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https://issues.apache.org/jira/browse/DERBY-4109?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12706652#action_12706652
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Kathey Marsden commented on DERBY-4109:
---------------------------------------
Do you have a reproduction for this issue?
> Java-level deadlock in XATransactionState
> -----------------------------------------
>
> Key: DERBY-4109
> URL: https://issues.apache.org/jira/browse/DERBY-4109
> Project: Derby
> Issue Type: Bug
> Components: JDBC
> Affects Versions: 10.4.2.0
> Environment: Linux, Sun jdk 1.6.0_12 (64-bit)
> Reporter: Ronald Tschalaer
> Priority: Critical
>
> Due to some other issue in derby (a hang in ActiveLock.waitForGrant
> while executing a prepared-statement), the transaction times out at
> which point Derby hits the following java-level deadlock (from the
> jvm thread-dump):
> Found one Java-level deadlock:
> =============================
> "Thread-6":
> waiting to lock monitor 0x00002aaaf43d2ec8 (object 0x00002aaadcce9070, a
> org.apache.derby.jdbc.XATransactionState),
> which is held by "Timer-0"
> "Timer-0":
> waiting to lock monitor 0x00002aaaf43d75a8 (object 0x00002aaadcce2e60, a
> org.apache.derby.impl.jdbc.EmbedConnection40),
> which is held by "Thread-6"
> Java stack information for the threads listed above:
> ===================================================
> "Thread-6":
> at org.apache.derby.jdbc.XATransactionState.cleanupOnError(Unknown
> Source)
> - waiting to lock <0x00002aaadcce9070> (a
> org.apache.derby.jdbc.XATransactionState)
> at
> org.apache.derby.iapi.services.context.ContextManager.cleanupOnError(Unknown
> Source)
> at
> org.apache.derby.impl.jdbc.TransactionResourceImpl.cleanupOnError(Unknown
> Source)
> at
> org.apache.derby.impl.jdbc.TransactionResourceImpl.handleException(Unknown
> Source)
> at org.apache.derby.impl.jdbc.EmbedConnection.handleException(Unknown
> Source)
> at org.apache.derby.impl.jdbc.ConnectionChild.handleException(Unknown
> Source)
> at org.apache.derby.impl.jdbc.EmbedStatement.executeStatement(Unknown
> Source)
> - locked <0x00002aaadcce2e60> (a
> org.apache.derby.impl.jdbc.EmbedConnection40)
> at org.apache.derby.impl.jdbc.EmbedStatement.execute(Unknown Source)
> - locked <0x00002aaadcce2e60> (a
> org.apache.derby.impl.jdbc.EmbedConnection40)
> at org.apache.derby.impl.jdbc.EmbedStatement.execute(Unknown Source)
> at org.apache.derby.iapi.jdbc.BrokeredStatement.execute(Unknown
> Source)
> at
> org.fedoracommons.akubra.txn.derby.TransactionalConnection.beforeCompletion(TransactionalConnection.java:293)
> at
> bitronix.tm.BitronixTransaction.fireBeforeCompletionEvent(BitronixTransaction.java:366)
> at
> bitronix.tm.BitronixTransaction.commit(BitronixTransaction.java:142)
> at
> bitronix.tm.BitronixTransactionManager.commit(BitronixTransactionManager.java:96)
> at
> org.fedoracommons.akubra.txn.derby.TestTransactionalStore.doInTxn(TestTransactionalStore.java:759)
> at
> org.fedoracommons.akubra.txn.derby.TestTransactionalStore.access$900(TestTransactionalStore.java:60)
> at
> org.fedoracommons.akubra.txn.derby.TestTransactionalStore$4.erun(TestTransactionalStore.java:586)
> at
> org.fedoracommons.akubra.txn.derby.TestTransactionalStore$ERunnable.run(TestTransactionalStore.java:803)
> at java.lang.Thread.run(Thread.java:619)
> "Timer-0":
> at org.apache.derby.impl.jdbc.EmbedConnection.xa_rollback(Unknown
> Source)
> - waiting to lock <0x00002aaadcce2e60> (a
> org.apache.derby.impl.jdbc.EmbedConnection40)
> at org.apache.derby.jdbc.XATransactionState.cancel(Unknown Source)
> - locked <0x00002aaadcce9070> (a
> org.apache.derby.jdbc.XATransactionState)
> at org.apache.derby.jdbc.XATransactionState.access$000(Unknown Source)
> at
> org.apache.derby.jdbc.XATransactionState$CancelXATransactionTask.run(Unknown
> Source)
> at java.util.TimerThread.mainLoop(Timer.java:512)
> at java.util.TimerThread.run(Timer.java:462)
> Found 1 deadlock.
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