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 >
