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Posted to dev@jena.apache.org by François-Paul Servant <fr...@gmail.com> on 2016/11/06 00:41:17 UTC

ConcurrentModificationException in JSONLD output (3.1.1 and 3.1.0)

Hi,

I've just got a ConcurrentModificationException outputing jsonld, in the following circumstance: trying to output the content of a given named graph of a TDB store, twice at the same time (output called from a jersey servlet).
The problem exists in 3.1.1 and 3.1.0. Stacktraces below.
I don’t understand. Sorry to see this only now.

fps


StackTrace with 3.1.0:
GRAVE: Servlet.service() for servlet [Jersey Web Application] in context with path [/rasse] threw exception [java.util.ConcurrentModificationException: Iterator: started at 205, now 206] with root cause
java.util.ConcurrentModificationException: Iterator: started at 205, now 206
	at org.apache.jena.tdb.sys.DatasetControlMRSW.policyError(DatasetControlMRSW.java:157)
	at org.apache.jena.tdb.sys.DatasetControlMRSW.access$000(DatasetControlMRSW.java:32)
	at org.apache.jena.tdb.sys.DatasetControlMRSW$IteratorCheckNotConcurrent.checkCourrentModification(DatasetControlMRSW.java:110)
	at org.apache.jena.tdb.sys.DatasetControlMRSW$IteratorCheckNotConcurrent.hasNext(DatasetControlMRSW.java:118)
	at org.apache.jena.atlas.iterator.Iter$2.hasNext(Iter.java:265)
	at org.apache.jena.atlas.iterator.Iter$2.hasNext(Iter.java:265)
	at org.apache.jena.atlas.iterator.Iter.hasNext(Iter.java:870)
	at org.apache.jena.util.iterator.WrappedIterator.hasNext(WrappedIterator.java:90)
	at org.apache.jena.atlas.iterator.Iter.apply(Iter.java:172)
	at org.apache.jena.atlas.iterator.Iter.apply(Iter.java:781)
	at org.apache.jena.riot.out.JsonLDWriter.addProperties(JsonLDWriter.java:172)
	at org.apache.jena.riot.out.JsonLDWriter.serialize(JsonLDWriter.java:84)
	at org.apache.jena.riot.out.JsonLDWriter.write(JsonLDWriter.java:68)
	at org.apache.jena.riot.out.JsonLDWriter.write(JsonLDWriter.java:78)
	at org.apache.jena.riot.system.RiotLib$WriterAdapter.write(RiotLib.java:376)
	at org.apache.jena.riot.adapters.RDFWriterRIOT.write(RDFWriterRIOT.java:82)
	at org.apache.jena.rdf.model.impl.ModelCom.write(ModelCom.java:355)
	at com.renault.rasse.resources.AbstractRasseResource.writeModelConvertingEuro5Uris2RasseOnes(AbstractRasseResource.java:736)
	at com.renault.rasse.resources.AbstractRasseResource$1.write(AbstractRasseResource.java:624)
	at org.glassfish.jersey.message.internal.StreamingOutputProvider.writeTo(StreamingOutputProvider.java:78)
	at org.glassfish.jersey.message.internal.StreamingOutputProvider.writeTo(StreamingOutputProvider.java:60)
	at org.glassfish.jersey.message.internal.WriterInterceptorExecutor$TerminalWriterInterceptor.invokeWriteTo(WriterInterceptorExecutor.java:265)
	at org.glassfish.jersey.message.internal.WriterInterceptorExecutor$TerminalWriterInterceptor.aroundWriteTo(WriterInterceptorExecutor.java:250)
	at org.glassfish.jersey.message.internal.WriterInterceptorExecutor.proceed(WriterInterceptorExecutor.java:162)
	at org.glassfish.jersey.server.internal.JsonWithPaddingInterceptor.aroundWriteTo(JsonWithPaddingInterceptor.java:106)
	at org.glassfish.jersey.message.internal.WriterInterceptorExecutor.proceed(WriterInterceptorExecutor.java:162)
	at org.glassfish.jersey.server.mvc.internal.TemplateMethodInterceptor.aroundWriteTo(TemplateMethodInterceptor.java:77)
	at org.glassfish.jersey.message.internal.WriterInterceptorExecutor.proceed(WriterInterceptorExecutor.java:162)
	at org.glassfish.jersey.server.internal.MappableExceptionWrapperInterceptor.aroundWriteTo(MappableExceptionWrapperInterceptor.java:86)
	at org.glassfish.jersey.message.internal.WriterInterceptorExecutor.proceed(WriterInterceptorExecutor.java:162)
	at org.glassfish.jersey.message.internal.MessageBodyFactory.writeTo(MessageBodyFactory.java:1130)
	at org.glassfish.jersey.server.ServerRuntime$Responder.writeResponse(ServerRuntime.java:711)
	at org.glassfish.jersey.server.ServerRuntime$Responder.processResponse(ServerRuntime.java:444)
	at org.glassfish.jersey.server.ServerRuntime$Responder.process(ServerRuntime.java:434)
	at org.glassfish.jersey.server.ServerRuntime$2.run(ServerRuntime.java:329)
	at org.glassfish.jersey.internal.Errors$1.call(Errors.java:271)
	at org.glassfish.jersey.internal.Errors$1.call(Errors.java:267)
	at org.glassfish.jersey.internal.Errors.process(Errors.java:315)
	at org.glassfish.jersey.internal.Errors.process(Errors.java:297)
	at org.glassfish.jersey.internal.Errors.process(Errors.java:267)
	at org.glassfish.jersey.process.internal.RequestScope.runInScope(RequestScope.java:317)
	at org.glassfish.jersey.server.ServerRuntime.process(ServerRuntime.java:305)
	at org.glassfish.jersey.server.ApplicationHandler.handle(ApplicationHandler.java:1154)
	at org.glassfish.jersey.servlet.WebComponent.serviceImpl(WebComponent.java:473)
	at org.glassfish.jersey.servlet.WebComponent.service(WebComponent.java:427)
	at org.glassfish.jersey.servlet.ServletContainer.service(ServletContainer.java:388)
	at org.glassfish.jersey.servlet.ServletContainer.service(ServletContainer.java:341)
	at org.glassfish.jersey.servlet.ServletContainer.service(ServletContainer.java:228)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:291)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
	at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:239)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:219)
	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:106)
	at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:506)
	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:142)
	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:79)
	at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:610)
	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:88)
	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:537)
	at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1081)
	at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:658)
	at org.apache.coyote.http11.Http11NioProtocol$Http11ConnectionHandler.process(Http11NioProtocol.java:222)
	at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1566)
	at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.run(NioEndpoint.java:1523)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
	at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
	at java.lang.Thread.run(Thread.java:745)

with 3.1.1
GRAVE: Servlet.service() for servlet [Jersey Web Application] in context with path [/rasse] threw exception [java.util.ConcurrentModificationException: Iterator: started at 25, now 26] with root cause
java.util.ConcurrentModificationException: Iterator: started at 25, now 26
	at org.apache.jena.tdb.sys.DatasetControlMRSW.policyError(DatasetControlMRSW.java:157)
	at org.apache.jena.tdb.sys.DatasetControlMRSW.access$000(DatasetControlMRSW.java:32)
	at org.apache.jena.tdb.sys.DatasetControlMRSW$IteratorCheckNotConcurrent.checkCourrentModification(DatasetControlMRSW.java:110)
	at org.apache.jena.tdb.sys.DatasetControlMRSW$IteratorCheckNotConcurrent.hasNext(DatasetControlMRSW.java:118)
	at org.apache.jena.atlas.iterator.Iter$2.hasNext(Iter.java:265)
	at org.apache.jena.atlas.iterator.Iter$2.hasNext(Iter.java:265)
	at org.apache.jena.atlas.iterator.Iter.hasNext(Iter.java:870)
	at org.apache.jena.util.iterator.WrappedIterator.hasNext(WrappedIterator.java:90)
	at org.apache.jena.atlas.iterator.Iter$2.hasNext(Iter.java:265)
	at org.apache.jena.atlas.iterator.Iter.hasNext(Iter.java:870)
	at org.apache.jena.riot.writer.JenaRDF2JSONLD.parse(JenaRDF2JSONLD.java:47)
	at org.apache.jena.riot.writer.JsonLDWriter.serialize(JsonLDWriter.java:183)
	at org.apache.jena.riot.writer.JsonLDWriter.write(JsonLDWriter.java:136)
	at org.apache.jena.riot.writer.JsonLDWriter.write(JsonLDWriter.java:142)
	at org.apache.jena.riot.system.RiotLib$WriterAdapter.write(RiotLib.java:376)
	at org.apache.jena.riot.adapters.RDFWriterRIOT.write(RDFWriterRIOT.java:82)
	at org.apache.jena.rdf.model.impl.ModelCom.write(ModelCom.java:357)
	at com.renault.rasse.resources.AbstractRasseResource.writeModelConvertingEuro5Uris2RasseOnes(AbstractRasseResource.java:736)
	at com.renault.rasse.resources.AbstractRasseResource$1.write(AbstractRasseResource.java:624)
	at org.glassfish.jersey.message.internal.StreamingOutputProvider.writeTo(StreamingOutputProvider.java:78)
	at org.glassfish.jersey.message.internal.StreamingOutputProvider.writeTo(StreamingOutputProvider.java:60)
	at org.glassfish.jersey.message.internal.WriterInterceptorExecutor$TerminalWriterInterceptor.invokeWriteTo(WriterInterceptorExecutor.java:265)
	at org.glassfish.jersey.message.internal.WriterInterceptorExecutor$TerminalWriterInterceptor.aroundWriteTo(WriterInterceptorExecutor.java:250)
	at org.glassfish.jersey.message.internal.WriterInterceptorExecutor.proceed(WriterInterceptorExecutor.java:162)
	at org.glassfish.jersey.server.internal.JsonWithPaddingInterceptor.aroundWriteTo(JsonWithPaddingInterceptor.java:106)
	at org.glassfish.jersey.message.internal.WriterInterceptorExecutor.proceed(WriterInterceptorExecutor.java:162)
	at org.glassfish.jersey.server.mvc.internal.TemplateMethodInterceptor.aroundWriteTo(TemplateMethodInterceptor.java:77)
	at org.glassfish.jersey.message.internal.WriterInterceptorExecutor.proceed(WriterInterceptorExecutor.java:162)
	at org.glassfish.jersey.server.internal.MappableExceptionWrapperInterceptor.aroundWriteTo(MappableExceptionWrapperInterceptor.java:86)
	at org.glassfish.jersey.message.internal.WriterInterceptorExecutor.proceed(WriterInterceptorExecutor.java:162)
	at org.glassfish.jersey.message.internal.MessageBodyFactory.writeTo(MessageBodyFactory.java:1130)
	at org.glassfish.jersey.server.ServerRuntime$Responder.writeResponse(ServerRuntime.java:711)
	at org.glassfish.jersey.server.ServerRuntime$Responder.processResponse(ServerRuntime.java:444)
	at org.glassfish.jersey.server.ServerRuntime$Responder.process(ServerRuntime.java:434)
	at org.glassfish.jersey.server.ServerRuntime$2.run(ServerRuntime.java:329)
	at org.glassfish.jersey.internal.Errors$1.call(Errors.java:271)
	at org.glassfish.jersey.internal.Errors$1.call(Errors.java:267)
	at org.glassfish.jersey.internal.Errors.process(Errors.java:315)
	at org.glassfish.jersey.internal.Errors.process(Errors.java:297)
	at org.glassfish.jersey.internal.Errors.process(Errors.java:267)
	at org.glassfish.jersey.process.internal.RequestScope.runInScope(RequestScope.java:317)
	at org.glassfish.jersey.server.ServerRuntime.process(ServerRuntime.java:305)
	at org.glassfish.jersey.server.ApplicationHandler.handle(ApplicationHandler.java:1154)
	at org.glassfish.jersey.servlet.WebComponent.serviceImpl(WebComponent.java:473)
	at org.glassfish.jersey.servlet.WebComponent.service(WebComponent.java:427)
	at org.glassfish.jersey.servlet.ServletContainer.service(ServletContainer.java:388)
	at org.glassfish.jersey.servlet.ServletContainer.service(ServletContainer.java:341)
	at org.glassfish.jersey.servlet.ServletContainer.service(ServletContainer.java:228)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:291)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
	at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:239)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:219)
	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:106)
	at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:506)
	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:142)
	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:79)
	at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:610)
	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:88)
	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:537)
	at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1081)
	at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:658)
	at org.apache.coyote.http11.Http11NioProtocol$Http11ConnectionHandler.process(Http11NioProtocol.java:222)
	at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1566)
	at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.run(NioEndpoint.java:1523)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
	at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
	at java.lang.Thread.run(Thread.java:745)

Oops forget that (was Re: ConcurrentModificationException in JSONLD output (3.1.1 and 3.1.0))

Posted by François-Paul Servant <fr...@gmail.com>.
Hi,

Andy, thank you very much for your answer, which helped to open my eyes. The problem is completely in the calling code, nothing wrong with the writer. Sorry for this false alert.

fps


> Le 6 nov. 2016 à 10:42, Andy Seaborne <an...@apache.org> a écrit :
> 
> Hi there,
> 
> In TDB1, a write transaction has a separate internal dataset object, whereas readers of the same committed state (epoch) share an internal dataset which is read-only.
> 
> The DatasetControlMRSW applies to each internal dataset.
> 
> The trigger you have come across is checking that the epoch the iterator started with is the same as it is currently when hasNext is called. It has found that the epoch has advanced.
> 
> This can occur if
> 
> 1/ multiple threads, not in a transaction, and there is an update somewhere.
> 
> 2/ There is an update on the dataset inside an iterator loop.  That does not seem to be possible here as its an iterator inside the JSON-LD writer.
> 
> 3/ if there multiple threads are acting on same transaction; you need to handle the Transaction object directly to cause this.
> 
> The problem is not at the point the stacktrace records - that only gives when it was detected.
> 
> 
> 	Andy
> 
> 
> On 06/11/16 00:41, François-Paul Servant wrote:
>> Hi,
>> 
>> I've just got a ConcurrentModificationException outputing jsonld, in the following circumstance: trying to output the content of a given named graph of a TDB store, twice at the same time (output called from a jersey servlet).
>> The problem exists in 3.1.1 and 3.1.0. Stacktraces below.
>> I don’t understand. Sorry to see this only now.
>> 
>> fps
>> 
>> 
>> StackTrace with 3.1.0:
>> GRAVE: Servlet.service() for servlet [Jersey Web Application] in context with path [/rasse] threw exception [java.util.ConcurrentModificationException: Iterator: started at 205, now 206] with root cause
>> java.util.ConcurrentModificationException: Iterator: started at 205, now 206
>> 	at org.apache.jena.tdb.sys.DatasetControlMRSW.policyError(DatasetControlMRSW.java:157)
>> 	at org.apache.jena.tdb.sys.DatasetControlMRSW.access$000(DatasetControlMRSW.java:32)
>> 	at org.apache.jena.tdb.sys.DatasetControlMRSW$IteratorCheckNotConcurrent.checkCourrentModification(DatasetControlMRSW.java:110)
>> 	at org.apache.jena.tdb.sys.DatasetControlMRSW$IteratorCheckNotConcurrent.hasNext(DatasetControlMRSW.java:118)
>> 	at org.apache.jena.atlas.iterator.Iter$2.hasNext(Iter.java:265)
>> 	at org.apache.jena.atlas.iterator.Iter$2.hasNext(Iter.java:265)
>> 	at org.apache.jena.atlas.iterator.Iter.hasNext(Iter.java:870)
>> 	at org.apache.jena.util.iterator.WrappedIterator.hasNext(WrappedIterator.java:90)
>> 	at org.apache.jena.atlas.iterator.Iter.apply(Iter.java:172)
>> 	at org.apache.jena.atlas.iterator.Iter.apply(Iter.java:781)
>> 	at org.apache.jena.riot.out.JsonLDWriter.addProperties(JsonLDWriter.java:172)
>> 	at org.apache.jena.riot.out.JsonLDWriter.serialize(JsonLDWriter.java:84)
>> 	at org.apache.jena.riot.out.JsonLDWriter.write(JsonLDWriter.java:68)
>> 	at org.apache.jena.riot.out.JsonLDWriter.write(JsonLDWriter.java:78)
>> 	at org.apache.jena.riot.system.RiotLib$WriterAdapter.write(RiotLib.java:376)
>> 	at org.apache.jena.riot.adapters.RDFWriterRIOT.write(RDFWriterRIOT.java:82)
>> 	at org.apache.jena.rdf.model.impl.ModelCom.write(ModelCom.java:355)
>> 	at com.renault.rasse.resources.AbstractRasseResource.writeModelConvertingEuro5Uris2RasseOnes(AbstractRasseResource.java:736)
>> 	at com.renault.rasse.resources.AbstractRasseResource$1.write(AbstractRasseResource.java:624)
>> 	at org.glassfish.jersey.message.internal.StreamingOutputProvider.writeTo(StreamingOutputProvider.java:78)
>> 	at org.glassfish.jersey.message.internal.StreamingOutputProvider.writeTo(StreamingOutputProvider.java:60)
>> 	at org.glassfish.jersey.message.internal.WriterInterceptorExecutor$TerminalWriterInterceptor.invokeWriteTo(WriterInterceptorExecutor.java:265)
>> 	at org.glassfish.jersey.message.internal.WriterInterceptorExecutor$TerminalWriterInterceptor.aroundWriteTo(WriterInterceptorExecutor.java:250)
>> 	at org.glassfish.jersey.message.internal.WriterInterceptorExecutor.proceed(WriterInterceptorExecutor.java:162)
>> 	at org.glassfish.jersey.server.internal.JsonWithPaddingInterceptor.aroundWriteTo(JsonWithPaddingInterceptor.java:106)
>> 	at org.glassfish.jersey.message.internal.WriterInterceptorExecutor.proceed(WriterInterceptorExecutor.java:162)
>> 	at org.glassfish.jersey.server.mvc.internal.TemplateMethodInterceptor.aroundWriteTo(TemplateMethodInterceptor.java:77)
>> 	at org.glassfish.jersey.message.internal.WriterInterceptorExecutor.proceed(WriterInterceptorExecutor.java:162)
>> 	at org.glassfish.jersey.server.internal.MappableExceptionWrapperInterceptor.aroundWriteTo(MappableExceptionWrapperInterceptor.java:86)
>> 	at org.glassfish.jersey.message.internal.WriterInterceptorExecutor.proceed(WriterInterceptorExecutor.java:162)
>> 	at org.glassfish.jersey.message.internal.MessageBodyFactory.writeTo(MessageBodyFactory.java:1130)
>> 	at org.glassfish.jersey.server.ServerRuntime$Responder.writeResponse(ServerRuntime.java:711)
>> 	at org.glassfish.jersey.server.ServerRuntime$Responder.processResponse(ServerRuntime.java:444)
>> 	at org.glassfish.jersey.server.ServerRuntime$Responder.process(ServerRuntime.java:434)
>> 	at org.glassfish.jersey.server.ServerRuntime$2.run(ServerRuntime.java:329)
>> 	at org.glassfish.jersey.internal.Errors$1.call(Errors.java:271)
>> 	at org.glassfish.jersey.internal.Errors$1.call(Errors.java:267)
>> 	at org.glassfish.jersey.internal.Errors.process(Errors.java:315)
>> 	at org.glassfish.jersey.internal.Errors.process(Errors.java:297)
>> 	at org.glassfish.jersey.internal.Errors.process(Errors.java:267)
>> 	at org.glassfish.jersey.process.internal.RequestScope.runInScope(RequestScope.java:317)
>> 	at org.glassfish.jersey.server.ServerRuntime.process(ServerRuntime.java:305)
>> 	at org.glassfish.jersey.server.ApplicationHandler.handle(ApplicationHandler.java:1154)
>> 	at org.glassfish.jersey.servlet.WebComponent.serviceImpl(WebComponent.java:473)
>> 	at org.glassfish.jersey.servlet.WebComponent.service(WebComponent.java:427)
>> 	at org.glassfish.jersey.servlet.ServletContainer.service(ServletContainer.java:388)
>> 	at org.glassfish.jersey.servlet.ServletContainer.service(ServletContainer.java:341)
>> 	at org.glassfish.jersey.servlet.ServletContainer.service(ServletContainer.java:228)
>> 	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:291)
>> 	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
>> 	at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
>> 	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:239)
>> 	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
>> 	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:219)
>> 	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:106)
>> 	at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:506)
>> 	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:142)
>> 	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:79)
>> 	at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:610)
>> 	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:88)
>> 	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:537)
>> 	at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1081)
>> 	at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:658)
>> 	at org.apache.coyote.http11.Http11NioProtocol$Http11ConnectionHandler.process(Http11NioProtocol.java:222)
>> 	at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1566)
>> 	at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.run(NioEndpoint.java:1523)
>> 	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
>> 	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
>> 	at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
>> 	at java.lang.Thread.run(Thread.java:745)
>> 
>> with 3.1.1
>> GRAVE: Servlet.service() for servlet [Jersey Web Application] in context with path [/rasse] threw exception [java.util.ConcurrentModificationException: Iterator: started at 25, now 26] with root cause
>> java.util.ConcurrentModificationException: Iterator: started at 25, now 26
>> 	at org.apache.jena.tdb.sys.DatasetControlMRSW.policyError(DatasetControlMRSW.java:157)
>> 	at org.apache.jena.tdb.sys.DatasetControlMRSW.access$000(DatasetControlMRSW.java:32)
>> 	at org.apache.jena.tdb.sys.DatasetControlMRSW$IteratorCheckNotConcurrent.checkCourrentModification(DatasetControlMRSW.java:110)
>> 	at org.apache.jena.tdb.sys.DatasetControlMRSW$IteratorCheckNotConcurrent.hasNext(DatasetControlMRSW.java:118)
>> 	at org.apache.jena.atlas.iterator.Iter$2.hasNext(Iter.java:265)
>> 	at org.apache.jena.atlas.iterator.Iter$2.hasNext(Iter.java:265)
>> 	at org.apache.jena.atlas.iterator.Iter.hasNext(Iter.java:870)
>> 	at org.apache.jena.util.iterator.WrappedIterator.hasNext(WrappedIterator.java:90)
>> 	at org.apache.jena.atlas.iterator.Iter$2.hasNext(Iter.java:265)
>> 	at org.apache.jena.atlas.iterator.Iter.hasNext(Iter.java:870)
>> 	at org.apache.jena.riot.writer.JenaRDF2JSONLD.parse(JenaRDF2JSONLD.java:47)
>> 	at org.apache.jena.riot.writer.JsonLDWriter.serialize(JsonLDWriter.java:183)
>> 	at org.apache.jena.riot.writer.JsonLDWriter.write(JsonLDWriter.java:136)
>> 	at org.apache.jena.riot.writer.JsonLDWriter.write(JsonLDWriter.java:142)
>> 	at org.apache.jena.riot.system.RiotLib$WriterAdapter.write(RiotLib.java:376)
>> 	at org.apache.jena.riot.adapters.RDFWriterRIOT.write(RDFWriterRIOT.java:82)
>> 	at org.apache.jena.rdf.model.impl.ModelCom.write(ModelCom.java:357)
>> 	at com.renault.rasse.resources.AbstractRasseResource.writeModelConvertingEuro5Uris2RasseOnes(AbstractRasseResource.java:736)
>> 	at com.renault.rasse.resources.AbstractRasseResource$1.write(AbstractRasseResource.java:624)
>> 	at org.glassfish.jersey.message.internal.StreamingOutputProvider.writeTo(StreamingOutputProvider.java:78)
>> 	at org.glassfish.jersey.message.internal.StreamingOutputProvider.writeTo(StreamingOutputProvider.java:60)
>> 	at org.glassfish.jersey.message.internal.WriterInterceptorExecutor$TerminalWriterInterceptor.invokeWriteTo(WriterInterceptorExecutor.java:265)
>> 	at org.glassfish.jersey.message.internal.WriterInterceptorExecutor$TerminalWriterInterceptor.aroundWriteTo(WriterInterceptorExecutor.java:250)
>> 	at org.glassfish.jersey.message.internal.WriterInterceptorExecutor.proceed(WriterInterceptorExecutor.java:162)
>> 	at org.glassfish.jersey.server.internal.JsonWithPaddingInterceptor.aroundWriteTo(JsonWithPaddingInterceptor.java:106)
>> 	at org.glassfish.jersey.message.internal.WriterInterceptorExecutor.proceed(WriterInterceptorExecutor.java:162)
>> 	at org.glassfish.jersey.server.mvc.internal.TemplateMethodInterceptor.aroundWriteTo(TemplateMethodInterceptor.java:77)
>> 	at org.glassfish.jersey.message.internal.WriterInterceptorExecutor.proceed(WriterInterceptorExecutor.java:162)
>> 	at org.glassfish.jersey.server.internal.MappableExceptionWrapperInterceptor.aroundWriteTo(MappableExceptionWrapperInterceptor.java:86)
>> 	at org.glassfish.jersey.message.internal.WriterInterceptorExecutor.proceed(WriterInterceptorExecutor.java:162)
>> 	at org.glassfish.jersey.message.internal.MessageBodyFactory.writeTo(MessageBodyFactory.java:1130)
>> 	at org.glassfish.jersey.server.ServerRuntime$Responder.writeResponse(ServerRuntime.java:711)
>> 	at org.glassfish.jersey.server.ServerRuntime$Responder.processResponse(ServerRuntime.java:444)
>> 	at org.glassfish.jersey.server.ServerRuntime$Responder.process(ServerRuntime.java:434)
>> 	at org.glassfish.jersey.server.ServerRuntime$2.run(ServerRuntime.java:329)
>> 	at org.glassfish.jersey.internal.Errors$1.call(Errors.java:271)
>> 	at org.glassfish.jersey.internal.Errors$1.call(Errors.java:267)
>> 	at org.glassfish.jersey.internal.Errors.process(Errors.java:315)
>> 	at org.glassfish.jersey.internal.Errors.process(Errors.java:297)
>> 	at org.glassfish.jersey.internal.Errors.process(Errors.java:267)
>> 	at org.glassfish.jersey.process.internal.RequestScope.runInScope(RequestScope.java:317)
>> 	at org.glassfish.jersey.server.ServerRuntime.process(ServerRuntime.java:305)
>> 	at org.glassfish.jersey.server.ApplicationHandler.handle(ApplicationHandler.java:1154)
>> 	at org.glassfish.jersey.servlet.WebComponent.serviceImpl(WebComponent.java:473)
>> 	at org.glassfish.jersey.servlet.WebComponent.service(WebComponent.java:427)
>> 	at org.glassfish.jersey.servlet.ServletContainer.service(ServletContainer.java:388)
>> 	at org.glassfish.jersey.servlet.ServletContainer.service(ServletContainer.java:341)
>> 	at org.glassfish.jersey.servlet.ServletContainer.service(ServletContainer.java:228)
>> 	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:291)
>> 	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
>> 	at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
>> 	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:239)
>> 	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
>> 	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:219)
>> 	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:106)
>> 	at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:506)
>> 	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:142)
>> 	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:79)
>> 	at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:610)
>> 	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:88)
>> 	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:537)
>> 	at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1081)
>> 	at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:658)
>> 	at org.apache.coyote.http11.Http11NioProtocol$Http11ConnectionHandler.process(Http11NioProtocol.java:222)
>> 	at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1566)
>> 	at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.run(NioEndpoint.java:1523)
>> 	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
>> 	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
>> 	at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
>> 	at java.lang.Thread.run(Thread.java:745)
>> 
>> 
>>

Re: ConcurrentModificationException in JSONLD output (3.1.1 and 3.1.0)

Posted by Andy Seaborne <an...@apache.org>.
Hi there,

In TDB1, a write transaction has a separate internal dataset object, 
whereas readers of the same committed state (epoch) share an internal 
dataset which is read-only.

The DatasetControlMRSW applies to each internal dataset.

The trigger you have come across is checking that the epoch the iterator 
started with is the same as it is currently when hasNext is called. It 
has found that the epoch has advanced.

This can occur if

1/ multiple threads, not in a transaction, and there is an update 
somewhere.

2/ There is an update on the dataset inside an iterator loop.  That does 
not seem to be possible here as its an iterator inside the JSON-LD writer.

3/ if there multiple threads are acting on same transaction; you need to 
handle the Transaction object directly to cause this.

The problem is not at the point the stacktrace records - that only gives 
when it was detected.


	Andy


On 06/11/16 00:41, Fran�ois-Paul Servant wrote:
> Hi,
>
> I've just got a ConcurrentModificationException outputing jsonld, in the following circumstance: trying to output the content of a given named graph of a TDB store, twice at the same time (output called from a jersey servlet).
> The problem exists in 3.1.1 and 3.1.0. Stacktraces below.
> I don\u2019t understand. Sorry to see this only now.
>
> fps
>
>
> StackTrace with 3.1.0:
> GRAVE: Servlet.service() for servlet [Jersey Web Application] in context with path [/rasse] threw exception [java.util.ConcurrentModificationException: Iterator: started at 205, now 206] with root cause
> java.util.ConcurrentModificationException: Iterator: started at 205, now 206
> 	at org.apache.jena.tdb.sys.DatasetControlMRSW.policyError(DatasetControlMRSW.java:157)
> 	at org.apache.jena.tdb.sys.DatasetControlMRSW.access$000(DatasetControlMRSW.java:32)
> 	at org.apache.jena.tdb.sys.DatasetControlMRSW$IteratorCheckNotConcurrent.checkCourrentModification(DatasetControlMRSW.java:110)
> 	at org.apache.jena.tdb.sys.DatasetControlMRSW$IteratorCheckNotConcurrent.hasNext(DatasetControlMRSW.java:118)
> 	at org.apache.jena.atlas.iterator.Iter$2.hasNext(Iter.java:265)
> 	at org.apache.jena.atlas.iterator.Iter$2.hasNext(Iter.java:265)
> 	at org.apache.jena.atlas.iterator.Iter.hasNext(Iter.java:870)
> 	at org.apache.jena.util.iterator.WrappedIterator.hasNext(WrappedIterator.java:90)
> 	at org.apache.jena.atlas.iterator.Iter.apply(Iter.java:172)
> 	at org.apache.jena.atlas.iterator.Iter.apply(Iter.java:781)
> 	at org.apache.jena.riot.out.JsonLDWriter.addProperties(JsonLDWriter.java:172)
> 	at org.apache.jena.riot.out.JsonLDWriter.serialize(JsonLDWriter.java:84)
> 	at org.apache.jena.riot.out.JsonLDWriter.write(JsonLDWriter.java:68)
> 	at org.apache.jena.riot.out.JsonLDWriter.write(JsonLDWriter.java:78)
> 	at org.apache.jena.riot.system.RiotLib$WriterAdapter.write(RiotLib.java:376)
> 	at org.apache.jena.riot.adapters.RDFWriterRIOT.write(RDFWriterRIOT.java:82)
> 	at org.apache.jena.rdf.model.impl.ModelCom.write(ModelCom.java:355)
> 	at com.renault.rasse.resources.AbstractRasseResource.writeModelConvertingEuro5Uris2RasseOnes(AbstractRasseResource.java:736)
> 	at com.renault.rasse.resources.AbstractRasseResource$1.write(AbstractRasseResource.java:624)
> 	at org.glassfish.jersey.message.internal.StreamingOutputProvider.writeTo(StreamingOutputProvider.java:78)
> 	at org.glassfish.jersey.message.internal.StreamingOutputProvider.writeTo(StreamingOutputProvider.java:60)
> 	at org.glassfish.jersey.message.internal.WriterInterceptorExecutor$TerminalWriterInterceptor.invokeWriteTo(WriterInterceptorExecutor.java:265)
> 	at org.glassfish.jersey.message.internal.WriterInterceptorExecutor$TerminalWriterInterceptor.aroundWriteTo(WriterInterceptorExecutor.java:250)
> 	at org.glassfish.jersey.message.internal.WriterInterceptorExecutor.proceed(WriterInterceptorExecutor.java:162)
> 	at org.glassfish.jersey.server.internal.JsonWithPaddingInterceptor.aroundWriteTo(JsonWithPaddingInterceptor.java:106)
> 	at org.glassfish.jersey.message.internal.WriterInterceptorExecutor.proceed(WriterInterceptorExecutor.java:162)
> 	at org.glassfish.jersey.server.mvc.internal.TemplateMethodInterceptor.aroundWriteTo(TemplateMethodInterceptor.java:77)
> 	at org.glassfish.jersey.message.internal.WriterInterceptorExecutor.proceed(WriterInterceptorExecutor.java:162)
> 	at org.glassfish.jersey.server.internal.MappableExceptionWrapperInterceptor.aroundWriteTo(MappableExceptionWrapperInterceptor.java:86)
> 	at org.glassfish.jersey.message.internal.WriterInterceptorExecutor.proceed(WriterInterceptorExecutor.java:162)
> 	at org.glassfish.jersey.message.internal.MessageBodyFactory.writeTo(MessageBodyFactory.java:1130)
> 	at org.glassfish.jersey.server.ServerRuntime$Responder.writeResponse(ServerRuntime.java:711)
> 	at org.glassfish.jersey.server.ServerRuntime$Responder.processResponse(ServerRuntime.java:444)
> 	at org.glassfish.jersey.server.ServerRuntime$Responder.process(ServerRuntime.java:434)
> 	at org.glassfish.jersey.server.ServerRuntime$2.run(ServerRuntime.java:329)
> 	at org.glassfish.jersey.internal.Errors$1.call(Errors.java:271)
> 	at org.glassfish.jersey.internal.Errors$1.call(Errors.java:267)
> 	at org.glassfish.jersey.internal.Errors.process(Errors.java:315)
> 	at org.glassfish.jersey.internal.Errors.process(Errors.java:297)
> 	at org.glassfish.jersey.internal.Errors.process(Errors.java:267)
> 	at org.glassfish.jersey.process.internal.RequestScope.runInScope(RequestScope.java:317)
> 	at org.glassfish.jersey.server.ServerRuntime.process(ServerRuntime.java:305)
> 	at org.glassfish.jersey.server.ApplicationHandler.handle(ApplicationHandler.java:1154)
> 	at org.glassfish.jersey.servlet.WebComponent.serviceImpl(WebComponent.java:473)
> 	at org.glassfish.jersey.servlet.WebComponent.service(WebComponent.java:427)
> 	at org.glassfish.jersey.servlet.ServletContainer.service(ServletContainer.java:388)
> 	at org.glassfish.jersey.servlet.ServletContainer.service(ServletContainer.java:341)
> 	at org.glassfish.jersey.servlet.ServletContainer.service(ServletContainer.java:228)
> 	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:291)
> 	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
> 	at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
> 	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:239)
> 	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
> 	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:219)
> 	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:106)
> 	at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:506)
> 	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:142)
> 	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:79)
> 	at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:610)
> 	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:88)
> 	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:537)
> 	at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1081)
> 	at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:658)
> 	at org.apache.coyote.http11.Http11NioProtocol$Http11ConnectionHandler.process(Http11NioProtocol.java:222)
> 	at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1566)
> 	at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.run(NioEndpoint.java:1523)
> 	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
> 	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
> 	at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
> 	at java.lang.Thread.run(Thread.java:745)
>
> with 3.1.1
> GRAVE: Servlet.service() for servlet [Jersey Web Application] in context with path [/rasse] threw exception [java.util.ConcurrentModificationException: Iterator: started at 25, now 26] with root cause
> java.util.ConcurrentModificationException: Iterator: started at 25, now 26
> 	at org.apache.jena.tdb.sys.DatasetControlMRSW.policyError(DatasetControlMRSW.java:157)
> 	at org.apache.jena.tdb.sys.DatasetControlMRSW.access$000(DatasetControlMRSW.java:32)
> 	at org.apache.jena.tdb.sys.DatasetControlMRSW$IteratorCheckNotConcurrent.checkCourrentModification(DatasetControlMRSW.java:110)
> 	at org.apache.jena.tdb.sys.DatasetControlMRSW$IteratorCheckNotConcurrent.hasNext(DatasetControlMRSW.java:118)
> 	at org.apache.jena.atlas.iterator.Iter$2.hasNext(Iter.java:265)
> 	at org.apache.jena.atlas.iterator.Iter$2.hasNext(Iter.java:265)
> 	at org.apache.jena.atlas.iterator.Iter.hasNext(Iter.java:870)
> 	at org.apache.jena.util.iterator.WrappedIterator.hasNext(WrappedIterator.java:90)
> 	at org.apache.jena.atlas.iterator.Iter$2.hasNext(Iter.java:265)
> 	at org.apache.jena.atlas.iterator.Iter.hasNext(Iter.java:870)
> 	at org.apache.jena.riot.writer.JenaRDF2JSONLD.parse(JenaRDF2JSONLD.java:47)
> 	at org.apache.jena.riot.writer.JsonLDWriter.serialize(JsonLDWriter.java:183)
> 	at org.apache.jena.riot.writer.JsonLDWriter.write(JsonLDWriter.java:136)
> 	at org.apache.jena.riot.writer.JsonLDWriter.write(JsonLDWriter.java:142)
> 	at org.apache.jena.riot.system.RiotLib$WriterAdapter.write(RiotLib.java:376)
> 	at org.apache.jena.riot.adapters.RDFWriterRIOT.write(RDFWriterRIOT.java:82)
> 	at org.apache.jena.rdf.model.impl.ModelCom.write(ModelCom.java:357)
> 	at com.renault.rasse.resources.AbstractRasseResource.writeModelConvertingEuro5Uris2RasseOnes(AbstractRasseResource.java:736)
> 	at com.renault.rasse.resources.AbstractRasseResource$1.write(AbstractRasseResource.java:624)
> 	at org.glassfish.jersey.message.internal.StreamingOutputProvider.writeTo(StreamingOutputProvider.java:78)
> 	at org.glassfish.jersey.message.internal.StreamingOutputProvider.writeTo(StreamingOutputProvider.java:60)
> 	at org.glassfish.jersey.message.internal.WriterInterceptorExecutor$TerminalWriterInterceptor.invokeWriteTo(WriterInterceptorExecutor.java:265)
> 	at org.glassfish.jersey.message.internal.WriterInterceptorExecutor$TerminalWriterInterceptor.aroundWriteTo(WriterInterceptorExecutor.java:250)
> 	at org.glassfish.jersey.message.internal.WriterInterceptorExecutor.proceed(WriterInterceptorExecutor.java:162)
> 	at org.glassfish.jersey.server.internal.JsonWithPaddingInterceptor.aroundWriteTo(JsonWithPaddingInterceptor.java:106)
> 	at org.glassfish.jersey.message.internal.WriterInterceptorExecutor.proceed(WriterInterceptorExecutor.java:162)
> 	at org.glassfish.jersey.server.mvc.internal.TemplateMethodInterceptor.aroundWriteTo(TemplateMethodInterceptor.java:77)
> 	at org.glassfish.jersey.message.internal.WriterInterceptorExecutor.proceed(WriterInterceptorExecutor.java:162)
> 	at org.glassfish.jersey.server.internal.MappableExceptionWrapperInterceptor.aroundWriteTo(MappableExceptionWrapperInterceptor.java:86)
> 	at org.glassfish.jersey.message.internal.WriterInterceptorExecutor.proceed(WriterInterceptorExecutor.java:162)
> 	at org.glassfish.jersey.message.internal.MessageBodyFactory.writeTo(MessageBodyFactory.java:1130)
> 	at org.glassfish.jersey.server.ServerRuntime$Responder.writeResponse(ServerRuntime.java:711)
> 	at org.glassfish.jersey.server.ServerRuntime$Responder.processResponse(ServerRuntime.java:444)
> 	at org.glassfish.jersey.server.ServerRuntime$Responder.process(ServerRuntime.java:434)
> 	at org.glassfish.jersey.server.ServerRuntime$2.run(ServerRuntime.java:329)
> 	at org.glassfish.jersey.internal.Errors$1.call(Errors.java:271)
> 	at org.glassfish.jersey.internal.Errors$1.call(Errors.java:267)
> 	at org.glassfish.jersey.internal.Errors.process(Errors.java:315)
> 	at org.glassfish.jersey.internal.Errors.process(Errors.java:297)
> 	at org.glassfish.jersey.internal.Errors.process(Errors.java:267)
> 	at org.glassfish.jersey.process.internal.RequestScope.runInScope(RequestScope.java:317)
> 	at org.glassfish.jersey.server.ServerRuntime.process(ServerRuntime.java:305)
> 	at org.glassfish.jersey.server.ApplicationHandler.handle(ApplicationHandler.java:1154)
> 	at org.glassfish.jersey.servlet.WebComponent.serviceImpl(WebComponent.java:473)
> 	at org.glassfish.jersey.servlet.WebComponent.service(WebComponent.java:427)
> 	at org.glassfish.jersey.servlet.ServletContainer.service(ServletContainer.java:388)
> 	at org.glassfish.jersey.servlet.ServletContainer.service(ServletContainer.java:341)
> 	at org.glassfish.jersey.servlet.ServletContainer.service(ServletContainer.java:228)
> 	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:291)
> 	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
> 	at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
> 	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:239)
> 	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
> 	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:219)
> 	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:106)
> 	at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:506)
> 	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:142)
> 	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:79)
> 	at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:610)
> 	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:88)
> 	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:537)
> 	at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1081)
> 	at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:658)
> 	at org.apache.coyote.http11.Http11NioProtocol$Http11ConnectionHandler.process(Http11NioProtocol.java:222)
> 	at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1566)
> 	at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.run(NioEndpoint.java:1523)
> 	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
> 	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
> 	at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
> 	at java.lang.Thread.run(Thread.java:745)
>
>
>