[jira] [Closed] (JENA-299) LeaveCriticalSection Error

["Andy Seaborne (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/JENA-299?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Andy Seaborne closed JENA-299.
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> LeaveCriticalSection Error
> --------------------------
>
>                 Key: JENA-299
>                 URL: https://issues.apache.org/jira/browse/JENA-299
>             Project: Apache Jena
>          Issue Type: Bug
>          Components: TDB
>    Affects Versions: TDB 0.9.4
>         Environment: windows 64 bit
>            Reporter: Simon Helsen
>            Assignee: Andy Seaborne
>            Priority: Critical
>             Fix For: TDB 0.9.4
>
>         Attachments: LeaveCriticalSectionTestCase.zip
>
>
> I have attached a standalone test case, which, when run with the latest snapshot produces the following exception:
> Exception in thread "main" com.hp.hpl.jena.shared.JenaException: leaveCriticalSection: No lock held (main) Thread R/W: 0/0 :: Model R/W: 0/0 (thread: main)
> 	at com.hp.hpl.jena.shared.LockMRSW.leaveCriticalSection(LockMRSW.java:175)
> 	at com.hp.hpl.jena.tdb.transaction.TransactionManager$TSM_WriteBackEndTxn.readerFinishes(TransactionManager.java:210)
> 	at com.hp.hpl.jena.tdb.transaction.TransactionManager.readerFinishes(TransactionManager.java:723)
> 	at com.hp.hpl.jena.tdb.transaction.TransactionManager.noteTxnAbort(TransactionManager.java:587)
> 	at com.hp.hpl.jena.tdb.transaction.TransactionManager.notifyAbort(TransactionManager.java:445)
> 	at com.hp.hpl.jena.tdb.transaction.Transaction.abort(Transaction.java:162)
> 	at com.hp.hpl.jena.tdb.transaction.DatasetGraphTxn.abort(DatasetGraphTxn.java:45)
> 	at com.hp.hpl.jena.tdb.transaction.DatasetGraphTransaction._abort(DatasetGraphTransaction.java:156)
> 	at com.hp.hpl.jena.tdb.migrate.DatasetGraphTrackActive.abort(DatasetGraphTrackActive.java:68)
> 	at com.hp.hpl.jena.sparql.core.DatasetImpl.abort(DatasetImpl.java:149)
> 	at com.ibm.jena.test.LeaveCriticalSectionErrorTest.storeOperation(LeaveCriticalSectionErrorTest.java:57)
> 	at com.ibm.jena.test.LeaveCriticalSectionErrorTest.query1(LeaveCriticalSectionErrorTest.java:105)
> 	at com.ibm.jena.test.LeaveCriticalSectionErrorTest.main(LeaveCriticalSectionErrorTest.java:156)
> The sequence in the test case is to run 2 queries, 1 write and then again 2 queries:
> 	test.query1();
> 		test.query1();
> 		test.write1();
> 		test.query1();
> 		test.query1();
> Somehow, the following sequence did not produce the exception:
> 	test.query1();
> 		test.query1();
> 		test.write1();
> 		test.query1();
> Note that the test case does not check the correctness of any results.

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