Hi all, I switched from GET request to POST requests for SPARQL queries, and then I make a few thousand queries and Fuseki starts failing with the exception below.
Seems this was discussed in 2011: https://issues.apache.org/jira/browse/JENA-181 I've tried tweaking -XX:MaxDirectMemorySize - but it doesn't look like it makes much difference. GET requests with the query encoded in a get parameter has no problem. Does anyone have any newer insights? [2017-05-15 12:15:46] Fuseki WARN [3353] RC = 500 : Direct buffer memory java.lang.OutOfMemoryError: Direct buffer memory at java.nio.Bits.reserveMemory(Bits.java:658) at java.nio.DirectByteBuffer.<init>(DirectByteBuffer.java:123) at java.nio.ByteBuffer.allocateDirect(ByteBuffer.java:311) at org.eclipse.jetty.util.BufferUtil.allocateDirect(BufferUtil.java:128) at org.eclipse.jetty.io.ArrayByteBufferPool.acquire(ArrayByteBufferPool.java:69) at org.eclipse.jetty.server.HttpOutput.write(HttpOutput.java:396) at sun.nio.cs.StreamEncoder.writeBytes(StreamEncoder.java:221) at sun.nio.cs.StreamEncoder.implFlushBuffer(StreamEncoder.java:291) at sun.nio.cs.StreamEncoder.implFlush(StreamEncoder.java:295) at sun.nio.cs.StreamEncoder.flush(StreamEncoder.java:141) at java.io.OutputStreamWriter.flush(OutputStreamWriter.java:229) at org.apache.jena.atlas.io.IO.flush(IO.java:250) at org.apache.jena.atlas.io.BufferingWriter.flush(BufferingWriter.java:153) at org.apache.jena.atlas.io.IO.flush(IO.java:250) at org.apache.jena.atlas.io.IndentedWriter.flush(IndentedWriter.java:218) at org.apache.jena.sparql.resultset.XMLOutputResultSet.finish(XMLOutputResultSet.java:127) at org.apache.jena.sparql.resultset.ResultSetApply.apply(ResultSetApply.java:48) at org.apache.jena.sparql.resultset.XMLOutput.format(XMLOutput.java:52) at org.apache.jena.query.ResultSetFormatter.outputAsXML(ResultSetFormatter.java:367) at org.apache.jena.fuseki.servlets.ResponseResultSet$1.output(ResponseResultSet.java:197) at org.apache.jena.fuseki.servlets.ResponseResultSet.output(ResponseResultSet.java:303) at org.apache.jena.fuseki.servlets.ResponseResultSet.sparqlXMLOutput(ResponseResultSet.java:201) at org.apache.jena.fuseki.servlets.ResponseResultSet.doResponseResultSet$(ResponseResultSet.java:147) at org.apache.jena.fuseki.servlets.ResponseResultSet.doResponseResultSet(ResponseResultSet.java:93) at org.apache.jena.fuseki.servlets.SPARQL_Query.sendResults(SPARQL_Query.java:393) at org.apache.jena.fuseki.servlets.SPARQL_Query.execute(SPARQL_Query.java:272) at org.apache.jena.fuseki.servlets.SPARQL_Query.executeWithParameter(SPARQL_Query.java:228) at org.apache.jena.fuseki.servlets.SPARQL_Query.perform(SPARQL_Query.java:213) at org.apache.jena.fuseki.servlets.ActionSPARQL.executeLifecycle(ActionSPARQL.java:131) at org.apache.jena.fuseki.servlets.SPARQL_UberServlet.executeRequest(SPARQL_UberServlet.java:356) at org.apache.jena.fuseki.servlets.SPARQL_UberServlet.serviceDispatch(SPARQL_UberServlet.java:317) at org.apache.jena.fuseki.servlets.SPARQL_UberServlet.executeAction(SPARQL_UberServlet.java:271) at org.apache.jena.fuseki.servlets.ActionSPARQL.execCommonWorker(ActionSPARQL.java:82) at org.apache.jena.fuseki.servlets.ActionBase.doCommon(ActionBase.java:81) at org.apache.jena.fuseki.servlets.FusekiFilter.doFilter(FusekiFilter.java:73) at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1669) at org.apache.shiro.web.servlet.ProxiedFilterChain.doFilter(ProxiedFilterChain.java:61) at org.apache.shiro.web.servlet.AdviceFilter.executeChain(AdviceFilter.java:108) at org.apache.shiro.web.servlet.AdviceFilter.doFilterInternal(AdviceFilter.java:137) at org.apache.shiro.web.servlet.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:125) at org.apache.shiro.web.servlet.ProxiedFilterChain.doFilter(ProxiedFilterChain.java:66) at org.apache.shiro.web.servlet.AbstractShiroFilter.executeChain(AbstractShiroFilter.java:449) at org.apache.shiro.web.servlet.AbstractShiroFilter$1.call(AbstractShiroFilter.java:365) at org.apache.shiro.subject.support.SubjectCallable.doCall(SubjectCallable.java:90) at org.apache.shiro.subject.support.SubjectCallable.call(SubjectCallable.java:83) at org.apache.shiro.subject.support.DelegatingSubject.execute(DelegatingSubject.java:383) at org.apache.shiro.web.servlet.AbstractShiroFilter.doFilterInternal(AbstractShiroFilter.java:362) at org.apache.shiro.web.servlet.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:125) at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1669) at org.apache.jena.fuseki.servlets.CrossOriginFilter.handle(CrossOriginFilter.java:285) at org.apache.jena.fuseki.servlets.CrossOriginFilter.doFilter(CrossOriginFilter.java:248) at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1669) at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:581) at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:143) at org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:548) at org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:226) at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1156) at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:511) at org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:185) at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1088) at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:141) at org.eclipse.jetty.server.handler.gzip.GzipHandler.handle(GzipHandler.java:374) at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:119) at org.eclipse.jetty.server.Server.handle(Server.java:517) at org.eclipse.jetty.server.HttpChannel.handle(HttpChannel.java:306) at org.eclipse.jetty.server.HttpConnection.onFillable(HttpConnection.java:242) at org.eclipse.jetty.io.AbstractConnection$ReadCallback.succeeded(AbstractConnection.java:245) at org.eclipse.jetty.io.FillInterest.fillable(FillInterest.java:95) at org.eclipse.jetty.io.SelectChannelEndPoint$2.run(SelectChannelEndPoint.java:75) at org.eclipse.jetty.util.thread.strategy.ExecuteProduceConsume.produceAndRun(ExecuteProduceConsume.java:213) at org.eclipse.jetty.util.thread.strategy.ExecuteProduceConsume.run(ExecuteProduceConsume.java:147) at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:654) at org.eclipse.jetty.util.thread.QueuedThreadPool$3.run(QueuedThreadPool.java:572) at java.lang.Thread.run(Thread.java:745) -- http://gromgull.net
