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Posted to dev@jena.apache.org by "Benson Margulies (JIRA)" <ji...@apache.org> on 2011/02/03 03:06:29 UTC
[jira] Created: (JENA-39) Current modification exception with
current TDB snapshot
Current modification exception with current TDB snapshot
--------------------------------------------------------
Key: JENA-39
URL: https://issues.apache.org/jira/browse/JENA-39
Project: Jena
Issue Type: Bug
Reporter: Benson Margulies
Attachments: q.ru
I am running with a snapshot current as of 2 Feb 2011.
Caused by: java.util.ConcurrentModificationException: Iterator: started at 266529, now 266530
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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[jira] Commented: (JENA-39) Current modification exception with
current TDB snapshot
Posted by "Andy Seaborne (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/JENA-39?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12990106#comment-12990106 ]
Andy Seaborne commented on JENA-39:
-----------------------------------
Application reported to have a sync thread running which was not locked against the reading thread.
> Current modification exception with current TDB snapshot
> --------------------------------------------------------
>
> Key: JENA-39
> URL: https://issues.apache.org/jira/browse/JENA-39
> Project: Jena
> Issue Type: Bug
> Reporter: Benson Margulies
> Attachments: q.ru
>
>
> I am running with a snapshot current as of 2 Feb 2011.
> Caused by: java.util.ConcurrentModificationException: Iterator: started at 266529, now 266530
> 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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[jira] Resolved: (JENA-39) Current modification exception with
current TDB snapshot
Posted by "Andy Seaborne (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/JENA-39?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Andy Seaborne resolved JENA-39.
-------------------------------
Resolution: Fixed
Works for me
tdb-0.8.10-20110201.195216-3.zip
TDBROOT=tmp/TDB-0.8.10-SNAPSHOT/ tdbloader --loc=DB ~/Desktop/1k_news.nq.gz
TDBROOT=tmp/TDB-0.8.10-SNAPSHOT/ tdbquery --loc=DB --file Q.rq
Ubuntu 64 bit.
java version "1.6.0_20"
OpenJDK Runtime Environment (IcedTea6 1.9.5) (6b20-1.9.5-0ubuntu1)
OpenJDK 64-Bit Server VM (build 19.0-b09, mixed mode)
> Current modification exception with current TDB snapshot
> --------------------------------------------------------
>
> Key: JENA-39
> URL: https://issues.apache.org/jira/browse/JENA-39
> Project: Jena
> Issue Type: Bug
> Reporter: Benson Margulies
> Attachments: q.ru
>
>
> I am running with a snapshot current as of 2 Feb 2011.
> Caused by: java.util.ConcurrentModificationException: Iterator: started at 266529, now 266530
> 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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[jira] Commented: (JENA-39) Current modification exception with
current TDB snapshot
Posted by "Benson Margulies (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/JENA-39?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12990056#comment-12990056 ]
Benson Margulies commented on JENA-39:
--------------------------------------
Hmm. Well, it happened to me in my application that has tdb embedded. (MacOSX, 10.6.6, 1.6.0_22-b04-307-10M3261), as you saw from the backtrace. I did a local build, I'll double-check that process.
> Current modification exception with current TDB snapshot
> --------------------------------------------------------
>
> Key: JENA-39
> URL: https://issues.apache.org/jira/browse/JENA-39
> Project: Jena
> Issue Type: Bug
> Reporter: Benson Margulies
> Attachments: q.ru
>
>
> I am running with a snapshot current as of 2 Feb 2011.
> Caused by: java.util.ConcurrentModificationException: Iterator: started at 266529, now 266530
> 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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[jira] Closed: (JENA-39) Current modification exception with
current TDB snapshot
Posted by "Andy Seaborne (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/JENA-39?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Andy Seaborne closed JENA-39.
-----------------------------
Assignee: Andy Seaborne
> Current modification exception with current TDB snapshot
> --------------------------------------------------------
>
> Key: JENA-39
> URL: https://issues.apache.org/jira/browse/JENA-39
> Project: Jena
> Issue Type: Bug
> Reporter: Benson Margulies
> Assignee: Andy Seaborne
> Attachments: q.ru
>
>
> I am running with a snapshot current as of 2 Feb 2011.
> Caused by: java.util.ConcurrentModificationException: Iterator: started at 266529, now 266530
> 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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