You're getting json parse errors, that look like your getting an XML response. Do you see any errors in the logs other then the stack trace. I suspect there might be another error above the stack trace which shows the error from the server that causing it to respond with XML.
Joel Bernstein http://joelsolr.blogspot.com/ On Mon, Mar 13, 2017 at 11:01 PM, Zheng Lin Edwin Yeo <edwinye...@gmail.com> wrote: > Hi Joel, > > >One thing it could be is that gatherNodes will only work on single value > >fields currently. > > Regarding this, the fields which I am using in the query is already a > single value field, not multi-value field. > > Regards, > Edwin > > > On 14 March 2017 at 10:04, Zheng Lin Edwin Yeo <edwinye...@gmail.com> > wrote: > > > Hi Joel, > > > > This is the details which I get form the logs. > > > > java.lang.RuntimeException: java.util.concurrent.ExecutionException: > > java.lang.RuntimeException: java.io.IOException: java.util.concurrent. > ExecutionException: > > java.io.IOException: --> http://localhost:8984/solr/email/: An exception > > has occurred on the server, refer to server log for details. > > at org.apache.solr.client.solrj.io.graph.GatherNodesStream. > > read(GatherNodesStream.java:600) > > at org.apache.solr.client.solrj.io.stream.ExceptionStream. > > read(ExceptionStream.java:68) > > at org.apache.solr.handler.StreamHandler$TimerStream. > > read(StreamHandler.java:479) > > at org.apache.solr.client.solrj.io.stream.TupleStream.lambda$ > > writeMap$0(TupleStream.java:67) > > at org.apache.solr.response.JSONWriter.writeIterator( > > JSONResponseWriter.java:523) > > at org.apache.solr.response.TextResponseWriter.writeVal( > > TextResponseWriter.java:175) > > at org.apache.solr.response.JSONWriter$2.put( > JSONResponseWriter.java:559) > > at org.apache.solr.client.solrj.io.stream.TupleStream. > > writeMap(TupleStream.java:64) > > at org.apache.solr.response.JSONWriter.writeMap( > > JSONResponseWriter.java:547) > > at org.apache.solr.response.TextResponseWriter.writeVal( > > TextResponseWriter.java:193) > > at org.apache.solr.response.JSONWriter.writeNamedListAsMapWithDups( > > JSONResponseWriter.java:209) > > at org.apache.solr.response.JSONWriter.writeNamedList( > > JSONResponseWriter.java:325) > > at org.apache.solr.response.JSONWriter.writeResponse( > > JSONResponseWriter.java:120) > > at org.apache.solr.response.JSONResponseWriter.write( > > JSONResponseWriter.java:71) > > at org.apache.solr.response.QueryResponseWriterUtil.writeQueryResponse( > > QueryResponseWriterUtil.java:65) > > at org.apache.solr.servlet.HttpSolrCall.writeResponse( > > HttpSolrCall.java:732) > > at org.apache.solr.servlet.HttpSolrCall.call(HttpSolrCall.java:473) > > at org.apache.solr.servlet.SolrDispatchFilter.doFilter( > > SolrDispatchFilter.java:345) > > at org.apache.solr.servlet.SolrDispatchFilter.doFilter( > > SolrDispatchFilter.java:296) > > at org.eclipse.jetty.servlet.ServletHandler$CachedChain. > > doFilter(ServletHandler.java:1691) > > at org.eclipse.jetty.servlet.ServletHandler.doHandle( > > ServletHandler.java:582) > > 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:1180) > > at org.eclipse.jetty.servlet.ServletHandler.doScope( > > ServletHandler.java:512) > > at org.eclipse.jetty.server.session.SessionHandler. > > doScope(SessionHandler.java:185) > > at org.eclipse.jetty.server.handler.ContextHandler. > > doScope(ContextHandler.java:1112) > > at org.eclipse.jetty.server.handler.ScopedHandler.handle( > > ScopedHandler.java:141) > > at org.eclipse.jetty.server.handler.ContextHandlerCollection.handle( > > ContextHandlerCollection.java:213) > > at org.eclipse.jetty.server.handler.HandlerCollection. > > handle(HandlerCollection.java:119) > > at org.eclipse.jetty.server.handler.HandlerWrapper.handle( > > HandlerWrapper.java:134) > > at org.eclipse.jetty.server.Server.handle(Server.java:534) > > at org.eclipse.jetty.server.HttpChannel.handle(HttpChannel.java:320) > > at org.eclipse.jetty.server.HttpConnection.onFillable( > > HttpConnection.java:251) > > at org.eclipse.jetty.io.AbstractConnection$ReadCallback.succeeded( > > AbstractConnection.java:273) > > at org.eclipse.jetty.io.FillInterest.fillable(FillInterest.java:95) > > at org.eclipse.jetty.io.SelectChannelEndPoint$2.run( > > SelectChannelEndPoint.java:93) > > at org.eclipse.jetty.util.thread.strategy.ExecuteProduceConsume. > > executeProduceConsume(ExecuteProduceConsume.java:303) > > at org.eclipse.jetty.util.thread.strategy.ExecuteProduceConsume. > > produceConsume(ExecuteProduceConsume.java:148) > > at org.eclipse.jetty.util.thread.strategy.ExecuteProduceConsume.run( > > ExecuteProduceConsume.java:136) > > at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob( > > QueuedThreadPool.java:671) > > at org.eclipse.jetty.util.thread.QueuedThreadPool$2.run( > > QueuedThreadPool.java:589) > > at java.lang.Thread.run(Thread.java:745) > > Caused by: java.util.concurrent.ExecutionException: > > java.lang.RuntimeException: java.io.IOException: java.util.concurrent. > ExecutionException: > > java.io.IOException: --> http://localhost:8984/solr/email/: An exception > > has occurred on the server, refer to server log for details. > > at java.util.concurrent.FutureTask.report(FutureTask.java:122) > > at java.util.concurrent.FutureTask.get(FutureTask.java:192) > > at org.apache.solr.client.solrj.io.graph.GatherNodesStream. > > read(GatherNodesStream.java:572) > > ... 43 more > > Caused by: java.lang.RuntimeException: java.io.IOException: > > java.util.concurrent.ExecutionException: java.io.IOException: --> > > http://localhost.:8984/solr/email/: An exception has occurred on the > > server, refer to server log for details. > > at org.apache.solr.client.solrj.io.graph.GatherNodesStream$ > > JoinRunner.call(GatherNodesStream.java:487) > > at org.apache.solr.client.solrj.io.graph.GatherNodesStream$ > > JoinRunner.call(GatherNodesStream.java:406) > > at java.util.concurrent.FutureTask.run(FutureTask.java:266) > > at org.apache.solr.common.util.ExecutorUtil$MDCAwareThreadPoolExecutor. > > lambda$execute$0(ExecutorUtil.java:229) > > at java.util.concurrent.ThreadPoolExecutor.runWorker( > > ThreadPoolExecutor.java:1142) > > at java.util.concurrent.ThreadPoolExecutor$Worker.run( > > ThreadPoolExecutor.java:617) > > ... 1 more > > Caused by: java.io.IOException: java.util.concurrent.ExecutionException: > > java.io.IOException: --> http://localhost:8984/solr/email/: An exception > > has occurred on the server, refer to server log for details. > > at org.apache.solr.client.solrj.io.stream.CloudSolrStream. > > openStreams(CloudSolrStream.java:451) > > at org.apache.solr.client.solrj.io.stream.CloudSolrStream. > > open(CloudSolrStream.java:308) > > at org.apache.solr.client.solrj.io.stream.PushBackStream.open( > > PushBackStream.java:70) > > at org.apache.solr.client.solrj.io.stream.ReducerStream.open( > > ReducerStream.java:199) > > at org.apache.solr.client.solrj.io.stream.UniqueStream.open( > > UniqueStream.java:150) > > at org.apache.solr.client.solrj.io.graph.GatherNodesStream$ > > JoinRunner.call(GatherNodesStream.java:476) > > ... 6 more > > Caused by: java.util.concurrent.ExecutionException: java.io.IOException: > > --> http://localhost:8984/solr/email/: An exception has occurred on the > > server, refer to server log for details. > > at java.util.concurrent.FutureTask.report(FutureTask.java:122) > > at java.util.concurrent.FutureTask.get(FutureTask.java:192) > > at org.apache.solr.client.solrj.io.stream.CloudSolrStream. > > openStreams(CloudSolrStream.java:445) > > ... 11 more > > Caused by: java.io.IOException: --> http://localhost:8984/solr/email/: > An > > exception has occurred on the server, refer to server log for details. > > at org.apache.solr.client.solrj.io.stream.SolrStream.read( > > SolrStream.java:238) > > at org.apache.solr.client.solrj.io.stream.CloudSolrStream$ > > TupleWrapper.next(CloudSolrStream.java:541) > > at org.apache.solr.client.solrj.io.stream.CloudSolrStream$ > > StreamOpener.call(CloudSolrStream.java:564) > > at org.apache.solr.client.solrj.io.stream.CloudSolrStream$ > > StreamOpener.call(CloudSolrStream.java:551) > > ... 5 more > > Caused by: org.noggit.JSONParser$ParseException: JSON Parse Error: > > char=<,position=0 BEFORE='<' AFTER='?xml version="1.0" > encoding="UTF-8"?> <' > > at org.noggit.JSONParser.err(JSONParser.java:356) > > at org.noggit.JSONParser.handleNonDoubleQuoteString(JSONParser.java:712) > > at org.noggit.JSONParser.next(JSONParser.java:886) > > at org.noggit.JSONParser.nextEvent(JSONParser.java:930) > > at org.apache.solr.client.solrj.io.stream.JSONTupleStream. > > expect(JSONTupleStream.java:97) > > at org.apache.solr.client.solrj.io.stream.JSONTupleStream. > > advanceToDocs(JSONTupleStream.java:179) > > at org.apache.solr.client.solrj.io.stream.JSONTupleStream. > > next(JSONTupleStream.java:77) > > at org.apache.solr.client.solrj.io.stream.SolrStream.read( > > SolrStream.java:207) > > ... 8 more > > > > > > Regards, > > Edwin > > > > > > On 14 March 2017 at 00:26, Joel Bernstein <joels...@gmail.com> wrote: > > > >> Syntax looks ok. The logs should have a stack trace. > >> > >> One thing it could be is that gatherNodes will only work on single value > >> fields currently. > >> > >> Joel Bernstein > >> http://joelsolr.blogspot.com/ > >> > >> On Mon, Mar 13, 2017 at 1:59 AM, Zheng Lin Edwin Yeo < > >> edwinye...@gmail.com> > >> wrote: > >> > >> > Hi, > >> > > >> > I am getting this error when I tried to run a query for Graph > Traversal > >> > using Streaming Expressions: > >> > > >> > { > >> > "result-set":{ > >> > "docs":[{ > >> > "EXCEPTION":"java.util.concurrent.ExecutionException: > >> > java.lang.RuntimeException: java.io.IOException: > >> > java.util.concurrent.ExecutionException: java.io.IOException: --> > >> > http://localhost:8983/solr/email/: An exception has occurred on the > >> > server, > >> > refer to server log for details.", > >> > "EOF":true, > >> > "RESPONSE_TIME":11}]}} > >> > > >> > > >> > Below is my query: > >> > > >> > http://locahost:8983/solr/email/stream?expr=gatherNodes(email, > >> > walk="ed...@mail.com->from", > >> > gather="to")&indent=true > >> > > >> > What could be the reason? > >> > > >> > I'm using Solr 6.4.1 at the moment. > >> > > >> > Regards, > >> > Edwin > >> > > >> > > > > >
