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https://issues.apache.org/jira/browse/AMQ-3490?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13104712#comment-13104712
]
john richartz commented on AMQ-3490:
------------------------------------
I don't have a test case that directly exposes this issue, but need to put one
together. I'll work on that.
It's not stomp, so I guess it's openwire. There's perhaps 20 concurrent
producers, each emits a burst of large messages once per hour and, of course,
at the same time.
The producers create a connection like this:
QueueConnectionFactory queueFactory =
(QueueConnectionFactory)getJndiElement(m_dataChannelQueueConnectionFactoryJndiName);
log(Level.TRACE, "QueueConnectionFactory successfully
established");
Queue queue = (Queue) getJndiElement(queueName);
m_connection =
queueFactory.createQueueConnection(getJndiUser(), getJndiPassword());
log(Level.TRACE, "QueueConnection created");
m_connection.setClientID("DataChannel_" + m_nodeId +
"_" + queueName +"_" + messageNumber.toString());
messageNumber.incrementAndGet();
m_queueSession = m_connection.createQueueSession(false,
Session.AUTO_ACKNOWLEDGE);
m_queueSender = m_queueSession.createSender(queue);
log(Level.TRACE, "QueueSession created: " +
m_queueSender.toString());
m_queueSender.setDeliveryMode(DeliveryMode.NON_PERSISTENT);
> NPEs during message processing, using FileCursor
> ------------------------------------------------
>
> Key: AMQ-3490
> URL: https://issues.apache.org/jira/browse/AMQ-3490
> Project: ActiveMQ
> Issue Type: Bug
> Components: Message Store
> Affects Versions: 5.6.0
> Environment: Solaris, embedded broker, file cursor enabled
> Reporter: john richartz
>
> In a scenario where a single-consumer queue for non-presistent messages uses
> a file cursor to manage a backlog, bursts of messages result in NPEs.
> Thread dumps for 3 different examples:
> 2011-09-07 12:43:27,057 ERROR [cursors.FilePendingMessageCursor] [] : [Usage
> Async Task] Caught an IO Exception getting the
> DiskList7_PendingCursor:snTableQueue_CHF
> java.lang.NullPointerExceptionnull
> at java.io.Writer.write(Writer.java:140)null
> at java.io.BufferedWriter.newLine(BufferedWriter.java:225)null
> at java.util.Properties.writeComments(Properties.java:671)null
> at java.util.Properties.store0(Properties.java:805)null
> at java.util.Properties.store(Properties.java:796)null
> at org.apache.kahadb.page.PageFile.storeMetaData(PageFile.java:570)null
> at org.apache.kahadb.page.PageFile.load(PageFile.java:361)null
> at
> org.apache.activemq.store.kahadb.plist.PListStore.intialize(PListStore.java:285)null
> at
> org.apache.activemq.store.kahadb.plist.PListStore.getPList(PListStore.java:218)null
> at
> org.apache.activemq.broker.region.cursors.FilePendingMessageCursor.getDiskList(FilePendingMessageCursor.java:457)null
> at
> org.apache.activemq.broker.region.cursors.FilePendingMessageCursor.flushToDisk(FilePendingMessageCursor.java:435)null
> at
> org.apache.activemq.broker.region.cursors.FilePendingMessageCursor.onUsageChanged(FilePendingMessageCursor.java:388)null
> at org.apache.activemq.usage.Usage$1.run(Usage.java:268)null
> at
> java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)null
> at
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)null
> at java.lang.Thread.run(Thread.java: 619)null
> Exception in thread "Usage Async Task" java.lang.RuntimeException:
> java.lang.NullPointerException
> at
> org.apache.activemq.broker.region.cursors.FilePendingMessageCursor.getDiskList(FilePendingMessageCursor.java:460)
> at
> org.apache.activemq.broker.region.cursors.FilePendingMessageCursor.flushToDisk(FilePendingMessageCursor.java:435)
> at
> org.apache.activemq.broker.region.cursors.FilePendingMessageCursor.onUsageChanged(FilePendingMessageCursor.java:388)
> at org.apache.activemq.usage.Usage$1.run(Usage.java:268)
> at
> java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
> at
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
> at java.lang.Thread.run(Thread.java:619)
> Caused by: java.lang.NullPointerException
> at java.io.Writer.write(Writer.java:140)
> at java.io.BufferedWriter.newLine(BufferedWriter.java:225)
> at java.util.Properties.writeComments(Properties.java:671)
> ================================================================
> 2011-09-07 12:43:40,908 ERROR [cursors.FilePendingMessageCursor]
> [1315421994681] : [ActiveMQ Transport: tcp:///134.242.171.26:35469]
> Caught an IO Exception getting the DiskList 7_PendingCursor:snTableQueue_CHF
> java.lang.NullPointerExceptionnull
> at
> org.apache.activemq.store.kahadb.plist.PListStore$1.execute(PListStore.java:229)null
> at org.apache.kahadb.page.Transaction.execute(Transaction.java:760)null
> at org.apache.activemq.store.kahadb.plist.PListStore.getPLis
> t(PListStore.java:225)null
> at
> org.apache.activemq.broker.region.cursors.FilePendingMessageCursor.getDiskList(FilePendingMessageCursor.java:457)null
> at
> org.apache.activemq.broker.region.cursors.FilePendingMessageCursor.tryAddMessageLast(FilePendingMessageCursor.java:226)null
> at
> org.apache.activemq.broker.region.cursors.FilePendingMessageCursor.addMessageLast(FilePendingMessageCursor.java:196)null
> at
> org.apache.activemq.broker.region.Queue.sendMessage(Queue.java:1603)null
> at
> org.apache.activemq.broker.region.Queue.doMessageSend(Queue.java:715)null
> at org.apache.activemq.broker.region.Queue.send(Queue.java:647)null
> at
> org.apache.activemq.broker.region.AbstractRegion.send(AbstractRegion.java:409)null
> at
> org.apache.activemq.broker.region.RegionBroker.send(RegionBroker.java:543)null
> at
> org.apache.activemq.broker.jmx.ManagedRegionBroker.send(ManagedRegionBroker.java:301)null
> at o
> rg.apache.activemq.broker.BrokerFilter.send(BrokerFilter.java:129)null
> at
> org.apache.activemq.broker.CompositeDestinationBroker.send(CompositeDestinationBroker.java:96)null
> at
> org.apache.activemq.broker.TransactionBroker.send(TransactionBroker.java:306)null
> at
> org.apache.activemq.broker.BrokerFilter.send(BrokerFilter.java:129)null
> at
> org.apache.activemq.security.AuthorizationBroker.send(AuthorizationBroker.java:192)null
> at
> org.apache.activemq.broker.BrokerFilter.send(BrokerFilter.java:129)null
> at
> org.apache.activemq.broker.MutableBrokerFilter.send(MutableBrokerFilter.java:135)null
> at
> org.apache.activemq.broker.TransportConnection.processMessage(TransportConnection.java:468)null
> at
> org.apache.activemq.command.ActiveMQMessage.visit(ActiveMQMessage.java:68
> 1)null
> at
> org.apache.activemq.broker.TransportConnection.service(TransportConnection.java:316)null
> at
> org.apache.activemq.broker.TransportConnection$1.onCommand(TransportConnection.java:180)null
> at
> org.apache.activemq.transport.TransportFilter.onCommand(TransportFilter.java:69)null
> at
> org.apache.activemq.transport.WireFormatNegotiator.onCommand(WireFormatNegotiator.java:113)null
> at
> org.apache.activemq.transport.AbstractInactivityMonitor.onCommand(AbstractInactivityMonitor.java:216)null
> at
> org.apache.activemq.transport.TransportSupport.doConsume(TransportSupport.java:83)null
> at
> org.apache.activemq.transport.tcp.TcpTransport.doRun(TcpTransport.java:222)null
> at
> org.apache.activemq.transport.tcp.TcpTransport.run(TcpTransport.java:204)null
>
> at java.lang.Thread.run(Thread.java:619)null
> =======================================================================================
> 2011-09-07 12:43:41,028 ERROR [cursors.FilePendingMessageCursor]
> [1315421994681] : [ActiveMQ Transport: tcp:///134.242.171.26:35469]
> Caught an Exception adding a message: ActiveMQObjectMessage {commandId = 82,
> responseRequired = false, messageId = ID:lgvn-330
> 53-1315415867932-0:19:1:1:78, originalDestination = null,
> originalTransactionId = null, producerId = ID:lgvn-33053-131541586793
> 2-0:19:1:1, destination = queue://snTableQueue_CHF, transactionId = null,
> expiration = 0, timestamp = 1315424620840,
> arrival = 0, brokerInTime = 1315424620881, brokerOutTime = 0, correlationId
> = null, replyTo = null, persistent = false, type = null
> , priority = 4, groupID = null, groupSequence = 0, targetConsumerId = null,
> compressed = false, userID = null, content =
> org.apache.activemq.util.ByteSequence@d42d49, marshalledProperties =
> org.apache.activemq.util.ByteSequence@1e91c40, dataStructure = null,
> redeliveryCounter = 0, size = 0, properties = {TO=0, FROM=37,
> HOST=134.242.171.26, trigger_name=com.foo.receiver.beans.ACTData,
> version=3.4}, readOnlyProperties = false, readOnlyBody = false, droppable =
> false} first to FilePendingMessageCursor
> java.lang.RuntimeException: java.lang.NullPointerExceptionnull
> at
> org.apache.activemq.broker.region.cursors.FilePendingMessageCursor.getDiskList(FilePendingMessageCursor.java:460)null
> at
> org.apache.activemq.broker.region.cursors.FilePendingMessageCursor.tryAddMessageLast(FilePendingMessageCursor.java:226)null
> at
> org.apache.activemq.broker.region.cursors.FilePendingMessageCursor.addMessageLast(FilePendingMessageCursor.java:196)null
> at
> org.apache.activemq.broker.region.Queue.sendMessage(Queue.java:1603)null
> at
> org.apache.activemq.broker.region.Queue.doMessageSend(Queue.java:715)null
> at org.apache.activemq.broker.region.Queue.send(Queue.java:647)null
> at
> org.apache.activemq.broker.region.AbstractRegion.send(AbstractRegion.java:409)null
> at
> org.apache.activemq.broker.region.RegionBroker.send(RegionBroker.java:543)null
> at
> org.apache.activemq.broker.jmx.ManagedRegionBroker.send(ManagedRegionBrok
> er.java:301)null
> at
> org.apache.activemq.broker.BrokerFilter.send(BrokerFilter.java:129)null
> at
> org.apache.activemq.broker.CompositeDestinationBroker.send(CompositeDestinationBroker.java:96)null
> at
> org.apache.activemq.broker.TransactionBroker.send(TransactionBroker.java:306)null
> at
> org.apache.activemq.broker.BrokerFilter.send(BrokerFilter.java:129)null
> at
> org.apache.activemq.security.AuthorizationBroker.send(AuthorizationBroker.java:192)null
> at org.apache.activemq.broker.BrokerFilter.send(BrokerFilter.java:129)null
> at
> org.apache.activemq.broker.MutableBrokerFilter.send(MutableBrokerFilter.java:135)null
>
> at
> org.apache.activemq.broker.TransportConnection.processMessage(TransportConnection.java:468)null
> at
> org.apache.activemq.command.ActiveMQMessage.visit(ActiveMQMessage.java:681)null
> at
> org.apache.activemq.broker.TransportConnection.service(TransportConnection.java:316)null
> at
> org.apache.activemq.broker.TransportConnection$1.onCommand(TransportConnection.java:180)null
> at
> org.apache.activemq.transport.TransportFilter.onCommand(TransportFilter.java:69)null
>
> at
> org.apache.activemq.transport.WireFormatNegotiator.onCommand(WireFormatNegotiator.java:113)null
> at
> org.apache.activemq.transport.AbstractInactivityMonitor.onCommand(AbstractInactivityMonitor.java:216)null
>
> at
> org.apache.activemq.transport.TransportSupport.doConsume(TransportSupport.java:83)null
>
> at
> org.apache.activemq.transport.tcp.TcpTransport.doRun(TcpTransport.java:222)null
> at
> org.apache.activemq.transport.tcp.TcpTransport.run(TcpTransport.java:204)null
>
> at java.lang.Thread.run(Thread.java:619)nullCaused by:
> java.lang.NullPointerExceptionnull
> at
> org.apache.activemq.store.kahadb.plist.PListStore$1.execute(PListStore.java:229)null
>
> at org.apache.kahadb.page.Transaction.execute(Transaction.java:760)null
> at
> org.apache.activemq.store.kahadb.plist.PListStore.getPList(PListStore.java:225)null
> at
> org.apache.activemq.broker.region.cursors.FilePendingMessageCursor.getDiskList(FilePendingMessageCursor.java:457)null
>
> ... 26 morenull
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