[
https://issues.apache.org/jira/browse/AMQ-8400?focusedWorklogId=664690&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-664690
]
ASF GitHub Bot logged work on AMQ-8400:
---------------------------------------
Author: ASF GitHub Bot
Created on: 13/Oct/21 14:57
Start Date: 13/Oct/21 14:57
Worklog Time Spent: 10m
Work Description: cshannon commented on pull request #720:
URL: https://github.com/apache/activemq/pull/720#issuecomment-942390816
Probably, synchronization is most likely better than copying since that is
pretty expensive and synchronizing on the object when it's not contended is not
very expensive
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Issue Time Tracking
-------------------
Worklog Id: (was: 664690)
Time Spent: 1h (was: 50m)
> ConcurrentModificationException in Transaction.java
> ---------------------------------------------------
>
> Key: AMQ-8400
> URL: https://issues.apache.org/jira/browse/AMQ-8400
> Project: ActiveMQ
> Issue Type: Task
> Components: Broker
> Affects Versions: 5.15.15
> Reporter: Matt Pavlovich
> Priority: Major
> Fix For: 5.17.0, 5.16.4
>
> Time Spent: 1h
> Remaining Estimate: 0h
>
> With LoggingBrokerPlugin enabled:
> {noformat}
> 2021-10-08T13:21:06,201 | WARN | ActiveMQ NIO Worker 394 | LocalTransaction
> | 71 - org.apache.activemq.activemq-osgi - 5.15.15 | POST
> COMMIT FAILED:
> java.util.ConcurrentModificationException: null
> at
> java.util.ArrayList$Itr.checkForComodification(ArrayList.java:1043) ~[?:?]
> at java.util.ArrayList$Itr.next(ArrayList.java:997) ~[?:?]
> at
> org.apache.activemq.transaction.Transaction.fireAfterCommit(Transaction.java:132)
> ~[?:?]
> at
> org.apache.activemq.transaction.Transaction.doPostCommit(Transaction.java:201)
> ~[?:?]
> at
> org.apache.activemq.transaction.Transaction$2.call(Transaction.java:59) ~[?:?]
> at java.util.concurrent.FutureTask.run(FutureTask.java:264) ~[?:?]
> at
> org.apache.activemq.store.kahadb.MessageDatabase.store(MessageDatabase.java:1156)
> ~[?:?]
> at
> org.apache.activemq.store.kahadb.MessageDatabase.store(MessageDatabase.java:1116)
> ~[?:?]
> at
> org.apache.activemq.store.kahadb.KahaDBTransactionStore.commit(KahaDBTransactionStore.java:301)
> ~[?:?]
> at
> org.apache.activemq.transaction.LocalTransaction.commit(LocalTransaction.java:70)
> ~[?:?]
> at
> org.apache.activemq.broker.TransactionBroker.commitTransaction(TransactionBroker.java:252)
> ~[?:?]
> at
> org.apache.activemq.broker.BrokerFilter.commitTransaction(BrokerFilter.java:114)
> ~[?:?]
> at
> org.apache.activemq.broker.BrokerFilter.commitTransaction(BrokerFilter.java:114)
> ~[?:?]
> at
> org.apache.activemq.broker.BrokerFilter.commitTransaction(BrokerFilter.java:114)
> ~[?:?]
> at
> org.apache.activemq.broker.util.LoggingBrokerPlugin.commitTransaction(LoggingBrokerPlugin.java:203)
> ~[?:?]
> at
> org.apache.activemq.broker.BrokerFilter.commitTransaction(BrokerFilter.java:114)
> ~[?:?]
> at
> org.apache.activemq.broker.BrokerFilter.commitTransaction(BrokerFilter.java:114)
> ~[?:?]
> at
> org.apache.activemq.broker.BrokerFilter.commitTransaction(BrokerFilter.java:114)
> ~[?:?]
> at
> org.apache.activemq.broker.TransportConnection.processCommitTransactionOnePhase(TransportConnection.java:538)
> ~[?:?]
> at
> org.apache.activemq.command.TransactionInfo.visit(TransactionInfo.java:100)
> ~[?:?]
> at
> org.apache.activemq.broker.TransportConnection.service(TransportConnection.java:336)
> ~[?:?]
> at
> org.apache.activemq.broker.TransportConnection$1.onCommand(TransportConnection.java:200)
> ~[?:?]
> at
> org.apache.activemq.transport.MutexTransport.onCommand(MutexTransport.java:50)
> ~[?:?]
> at
> org.apache.activemq.transport.TransportFilter.onCommand(TransportFilter.java:77)
> ~[?:?]
> at
> org.apache.activemq.transport.WireFormatNegotiator.onCommand(WireFormatNegotiator.java:125)
> ~[?:?]
> at
> org.apache.activemq.transport.AbstractInactivityMonitor.onCommand(AbstractInactivityMonitor.java:301)
> ~[?:?]
> at
> org.apache.activemq.transport.TransportSupport.doConsume(TransportSupport.java:83)
> ~[?:?]
> at
> org.apache.activemq.transport.nio.NIOSSLTransport.doConsume(NIOSSLTransport.java:501)
> ~[?:?]
> at
> org.apache.activemq.transport.nio.NIOSSLTransport.processCommand(NIOSSLTransport.java:364)
> ~[?:?]
> at
> org.apache.activemq.transport.nio.NIOSSLTransport.serviceRead(NIOSSLTransport.java:279)
> ~[?:?]
> at
> org.apache.activemq.transport.nio.NIOSSLTransport$1.onSelect(NIOSSLTransport.java:175)
> ~[?:?]
> at
> org.apache.activemq.transport.nio.SelectorSelection.onSelect(SelectorSelection.java:98)
> ~[?:?]
> at
> org.apache.activemq.transport.nio.SelectorWorker$1.run(SelectorWorker.java:123)
> ~[?:?]
> at
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128)
> ~[?:?]
> at
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)
> ~[?:?]
> at java.lang.Thread.run(Thread.java:829) [?:?]
> 2021-10-08T13:21:06,202 | WARN | ActiveMQ NIO Worker 394 | LocalTransaction
> | 71 - org.apache.activemq.activemq-osgi - 5.15.15 | Store
> COMMIT FAILED:
> javax.transaction.xa.XAException: POST COMMIT FAILED xaErrorCode:-3
> at
> org.apache.activemq.transaction.Transaction.newXAException(Transaction.java:213)
> ~[?:?]
> at
> org.apache.activemq.transaction.Transaction.doPostCommit(Transaction.java:206)
> ~[?:?]
> at
> org.apache.activemq.transaction.Transaction$2.call(Transaction.java:59) ~[?:?]
> at java.util.concurrent.FutureTask.run(FutureTask.java:264) ~[?:?]
> at
> org.apache.activemq.store.kahadb.MessageDatabase.store(MessageDatabase.java:1156)
> ~[?:?]
> at
> org.apache.activemq.store.kahadb.MessageDatabase.store(MessageDatabase.java:1116)
> ~[?:?]
> at
> org.apache.activemq.store.kahadb.KahaDBTransactionStore.commit(KahaDBTransactionStore.java:301)
> ~[?:?]
> at
> org.apache.activemq.transaction.LocalTransaction.commit(LocalTransaction.java:70)
> ~[?:?]
> at
> org.apache.activemq.broker.TransactionBroker.commitTransaction(TransactionBroker.java:252)
> ~[?:?]
> at
> org.apache.activemq.broker.BrokerFilter.commitTransaction(BrokerFilter.java:114)
> ~[?:?]
> at
> org.apache.activemq.broker.BrokerFilter.commitTransaction(BrokerFilter.java:114)
> ~[?:?]
> at
> org.apache.activemq.broker.BrokerFilter.commitTransaction(BrokerFilter.java:114)
> ~[?:?]
> at
> org.apache.activemq.broker.util.LoggingBrokerPlugin.commitTransaction(LoggingBrokerPlugin.java:203)
> ~[?:?]
> at
> org.apache.activemq.broker.BrokerFilter.commitTransaction(BrokerFilter.java:114)
> ~[?:?]
> at
> org.apache.activemq.broker.BrokerFilter.commitTransaction(BrokerFilter.java:114)
> ~[?:?]
> at
> org.apache.activemq.broker.BrokerFilter.commitTransaction(BrokerFilter.java:114)
> ~[?:?]
> at
> org.apache.activemq.broker.TransportConnection.processCommitTransactionOnePhase(TransportConnection.java:538)
> ~[?:?]
> at
> org.apache.activemq.command.TransactionInfo.visit(TransactionInfo.java:100)
> ~[?:?]
> at
> org.apache.activemq.broker.TransportConnection.service(TransportConnection.java:336)
> ~[?:?]
> at
> org.apache.activemq.broker.TransportConnection$1.onCommand(TransportConnection.java:200)
> ~[?:?]
> at
> org.apache.activemq.transport.MutexTransport.onCommand(MutexTransport.java:50)
> ~[?:?]
> at
> org.apache.activemq.transport.TransportFilter.onCommand(TransportFilter.java:77)
> ~[?:?]
> at
> org.apache.activemq.transport.WireFormatNegotiator.onCommand(WireFormatNegotiator.java:125)
> ~[?:?]
> at
> org.apache.activemq.transport.AbstractInactivityMonitor.onCommand(AbstractInactivityMonitor.java:301)
> ~[?:?]
> at
> org.apache.activemq.transport.TransportSupport.doConsume(TransportSupport.java:83)
> ~[?:?]
> at
> org.apache.activemq.transport.nio.NIOSSLTransport.doConsume(NIOSSLTransport.java:501)
> ~[?:?]
> at
> org.apache.activemq.transport.nio.NIOSSLTransport.processCommand(NIOSSLTransport.java:364)
> ~[?:?]
> at
> org.apache.activemq.transport.nio.NIOSSLTransport.serviceRead(NIOSSLTransport.java:279)
> ~[?:?]
> at
> org.apache.activemq.transport.nio.NIOSSLTransport$1.onSelect(NIOSSLTransport.java:175)
> ~[?:?]
> at
> org.apache.activemq.transport.nio.SelectorSelection.onSelect(SelectorSelection.java:98)
> ~[?:?]
> at
> org.apache.activemq.transport.nio.SelectorWorker$1.run(SelectorWorker.java:123)
> ~[?:?]
> at
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128)
> ~[?:?]
> at
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)
> ~[?:?]
> at java.lang.Thread.run(Thread.java:829) [?:?]
> Caused by: java.util.ConcurrentModificationException
> at
> java.util.ArrayList$Itr.checkForComodification(ArrayList.java:1043) ~[?:?]
> at java.util.ArrayList$Itr.next(ArrayList.java:997) ~[?:?]
> at
> org.apache.activemq.transaction.Transaction.fireAfterCommit(Transaction.java:132)
> ~[?:?]
> at
> org.apache.activemq.transaction.Transaction.doPostCommit(Transaction.java:201)
> ~[?:?]
> ... 32 more
> {noformat}
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