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https://issues.apache.org/activemq/browse/AMQ-2161?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Michael Gottschalk updated AMQ-2161:
------------------------------------
Attachment: activemq-error-async.log
Extract from the ActiveMQ log file with the exceptions.
> Unmatched acknowledege Exception and duplicate received messages in XA
> transaction with prefetch limit != 1
> -----------------------------------------------------------------------------------------------------------
>
> Key: AMQ-2161
> URL: https://issues.apache.org/activemq/browse/AMQ-2161
> Project: ActiveMQ
> Issue Type: Bug
> Affects Versions: 5.2.0
> Environment: Ubuntu Linux 2.6.24-22
> Processor with 2 cores
> Java 1.6.0_02-b05
> Bitronix Transaction Manager 1.3.2
> Reporter: Michael Gottschalk
> Attachments: activemq-error-async.log
>
>
> I tried to read about 200000 messages from a queue. Reading was performed in
> XA transactions in chunks of 1000 messages per transaction.
> After reading some messages (I almost never came above 100000 read messages),
> an exception occured in the activemq log file (data/activemq.log).
> In my application, null was returned for the message. Reading of further
> messages always returned null until a new transaction was opened.
> No exception was thrown and the transaction was not marked as rolled back.
> After that, the number of read messages in my application and the number of
> dequeued messages I saw in the activemq JMX interface was often no longer in
> sync. It seems to me that activemq was of the opinion that the transaction
> was rolled back while my application was not.
> Another indication is that my application always gets one of the read
> messages a second time some time after the incident.
> When I set the prefetchPolicy.all to 1, the problem seems to disappear. Then,
> there are no more exceptions in the log file and a null message is never
> returned.
> I also tried with prefetchPolicy.all=0, but that created a different problem:
> there are no exceptions either, but after some time, the application hang
> completely in the reader thread and never returned. I tried this only once,
> but probably this should also be investigated, if there is no easy
> explanation.
> I wrote a test case that demonstrates the bug (see attachment). It always
> occured for 200000 messages, and almost always for 100000 messages. For 20000
> messages, for example, the problem almost never occurs. For executing the
> test, I first stopped the activemq server, deleted the data directory and
> then restarted the server. After that, I executed the test, which first
> writes all messages into a queue and then tries to read them back.
> The stacktrace from the activemq log file is attached.
> The configuration of the broker in my activemq.xml configuration file:
> <broker xmlns="http://activemq.apache.org/schema/core";
> brokerName="localhost" dataDirectory="${activemq.base}/data"
> persistent="true">
> <destinationPolicy>
> <policyMap>
> <policyEntries>
> <policyEntry queue=">" memoryLimit="2000mb"/>
> <policyEntry topic=">" memoryLimit="5mb">
> </policyEntry>
> </policyEntries>
> </policyMap>
> </destinationPolicy>
> <managementContext>
> <managementContext createConnector="false"/>
> </managementContext>
> <networkConnectors>
> </networkConnectors>
> <persistenceAdapter>
> <amqPersistenceAdapter syncOnWrite="false"
> directory="${activemq.base}/data" maxFileLength="20 mb"
> indexBinSize="131072"
> indexPageSize="128kb" />
> </persistenceAdapter>
> <sslContext>
> <sslContext keyStore="file:${activemq.base}/conf/broker.ks"
> keyStorePassword="password" trustStore="file:${activemq.base}/conf/broker.ts"
> trustStorePassword="password"/>
> </sslContext>
> <systemUsage>
> <systemUsage>
> <memoryUsage>
> <memoryUsage limit="1000 mb"/>
> </memoryUsage>
> <storeUsage>
> <storeUsage limit="2 gb" name="foo"/>
> </storeUsage>
> <tempUsage>
> <tempUsage limit="2000 mb"/>
> </tempUsage>
> </systemUsage>
> </systemUsage>
> <transportConnectors>
> <transportConnector name="openwire" uri="tcp://localhost:61616" />
> </transportConnectors>
> </broker>
> The configuration of the transaction manager (from the Spring application
> context):
> <bean id="btmConfig"
> class="bitronix.tm.TransactionManagerServices"
> factory-method="getConfiguration">
> <property name="serverId" value="${processes.serverId}"/>
> <property name="logPart1Filename"
> value="${processes.bitronix.logPart1Filename}" />
> <property name="logPart2Filename"
> value="${processes.bitronix.logPart2Filename}" />
> <property name="warnAboutZeroResourceTransaction" value="false" />
> </bean>
>
> <bean id="bitronixTransactionManager" destroy-method="shutdown"
> depends-on="btmConfig"
> class="bitronix.tm.TransactionManagerServices"
> factory-method="getTransactionManager">
> <property name="transactionTimeout" value="600000"/>
> </bean>
>
> <bean id="transactionManager"
> class="org.springframework.transaction.jta.JtaTransactionManager">
> <property name="transactionManager" ref="bitronixTransactionManager"
> />
> <property name="userTransaction" ref="bitronixTransactionManager" />
> <property name="autodetectTransactionManager" value="false" />
> <property name="autodetectUserTransaction" value="false" />
> <property name="defaultTimeout" value="600000" />
> </bean>
>
> <bean id="transactionTemplate"
> class="org.springframework.transaction.support.TransactionTemplate">
> <property name="transactionManager" ref="transactionManager" />
> </bean>
> The queue definition from the applicationContext:
> <amq:queue id="loadtestqueue" physicalName="loadtestqueue" />
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