The http parameter "stream" was recently changed to "expr" in SOLR-8443.
Joel Bernstein http://joelsolr.blogspot.com/ On Tue, Dec 22, 2015 at 8:45 PM, Jason Gerlowski <gerlowsk...@gmail.com> wrote: > I'll preface this email by saying that I wasn't sure which mailing list it > belonged on. It might fit on the dev list (since it involves a potential > Solr bug), but maybe the solr-users list is a better choice (since I'm > probably just misusing Solr). I settled on the solr-users list. Sorry if > I chose incorrectly. > > Moving on... > > I've run into a NullPointerException when trying to use the /stream > handler. I'm not sure whether I'm doing something wrong with the commands > I'm sending to Solr via curl, or if there's an underlying bug causing this > behavior. > > I'm making the stream request: > > curl --data-urlencode 'stream=search(gettingstarted, q="*:*", > fl="title,url", sort="_version_ asc", rows="10")' > "localhost:8983/solr/gettingstarted/stream" > > Solr responds with: > > {"result-set":{"docs":[ > {"EXCEPTION":null,"EOF":true}]}} > > At this point, I assumed that something was wrong with my command, so I > checked the solr-logs for a hint at the problem. I found: > > ERROR - 2015-12-23 01:32:32.535; [c:gettingstarted s:shard2 r:core_node2 > x:gettingstarted_shard2_replica2] org.apache.solr.common.SolrException; > java.lang.NullPointerException > at > > org.apache.solr.client.solrj.io.stream.expr.StreamExpressionParser.generateStreamExpression(StreamExpressionParser.java:47) > at > > org.apache.solr.client.solrj.io.stream.expr.StreamExpressionParser.parse(StreamExpressionParser.java:38) > at > > org.apache.solr.client.solrj.io.stream.expr.StreamFactory.constructStream(StreamFactory.java:168) > at > > org.apache.solr.handler.StreamHandler.handleRequestBody(StreamHandler.java:155) > at > > org.apache.solr.handler.RequestHandlerBase.handleRequest(RequestHandlerBase.java:156) > > Has anyone seen this behavior before? Is Solr reacting to something amiss > in my request, or is there maybe a bug here? I'll admit this is my first > attempt at using the /stream API, so I might be getting something wrong > here. I consulted the reference guide's examples on using the streaming > API ( > https://cwiki.apache.org/confluence/display/solr/Streaming+Expressions) > when coming up with my curl command, but I might've missed something. > > Anyways, I'd appreciate any insight that anyone can offer on this. If it > helps, I've included reproduction steps below. > > 1.) Download and compile Solr trunk. > 2.) Start Solr using one of the examples (bin/solr start -e cloud). Accept > default values. > 3.) Index some docs (bin/post -c gettingstarted > http://lucene.apache.org/solr -recursive 1 -delay 1) > 4.) Do a search to sanity check the ingestion (curl > "localhost:8983/solr/gettingstarted/select?q=*:*&wt=json") > 5.) Make a /stream request for some docs (curl --data-urlencode > 'stream=search(gettingstarted, q="*:*", fl="title,url", sort="_version_ > asc", rows="10")' "localhost:8983/solr/gettingstarted/stream") > > Thanks again for any ideas/help anyone can give. > > Best, > > Jason >
