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Posted to dev@jena.apache.org by "Simon Helsen (JIRA)" <ji...@apache.org> on 2011/08/12 22:47:27 UTC
[jira] [Commented] (JENA-96) transactional behavior not sound
[ https://issues.apache.org/jira/browse/JENA-96?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13084365#comment-13084365 ]
Simon Helsen commented on JENA-96:
----------------------------------
A little bit later, I also see
java.lang.IndexOutOfBoundsException: Index: 6, Size: 6
at java.util.ArrayList.remove(ArrayList.java:552)
at java.util.ArrayList.remove(ArrayList.java:572)
at com.hp.hpl.jena.tdb.transaction.Transaction.removeIterator(Transaction.java:177)
at com.hp.hpl.jena.tdb.transaction.BlockMgrJournal.endIterator(BlockMgrJournal.java:300)
at com.hp.hpl.jena.tdb.base.block.BlockMgrWrapper.endIterator(BlockMgrWrapper.java:123)
at com.hp.hpl.jena.tdb.base.recordbuffer.RecordRangeIterator.close(RecordRangeIterator.java:144)
at com.hp.hpl.jena.tdb.base.recordbuffer.RecordRangeIterator.hasNext(RecordRangeIterator.java:101)
at org.openjena.atlas.iterator.Iter$4.hasNext(Iter.java:262)
at com.hp.hpl.jena.tdb.sys.DatasetControlMRSW$IteratorCheckNotConcurrent.hasNext(DatasetControlMRSW.java:107)
at org.openjena.atlas.iterator.Iter$3.hasNext(Iter.java:150)
at org.openjena.atlas.iterator.Iter$4.hasNext(Iter.java:262)
at org.openjena.atlas.iterator.Iter$3.hasNext(Iter.java:152)
at org.openjena.atlas.iterator.Iter.hasNext(Iter.java:674)
at org.openjena.atlas.iterator.RepeatApplyIterator.hasNext(RepeatApplyIterator.java:30)
at org.openjena.atlas.iterator.Iter$4.hasNext(Iter.java:262)
at com.hp.hpl.jena.sparql.engine.iterator.QueryIterPlainWrapper.hasNextBinding(QueryIterPlainWrapper.java:43)
at com.hp.hpl.jena.sparql.engine.iterator.QueryIteratorBase.hasNext(QueryIteratorBase.java:86)
at com.hp.hpl.jena.sparql.engine.iterator.QueryIterConcat.hasNextBinding(QueryIterConcat.java:71)
at com.hp.hpl.jena.sparql.engine.iterator.QueryIteratorBase.hasNext(QueryIteratorBase.java:86)
at com.hp.hpl.jena.sparql.engine.iterator.QueryIterRepeatApply.hasNextBinding(QueryIterRepeatApply.java:67)
at com.hp.hpl.jena.sparql.engine.iterator.QueryIteratorBase.hasNext(QueryIteratorBase.java:86)
at com.hp.hpl.jena.sparql.engine.iterator.QueryIterProcessBinding.hasNextBinding(QueryIterProcessBinding.java:49)
at com.hp.hpl.jena.sparql.engine.iterator.QueryIteratorBase.hasNext(QueryIteratorBase.java:86)
at com.hp.hpl.jena.sparql.engine.iterator.QueryIterPeek.hasNextBinding(QueryIterPeek.java:46)
at com.hp.hpl.jena.sparql.engine.iterator.QueryIteratorBase.hasNext(QueryIteratorBase.java:86)
at org.openjena.atlas.iterator.Iter$4.hasNext(Iter.java:262)
at org.openjena.atlas.iterator.RepeatApplyIterator.hasNext(RepeatApplyIterator.java:34)
at org.openjena.atlas.iterator.Iter$4.hasNext(Iter.java:262)
at com.hp.hpl.jena.sparql.engine.iterator.QueryIterPlainWrapper.hasNextBinding(QueryIterPlainWrapper.java:43)
at com.hp.hpl.jena.sparql.engine.iterator.QueryIteratorBase.hasNext(QueryIteratorBase.java:86)
at com.hp.hpl.jena.sparql.engine.iterator.QueryIterConvert.hasNextBinding(QueryIterConvert.java:54)
at com.hp.hpl.jena.sparql.engine.iterator.QueryIteratorBase.hasNext(QueryIteratorBase.java:86)
at com.hp.hpl.jena.sparql.engine.iterator.QueryIterSlice.hasNextBinding(QueryIterSlice.java:65)
at com.hp.hpl.jena.sparql.engine.iterator.QueryIteratorBase.hasNext(QueryIteratorBase.java:86)
at com.hp.hpl.jena.sparql.engine.iterator.QueryIteratorWrapper.hasNextBinding(QueryIteratorWrapper.java:30)
at com.hp.hpl.jena.sparql.engine.iterator.QueryIteratorBase.hasNext(QueryIteratorBase.java:86)
at com.hp.hpl.jena.sparql.engine.iterator.QueryIteratorWrapper.hasNextBinding(QueryIteratorWrapper.java:30)
at com.hp.hpl.jena.sparql.engine.iterator.QueryIteratorBase.hasNext(QueryIteratorBase.java:86)
at com.hp.hpl.jena.sparql.engine.ResultSetStream.hasNext(ResultSetStream.java:57)
at com.ibm.team.jfs.rdf.internal.jenatdbtx.InternalResultSet.retrieveFirstPage(InternalResultSet.java:72)
at com.ibm.team.jfs.rdf.internal.jenatdbtx.JenaTdbProvider.renderSelect(JenaTdbProvider.java:2363)
at com.ibm.team.jfs.rdf.internal.jenatdbtx.JenaTdbProvider.performSelect(JenaTdbProvider.java:1954)
at com.ibm.team.jfs.rdf.internal.jenatdbtx.JenaTdbProvider$9.run(JenaTdbProvider.java:2174)
at com.ibm.team.jfs.rdf.internal.jenatdbtx.JenaTdbProvider$9.run(JenaTdbProvider.java:1)
at com.ibm.team.jfs.rdf.internal.jenatdbtx.JenaTdbProvider.storeOperation(JenaTdbProvider.java:163)
... 56 more
but I am not sure if this is related or a different issue. I also only observe this problem in a massive concurrent environment.
> transactional behavior not sound
> --------------------------------
>
> Key: JENA-96
> URL: https://issues.apache.org/jira/browse/JENA-96
> Project: Jena
> Issue Type: Bug
> Environment: tx-tdb-0.9.0-20110809.130753-7
> Reporter: Simon Helsen
> Priority: Critical
>
> TDB-TX tx-tdb-0.9.0-20110809.130753-7 has transactionality issues. I am seeing the following stack trace:
> com.hp.hpl.jena.tdb.transaction.TDBTransactionException: Transaction has already committed or aborted
> at com.hp.hpl.jena.tdb.transaction.Transaction.abort(Transaction.java:107)
> at com.hp.hpl.jena.tdb.DatasetGraphTxn.abort(DatasetGraphTxn.java:31)
> at com.ibm.team.jfs.rdf.internal.jenatdbtx.JenaTdbProvider.storeOperation(JenaTdbProvider.java:208)
> at com.ibm.team.jfs.rdf.internal.jenatdbtx.JenaTdbProvider.replace(JenaTdbProvider.java:2411)
> at com.ibm.team.jfs.rdf.internal.jenatdbtx.JenaRdfService.replace(JenaRdfService.java:265)
> ... 14 more
> I use the following bit of code to execute writes:
> DatasetGraphTxn dsGraph = null;
> try {
> dsGraph = this.store.begin(ReadWrite.WRITE);
> Dataset ds = dsGraph.toDataset();
> Model m = ds.getNamedModel(graphName);
> E e = modelWriteActivity.run(m);
> dsGraph.commit();
> return e;
> } catch (Exception e) {
> if (dsGraph != null) {
> dsGraph.abort();
> }
> // TODO handle better
> throw new RuntimeException(e);
> } finally {
> if (dsGraph != null) {
> dsGraph.close();
> }
> //System.out.println("ModelWriteActivity: " + (System.currentTimeMillis() - t) + "ms"); //$NON-NLS-1$ //$NON-NLS-2$
> }
> The only thing I do in the ModelWriteActivity is
> model.removeAll();
> model.add(graph);
> As you can see, there is nothing in here which could have made it possible that the transaction has committed before. Moreover I only see this happening when I am executing massive concurrent reads/writes. Sequential operations do not expose this problem.
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