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From Benson Margulies <bimargul...@gmail.com>
Subject Re: current tdb shapshot has new problem
Date Thu, 03 Feb 2011 13:40:41 GMT
I've reproduced your success from command line. So I need to go sort
out what happens when integrated into my test code.

On Thu, Feb 3, 2011 at 8:38 AM, Benson Margulies <bimargulies@gmail.com> wrote:
> There are no updates happening in my code, in spite of my
> misapplication of the suffix convention.
>
> I'm working on a test case for you.
>
> On Thu, Feb 3, 2011 at 4:33 AM, Andy Seaborne
> <andy.seaborne@epimorphics.com> wrote:
>> Works for me (on the test data from before).
>>
>> tdbloader --loc DB ~/Desktop/1k_news.nq.gz
>> tdbquery --loc=DB --file=Q.rq
>> => result model.
>>
>> Iterators count as read operations - you can't update a model and continue
>> to iterate over results (which is what CONSTRUCT is doing).
>>
>> sync'ing a dataset is a write operation.
>>
>>        Andy
>>
>> PS The file extension for SPARQL queries is ".rq".  The extension for SPARQL
>> Update is ".ru" (where "is" is defined to be "when the W3C registers the
>> MIME type").
>>
>>
>> On 03/02/11 02:02, Benson Margulies wrote:
>>>
>>> Jira shortly I hope.
>>>
>>> Caused by: java.util.ConcurrentModificationException: Iterator:
>>> started at 266532, now 266533
>>>        at
>>> com.hp.hpl.jena.tdb.sys.ConcurrencyPolicyMRSW.policyError(ConcurrencyPolicyMRSW.java:127)
>>>        at
>>> com.hp.hpl.jena.tdb.sys.ConcurrencyPolicyMRSW.access$000(ConcurrencyPolicyMRSW.java:18)
>>>        at
>>> com.hp.hpl.jena.tdb.sys.ConcurrencyPolicyMRSW$IteratorCheckNotConcurrent.checkCourrentModification(ConcurrencyPolicyMRSW.java:90)
>>>        at
>>> com.hp.hpl.jena.tdb.sys.ConcurrencyPolicyMRSW$IteratorCheckNotConcurrent.hasNext(ConcurrencyPolicyMRSW.java:97)
>>>        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:596)
>>>        at
>>> org.openjena.atlas.iterator.RepeatApplyIterator.hasNext(RepeatApplyIterator.java:46)
>>>        at org.openjena.atlas.iterator.Iter$4.hasNext(Iter.java:262)
>>>        at
>>> com.hp.hpl.jena.sparql.engine.iterator.QueryIterPlainWrapper.hasNextBinding(QueryIterPlainWrapper.java:42)
>>>        at
>>> com.hp.hpl.jena.sparql.engine.iterator.QueryIteratorBase.hasNext(QueryIteratorBase.java:66)
>>>        at
>>> com.hp.hpl.jena.sparql.engine.iterator.QueryIterProcessBinding.hasNextBinding(QueryIterProcessBinding.java:48)
>>>        at
>>> com.hp.hpl.jena.sparql.engine.iterator.QueryIteratorBase.hasNext(QueryIteratorBase.java:66)
>>>        at
>>> com.hp.hpl.jena.sparql.engine.iterator.QueryIterConcat.hasNextBinding(QueryIterConcat.java:70)
>>>        at
>>> com.hp.hpl.jena.sparql.engine.iterator.QueryIteratorBase.hasNext(QueryIteratorBase.java:66)
>>>        at
>>> com.hp.hpl.jena.sparql.engine.iterator.QueryIterRepeatApply.hasNextBinding(QueryIterRepeatApply.java:57)
>>>        at
>>> com.hp.hpl.jena.sparql.engine.iterator.QueryIteratorBase.hasNext(QueryIteratorBase.java:66)
>>>        at
>>> com.hp.hpl.jena.sparql.engine.iterator.QueryIterProcessBinding.hasNextBinding(QueryIterProcessBinding.java:48)
>>>        at
>>> com.hp.hpl.jena.sparql.engine.iterator.QueryIteratorBase.hasNext(QueryIteratorBase.java:66)
>>>        at
>>> com.hp.hpl.jena.sparql.engine.iterator.QueryIterDefaulting.hasNextBinding(QueryIterDefaulting.java:43)
>>>        at
>>> com.hp.hpl.jena.sparql.engine.iterator.QueryIteratorBase.hasNext(QueryIteratorBase.java:66)
>>>        at
>>> com.hp.hpl.jena.sparql.engine.iterator.QueryIterRepeatApply.hasNextBinding(QueryIterRepeatApply.java:57)
>>>        at
>>> com.hp.hpl.jena.sparql.engine.iterator.QueryIteratorBase.hasNext(QueryIteratorBase.java:66)
>>>        at
>>> com.hp.hpl.jena.sparql.engine.iterator.QueryIteratorWrapper.hasNextBinding(QueryIteratorWrapper.java:28)
>>>        at
>>> com.hp.hpl.jena.sparql.engine.iterator.QueryIteratorBase.hasNext(QueryIteratorBase.java:66)
>>>        at
>>> com.hp.hpl.jena.sparql.engine.iterator.QueryIteratorWrapper.hasNextBinding(QueryIteratorWrapper.java:28)
>>>        at
>>> com.hp.hpl.jena.sparql.engine.iterator.QueryIteratorBase.hasNext(QueryIteratorBase.java:66)
>>>        at
>>> com.hp.hpl.jena.sparql.engine.QueryExecutionBase.execConstruct(QueryExecutionBase.java:117)
>>>        at
>>> com.basistech.jug.rdfdb.jena.JenaStore.executeConstructQuery(JenaStore.java:127)
>>>        at
>>> com.basistech.jug.rdfdb.jena.QueryManager.runConstructQuery(QueryManager.java:59)
>>>        at
>>> com.basistech.jug.rdfdb.service.query.QueryService.constructQuery(QueryService.java:166)
>>>        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
>>>        at
>>> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
>>>        at
>>> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
>>>        at java.lang.reflect.Method.invoke(Method.java:597)
>>>        at
>>> org.apache.cxf.service.invoker.AbstractInvoker.performInvocation(AbstractInvoker.java:173)
>>>        at
>>> org.apache.cxf.service.invoker.AbstractInvoker.invoke(AbstractInvoker.java:89)
>>>        ... 29 more
>>
>

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