang.Thread.run(Thread.java:619)
ERROR Queue - Failed to page in more queue messages
java.util.ConcurrentModificationException
at
java.util.LinkedHashMap$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:1181)
at
org.apache.activemq.broker.region.Queue.pageInMessages(Queue.java:1308)
at org.apache.activemq.broker.region.Queue.iterate(Queue.java:1011)
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$Worker.run(ThreadPoolExecutor.java:908)
at java.lang.Thread.run(Thread.java:619)
ERROR Queue - Failed to page in more queue messages
java.util.ConcurrentModificationException
at
java.util.LinkedHashMap$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:1181)
at
org.apache.activemq.broker.region.Queue.pageInMessages(Queue.java:1308)
at org.apache.activemq.broker.region.Queue.iterate(Queue.java:1011)
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$Worker.run(ThreadPoolExecutor.java:908)
at java.lang.Thread.run(Thread.java:619)
ERROR Queue - Failed to page in more queue messages
java.util.ConcurrentModificationException
at
java.util.LinkedHashMap$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:1181)
at
org.apache.activemq.broker.region.Queue.pageInMessages(Queue.java:1308)
at org.apache.activemq.broker.region.Queue.iterate(Queue.java:1011)
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$Worker.run(ThreadPoolExecutor.java:908)
at java.lang.Thread.run(Thread.java:619)
> ConcurrentModificationException in high volume broker
> ------------------------------------------------------
>
> Key: AMQ-1971
> URL: https://issues.apache.org/activemq/browse/AMQ-1971
> Project: ActiveMQ
> Issue Type: Bug
> Components: Broker
> Affects Versions: 5.2.0
> Reporter: Jayson Minard
>
> This is occurring in the thousands as messages come through. We have a
> network of 5 brokers although they do most of their work internally
> (publisher/consumer for queue are only on same broker) and do less work
> crossing to a central broker.
> java.util.ConcurrentModificationException
> at
> java.util.LinkedHashMap$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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