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 >> > >> > >
