I saw something odd today (see trace below). I have a Fuseki/TDB server that receives some bursts of updates and queries.
I know that this error appears to have failed during results iteration, but this is the first time we’ve seen this. One guess was an update locking problem. Does this make sense? Is there a better answer (that makes Fuseki look better? :)
Among the things we changed before this are 1) moved the store to an SSD drive, and 2) I removed my 0.1 second delay between updates.
The server did seem to recover from this, but I’m told it might have taken a while.
Is this an ephemeral thing? Something I need to look into? An internal thing?
Thanks,
Mark
SELECT ?O ?ObsType ?Timestamp ?S ?E ?Payload
WHERE
{ ?E <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> :E
{ SELECT ?E ?O ?OType ?Timestamp
WHERE
{ ?O :contextEntity ?E .
?O :oType ?ObsType .
?O :generatedAtTimeMilli ?Timestamp
ORDER BY DESC(?Timestamp)
LIMIT 1
{ SELECT ?E ?S
WHERE
{ ?SH :contextEntity ?E .
?SH :generatedAtTimeMilli ?Timestamp .
?SH :bestRank ?SHBestRank .
?SH :s ?S
ORDER BY DESC(?Timestamp) ASC(?SHBestRank)
LIMIT 1
OPTIONAL
{ ?O btn:payload ?Payload }
14:46:19 INFO [4918] exec/select
14:46:20 WARN Open iterator: QueryIterSingleton/7998397
14:46:20 WARN Open iterator: QueryIterBlockTriples/7998398
14:46:20 WARN Open iterator: QueryIterTriplePattern/7998399
14:46:20 WARN Open iterator: QueryIterTriplePattern/7998400
14:46:20 WARN Open iterator: QueryIterTriplePattern/7998401
14:46:20 WARN Open iterator: QueryIterTriplePattern/7998402
14:46:20 WARN Open iterator: QueryIterTriplePattern$TripleMapper/7998405
14:46:20 WARN Open iterator: QueryIterTriplePattern$TripleMapper/7998453
14:46:20 WARN Open iterator: QueryIterTriplePattern$TripleMapper/7998454
14:46:20 WARN Open iterator: QueryIterTriplePattern$TripleMapper/7998455
14:46:20 WARN [4918] RC = 500 : RecordRangeIterator: records not strictly increasing: 0000000005a1b314000000000000761b00000000000066f5 // 000000000000004b00000000000000bd0000000003835bbe
com.hp.hpl.jena.tdb.base.StorageException: RecordRangeIterator: records not strictly increasing: 0000000005a1b314000000000000761b00000000000066f5 // 000000000000004b00000000000000bd0000000003835bbe
at com.hp.hpl.jena.tdb.base.recordbuffer.RecordRangeIterator.hasNext(RecordRangeIterator.java:124)
at org.apache.jena.atlas.iterator.Iter$4.hasNext(Iter.java:317)
at com.hp.hpl.jena.tdb.sys.DatasetControlMRSW$IteratorCheckNotConcurrent.hasNext(DatasetControlMRSW.java:119)
at org.apache.jena.atlas.iterator.Iter$4.hasNext(Iter.java:317)
at org.apache.jena.atlas.iterator.Iter$4.hasNext(Iter.java:317)
at org.apache.jena.atlas.iterator.Iter$4.hasNext(Iter.java:317)
at org.apache.jena.atlas.iterator.Iter.hasNext(Iter.java:915)
at com.hp.hpl.jena.util.iterator.WrappedIterator.hasNext(WrappedIterator.java:90)
at com.hp.hpl.jena.util.iterator.NiceIterator$1.hasNext(NiceIterator.java:103)
at com.hp.hpl.jena.util.iterator.NiceIterator$1.hasNext(NiceIterator.java:103)
at com.hp.hpl.jena.reasoner.rulesys.impl.TopLevelTripleMatchFrame.nextMatch(TopLevelTripleMatchFrame.java:55)
at com.hp.hpl.jena.reasoner.rulesys.impl.LPInterpreter.run(LPInterpreter.java:330)
at com.hp.hpl.jena.reasoner.rulesys.impl.LPInterpreter.next(LPInterpreter.java:192)
at com.hp.hpl.jena.reasoner.rulesys.impl.LPTopGoalIterator.moveForward(LPTopGoalIterator.java:100)
at com.hp.hpl.jena.reasoner.rulesys.impl.LPTopGoalIterator.hasNext(LPTopGoalIterator.java:222)
at com.hp.hpl.jena.util.iterator.WrappedIterator.hasNext(WrappedIterator.java:90)
at com.hp.hpl.jena.util.iterator.WrappedIterator.hasNext(WrappedIterator.java:90)
at com.hp.hpl.jena.util.iterator.FilterIterator.hasNext(FilterIterator.java:54)
at com.hp.hpl.jena.util.iterator.WrappedIterator.hasNext(WrappedIterator.java:90)
at com.hp.hpl.jena.util.iterator.FilterIterator.hasNext(FilterIterator.java:54)
at com.hp.hpl.jena.sparql.engine.iterator.QueryIterTriplePattern$TripleMapper.hasNextBinding(QueryIterTriplePattern.java:151)
at com.hp.hpl.jena.sparql.engine.iterator.QueryIteratorBase.hasNext(QueryIteratorBase.java:112)
at com.hp.hpl.jena.sparql.engine.iterator.QueryIterRepeatApply.hasNextBinding(QueryIterRepeatApply.java:76)
at com.hp.hpl.jena.sparql.engine.iterator.QueryIteratorBase.hasNext(QueryIteratorBase.java:112)
at com.hp.hpl.jena.sparql.engine.iterator.QueryIterBlockTriples.hasNextBinding(QueryIterBlockTriples.java:64)
at com.hp.hpl.jena.sparql.engine.iterator.QueryIteratorBase.hasNext(QueryIteratorBase.java:112)
at com.hp.hpl.jena.sparql.engine.iterator.QueryIterTopN$1.initializeIterator(QueryIterTopN.java:97)
at org.apache.jena.atlas.iterator.IteratorDelayedInitialization.init(IteratorDelayedInitialization.java:40)
at org.apache.jena.atlas.iterator.IteratorDelayedInitialization.hasNext(IteratorDelayedInitialization.java:50)
at com.hp.hpl.jena.sparql.engine.iterator.QueryIterPlainWrapper.hasNextBinding(QueryIterPlainWrapper.java:54)
at com.hp.hpl.jena.sparql.engine.iterator.QueryIteratorBase.hasNext(QueryIteratorBase.java:112)
at com.hp.hpl.jena.sparql.engine.iterator.QueryIterConvert.hasNextBinding(QueryIterConvert.java:59)
at com.hp.hpl.jena.sparql.engine.iterator.QueryIteratorBase.hasNext(QueryIteratorBase.java:112)
at com.hp.hpl.jena.sparql.engine.iterator.QueryIterRepeatApply.hasNextBinding(QueryIterRepeatApply.java:76)
at com.hp.hpl.jena.sparql.engine.iterator.QueryIteratorBase.hasNext(QueryIteratorBase.java:112)
at com.hp.hpl.jena.sparql.engine.iterator.QueryIterRepeatApply.makeNextStage(QueryIterRepeatApply.java:103)
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:112)
at com.hp.hpl.jena.sparql.engine.iterator.QueryIterConvert.hasNextBinding(QueryIterConvert.java:59)
at com.hp.hpl.jena.sparql.engine.iterator.QueryIteratorBase.hasNext(QueryIteratorBase.java:112)
at com.hp.hpl.jena.sparql.engine.iterator.QueryIteratorWrapper.hasNextBinding(QueryIteratorWrapper.java:40)
at com.hp.hpl.jena.sparql.engine.iterator.QueryIteratorBase.hasNext(QueryIteratorBase.java:112)
at com.hp.hpl.jena.sparql.engine.iterator.QueryIteratorWrapper.hasNextBinding(QueryIteratorWrapper.java:40)
at com.hp.hpl.jena.sparql.engine.iterator.QueryIteratorBase.hasNext(QueryIteratorBase.java:112)
at com.hp.hpl.jena.sparql.engine.ResultSetStream.hasNext(ResultSetStream.java:75)
at com.hp.hpl.jena.sparql.resultset.ResultSetApply.apply(ResultSetApply.java:41)
at com.hp.hpl.jena.sparql.resultset.XMLOutput.format(XMLOutput.java:52)
at com.hp.hpl.jena.query.ResultSetFormatter.outputAsXML(ResultSetFormatter.java:482)
at org.apache.jena.fuseki.servlets.ResponseResultSet$1.output(ResponseResultSet.java:191)
at org.apache.jena.fuseki.servlets.ResponseResultSet.output(ResponseResultSet.java:283)
at org.apache.jena.fuseki.servlets.ResponseResultSet.sparqlXMLOutput(ResponseResultSet.java:195)
at org.apache.jena.fuseki.servlets.ResponseResultSet.doResponseResultSet$(ResponseResultSet.java:141)
at org.apache.jena.fuseki.servlets.ResponseResultSet.doResponseResultSet(ResponseResultSet.java:88)
at org.apache.jena.fuseki.servlets.SPARQL_Query.sendResults(SPARQL_Query.java:348)
at org.apache.jena.fuseki.servlets.SPARQL_Query.execute(SPARQL_Query.java:244)
at org.apache.jena.fuseki.servlets.SPARQL_Query.executeWithParameter(SPARQL_Query.java:195)
at org.apache.jena.fuseki.servlets.SPARQL_Query.perform(SPARQL_Query.java:80)
at org.apache.jena.fuseki.servlets.SPARQL_ServletBase.executeLifecycle(SPARQL_ServletBase.java:171)
at org.apache.jena.fuseki.servlets.SPARQL_ServletBase.executeAction(SPARQL_ServletBase.java:152)
at org.apache.jena.fuseki.servlets.SPARQL_ServletBase.execCommonWorker(SPARQL_ServletBase.java:140)
at org.apache.jena.fuseki.servlets.SPARQL_ServletBase.doCommon(SPARQL_ServletBase.java:69)
at org.apache.jena.fuseki.servlets.SPARQL_Query.doGet(SPARQL_Query.java:61)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:735)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:848)
at org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:684)
at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1448)
at org.eclipse.jetty.servlets.UserAgentFilter.doFilter(UserAgentFilter.java:82)
at org.eclipse.jetty.servlets.GzipFilter.doFilter(GzipFilter.java:294)
at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1419)
at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:455)
at org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:229)
at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1075)
at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:384)
at org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:193)
at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1009)
at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:135)
at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:116)
at org.eclipse.jetty.server.Server.handle(Server.java:370)
at org.eclipse.jetty.server.AbstractHttpConnection.handleRequest(AbstractHttpConnection.java:489)
at org.eclipse.jetty.server.BlockingHttpConnection.handleRequest(BlockingHttpConnection.java:53)
at org.eclipse.jetty.server.AbstractHttpConnection.headerComplete(AbstractHttpConnection.java:949)
at org.eclipse.jetty.server.AbstractHttpConnection$RequestHandler.headerComplete(AbstractHttpConnection.java:1011)
at org.eclipse.jetty.http.HttpParser.parseNext(HttpParser.java:644)
at org.eclipse.jetty.http.HttpParser.parseAvailable(HttpParser.java:235)
at org.eclipse.jetty.server.BlockingHttpConnection.handle(BlockingHttpConnection.java:72)
at org.eclipse.jetty.server.nio.BlockingChannelConnector$BlockingChannelEndPoint.run(BlockingChannelConnector.java:298)
at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:608)
at org.eclipse.jetty.util.thread.QueuedThreadPool$3.run(QueuedThreadPool.java:543)
at java.lang.Thread.run(Thread.java:745)
14:46:20 INFO [4918] Content-Type application/sparql-r?O?O
I know that this error appears to have failed during results iteration, but this is the first time we’ve seen this. One guess was an update locking problem. Does this make sense? Is there a better answer (that makes Fuseki look better? :)
Among the things we changed before this are 1) moved the store to an SSD drive, and 2) I removed my 0.1 second delay between updates.
The server did seem to recover from this, but I’m told it might have taken a while.
Is this an ephemeral thing? Something I need to look into? An internal thing?
Thanks,
Mark
SELECT ?O ?ObsType ?Timestamp ?S ?E ?Payload
WHERE
{ ?E <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> :E
{ SELECT ?E ?O ?OType ?Timestamp
WHERE
{ ?O :contextEntity ?E .
?O :oType ?ObsType .
?O :generatedAtTimeMilli ?Timestamp
ORDER BY DESC(?Timestamp)
LIMIT 1
{ SELECT ?E ?S
WHERE
{ ?SH :contextEntity ?E .
?SH :generatedAtTimeMilli ?Timestamp .
?SH :bestRank ?SHBestRank .
?SH :s ?S
ORDER BY DESC(?Timestamp) ASC(?SHBestRank)
LIMIT 1
OPTIONAL
{ ?O btn:payload ?Payload }
14:46:19 INFO [4918] exec/select
14:46:20 WARN Open iterator: QueryIterSingleton/7998397
14:46:20 WARN Open iterator: QueryIterBlockTriples/7998398
14:46:20 WARN Open iterator: QueryIterTriplePattern/7998399
14:46:20 WARN Open iterator: QueryIterTriplePattern/7998400
14:46:20 WARN Open iterator: QueryIterTriplePattern/7998401
14:46:20 WARN Open iterator: QueryIterTriplePattern/7998402
14:46:20 WARN Open iterator: QueryIterTriplePattern$TripleMapper/7998405
14:46:20 WARN Open iterator: QueryIterTriplePattern$TripleMapper/7998453
14:46:20 WARN Open iterator: QueryIterTriplePattern$TripleMapper/7998454
14:46:20 WARN Open iterator: QueryIterTriplePattern$TripleMapper/7998455
14:46:20 WARN [4918] RC = 500 : RecordRangeIterator: records not strictly increasing: 0000000005a1b314000000000000761b00000000000066f5 // 000000000000004b00000000000000bd0000000003835bbe
com.hp.hpl.jena.tdb.base.StorageException: RecordRangeIterator: records not strictly increasing: 0000000005a1b314000000000000761b00000000000066f5 // 000000000000004b00000000000000bd0000000003835bbe
at com.hp.hpl.jena.tdb.base.recordbuffer.RecordRangeIterator.hasNext(RecordRangeIterator.java:124)
at org.apache.jena.atlas.iterator.Iter$4.hasNext(Iter.java:317)
at com.hp.hpl.jena.tdb.sys.DatasetControlMRSW$IteratorCheckNotConcurrent.hasNext(DatasetControlMRSW.java:119)
at org.apache.jena.atlas.iterator.Iter$4.hasNext(Iter.java:317)
at org.apache.jena.atlas.iterator.Iter$4.hasNext(Iter.java:317)
at org.apache.jena.atlas.iterator.Iter$4.hasNext(Iter.java:317)
at org.apache.jena.atlas.iterator.Iter.hasNext(Iter.java:915)
at com.hp.hpl.jena.util.iterator.WrappedIterator.hasNext(WrappedIterator.java:90)
at com.hp.hpl.jena.util.iterator.NiceIterator$1.hasNext(NiceIterator.java:103)
at com.hp.hpl.jena.util.iterator.NiceIterator$1.hasNext(NiceIterator.java:103)
at com.hp.hpl.jena.reasoner.rulesys.impl.TopLevelTripleMatchFrame.nextMatch(TopLevelTripleMatchFrame.java:55)
at com.hp.hpl.jena.reasoner.rulesys.impl.LPInterpreter.run(LPInterpreter.java:330)
at com.hp.hpl.jena.reasoner.rulesys.impl.LPInterpreter.next(LPInterpreter.java:192)
at com.hp.hpl.jena.reasoner.rulesys.impl.LPTopGoalIterator.moveForward(LPTopGoalIterator.java:100)
at com.hp.hpl.jena.reasoner.rulesys.impl.LPTopGoalIterator.hasNext(LPTopGoalIterator.java:222)
at com.hp.hpl.jena.util.iterator.WrappedIterator.hasNext(WrappedIterator.java:90)
at com.hp.hpl.jena.util.iterator.WrappedIterator.hasNext(WrappedIterator.java:90)
at com.hp.hpl.jena.util.iterator.FilterIterator.hasNext(FilterIterator.java:54)
at com.hp.hpl.jena.util.iterator.WrappedIterator.hasNext(WrappedIterator.java:90)
at com.hp.hpl.jena.util.iterator.FilterIterator.hasNext(FilterIterator.java:54)
at com.hp.hpl.jena.sparql.engine.iterator.QueryIterTriplePattern$TripleMapper.hasNextBinding(QueryIterTriplePattern.java:151)
at com.hp.hpl.jena.sparql.engine.iterator.QueryIteratorBase.hasNext(QueryIteratorBase.java:112)
at com.hp.hpl.jena.sparql.engine.iterator.QueryIterRepeatApply.hasNextBinding(QueryIterRepeatApply.java:76)
at com.hp.hpl.jena.sparql.engine.iterator.QueryIteratorBase.hasNext(QueryIteratorBase.java:112)
at com.hp.hpl.jena.sparql.engine.iterator.QueryIterBlockTriples.hasNextBinding(QueryIterBlockTriples.java:64)
at com.hp.hpl.jena.sparql.engine.iterator.QueryIteratorBase.hasNext(QueryIteratorBase.java:112)
at com.hp.hpl.jena.sparql.engine.iterator.QueryIterTopN$1.initializeIterator(QueryIterTopN.java:97)
at org.apache.jena.atlas.iterator.IteratorDelayedInitialization.init(IteratorDelayedInitialization.java:40)
at org.apache.jena.atlas.iterator.IteratorDelayedInitialization.hasNext(IteratorDelayedInitialization.java:50)
at com.hp.hpl.jena.sparql.engine.iterator.QueryIterPlainWrapper.hasNextBinding(QueryIterPlainWrapper.java:54)
at com.hp.hpl.jena.sparql.engine.iterator.QueryIteratorBase.hasNext(QueryIteratorBase.java:112)
at com.hp.hpl.jena.sparql.engine.iterator.QueryIterConvert.hasNextBinding(QueryIterConvert.java:59)
at com.hp.hpl.jena.sparql.engine.iterator.QueryIteratorBase.hasNext(QueryIteratorBase.java:112)
at com.hp.hpl.jena.sparql.engine.iterator.QueryIterRepeatApply.hasNextBinding(QueryIterRepeatApply.java:76)
at com.hp.hpl.jena.sparql.engine.iterator.QueryIteratorBase.hasNext(QueryIteratorBase.java:112)
at com.hp.hpl.jena.sparql.engine.iterator.QueryIterRepeatApply.makeNextStage(QueryIterRepeatApply.java:103)
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:112)
at com.hp.hpl.jena.sparql.engine.iterator.QueryIterConvert.hasNextBinding(QueryIterConvert.java:59)
at com.hp.hpl.jena.sparql.engine.iterator.QueryIteratorBase.hasNext(QueryIteratorBase.java:112)
at com.hp.hpl.jena.sparql.engine.iterator.QueryIteratorWrapper.hasNextBinding(QueryIteratorWrapper.java:40)
at com.hp.hpl.jena.sparql.engine.iterator.QueryIteratorBase.hasNext(QueryIteratorBase.java:112)
at com.hp.hpl.jena.sparql.engine.iterator.QueryIteratorWrapper.hasNextBinding(QueryIteratorWrapper.java:40)
at com.hp.hpl.jena.sparql.engine.iterator.QueryIteratorBase.hasNext(QueryIteratorBase.java:112)
at com.hp.hpl.jena.sparql.engine.ResultSetStream.hasNext(ResultSetStream.java:75)
at com.hp.hpl.jena.sparql.resultset.ResultSetApply.apply(ResultSetApply.java:41)
at com.hp.hpl.jena.sparql.resultset.XMLOutput.format(XMLOutput.java:52)
at com.hp.hpl.jena.query.ResultSetFormatter.outputAsXML(ResultSetFormatter.java:482)
at org.apache.jena.fuseki.servlets.ResponseResultSet$1.output(ResponseResultSet.java:191)
at org.apache.jena.fuseki.servlets.ResponseResultSet.output(ResponseResultSet.java:283)
at org.apache.jena.fuseki.servlets.ResponseResultSet.sparqlXMLOutput(ResponseResultSet.java:195)
at org.apache.jena.fuseki.servlets.ResponseResultSet.doResponseResultSet$(ResponseResultSet.java:141)
at org.apache.jena.fuseki.servlets.ResponseResultSet.doResponseResultSet(ResponseResultSet.java:88)
at org.apache.jena.fuseki.servlets.SPARQL_Query.sendResults(SPARQL_Query.java:348)
at org.apache.jena.fuseki.servlets.SPARQL_Query.execute(SPARQL_Query.java:244)
at org.apache.jena.fuseki.servlets.SPARQL_Query.executeWithParameter(SPARQL_Query.java:195)
at org.apache.jena.fuseki.servlets.SPARQL_Query.perform(SPARQL_Query.java:80)
at org.apache.jena.fuseki.servlets.SPARQL_ServletBase.executeLifecycle(SPARQL_ServletBase.java:171)
at org.apache.jena.fuseki.servlets.SPARQL_ServletBase.executeAction(SPARQL_ServletBase.java:152)
at org.apache.jena.fuseki.servlets.SPARQL_ServletBase.execCommonWorker(SPARQL_ServletBase.java:140)
at org.apache.jena.fuseki.servlets.SPARQL_ServletBase.doCommon(SPARQL_ServletBase.java:69)
at org.apache.jena.fuseki.servlets.SPARQL_Query.doGet(SPARQL_Query.java:61)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:735)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:848)
at org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:684)
at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1448)
at org.eclipse.jetty.servlets.UserAgentFilter.doFilter(UserAgentFilter.java:82)
at org.eclipse.jetty.servlets.GzipFilter.doFilter(GzipFilter.java:294)
at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1419)
at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:455)
at org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:229)
at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1075)
at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:384)
at org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:193)
at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1009)
at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:135)
at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:116)
at org.eclipse.jetty.server.Server.handle(Server.java:370)
at org.eclipse.jetty.server.AbstractHttpConnection.handleRequest(AbstractHttpConnection.java:489)
at org.eclipse.jetty.server.BlockingHttpConnection.handleRequest(BlockingHttpConnection.java:53)
at org.eclipse.jetty.server.AbstractHttpConnection.headerComplete(AbstractHttpConnection.java:949)
at org.eclipse.jetty.server.AbstractHttpConnection$RequestHandler.headerComplete(AbstractHttpConnection.java:1011)
at org.eclipse.jetty.http.HttpParser.parseNext(HttpParser.java:644)
at org.eclipse.jetty.http.HttpParser.parseAvailable(HttpParser.java:235)
at org.eclipse.jetty.server.BlockingHttpConnection.handle(BlockingHttpConnection.java:72)
at org.eclipse.jetty.server.nio.BlockingChannelConnector$BlockingChannelEndPoint.run(BlockingChannelConnector.java:298)
at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:608)
at org.eclipse.jetty.util.thread.QueuedThreadPool$3.run(QueuedThreadPool.java:543)
at java.lang.Thread.run(Thread.java:745)
14:46:20 INFO [4918] Content-Type application/sparql-r?O?O