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From "Ronald Tschalaer (JIRA)" <j...@apache.org>
Subject [jira] Updated: (DERBY-4109) Java-level deadlock in XATransactionState
Date Wed, 01 Apr 2009 13:09:14 GMT

     [ https://issues.apache.org/jira/browse/DERBY-4109?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Ronald Tschalaer updated DERBY-4109:
------------------------------------

    Priority: Critical  (was: Major)

Bumping the severity because I've been getting this quite often, and a java-level deadlock
really prevents this from being used in a production environment.

> 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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