I have been trying the MLT Query using EmbeddedSolr and SolrJ clients, which
is resulting in NPE.
It looks like a problem as mentioned here
https://issues.apache.org/jira/browse/LUCENE-819
If that is the case,how to fix this?
The MLT field has been stored with termvectors.
The query i used and the exception is below.
In debug mode Lucene term.hascode() has been receiving some fields in the
index and breaking with the id field,
I was hoping to see the exception happening bcos of the mlt
fields/fieldValues. But it didn't.
Can somebody help me please, i have already spent a whole saturday night
with the trunk code ;-(
SolrQuery q = new SolrQuery();
q.setQuery( id:11);
q.addFacetField(l);
q.setFacet(true);
q.setFacetMinCount(1);
q.setParam(mlt, true);
q.setParam(mlt.fl,field1);
q.setParam(mlt.minwl,1);
q.setParam(mlt.mintf,1);
q.setParam(mlt.mindf,1);
QueryResponse response = server.query( q );
SEVERE: java.lang.NullPointerException
at org.apache.lucene.index.Term.hashCode(Term.java:78)
at org.apache.lucene.search.TermQuery.hashCode (TermQuery.java:175)
at org.apache.lucene.search.BooleanClause.hashCode(BooleanClause.java
:108)
at java.util.AbstractList.hashCode(AbstractList.java:630)
at org.apache.lucene.search.BooleanQuery.hashCode (BooleanQuery.java
:445)
at org.apache.solr.search.QueryResultKey.init(QueryResultKey.java:47)
at org.apache.solr.search.SolrIndexSearcher.getDocListC(
SolrIndexSearcher.java:725)
at org.apache.solr.search.SolrIndexSearcher.getDocListAndSet (
SolrIndexSearcher.java:1241)
at
org.apache.solr.handler.MoreLikeThisHandler$MoreLikeThisHelper.getMoreLikeThis
(MoreLikeThisHandler.java:280)
at
org.apache.solr.handler.MoreLikeThisHandler$MoreLikeThisHelper.getMoreLikeThese(
MoreLikeThisHandler.java:310)
at org.apache.solr.handler.StandardRequestHandler.handleRequestBody(
StandardRequestHandler.java:142)
at org.apache.solr.handler.RequestHandlerBase.handleRequest(
RequestHandlerBase.java :78)
at org.apache.solr.core.SolrCore.execute(SolrCore.java:894)
at org.apache.solr.client.solrj.embedded.EmbeddedSolrServer.request(
EmbeddedSolrServer.java:106)
at org.apache.solr.client.solrj.request.QueryRequest.process (
QueryRequest.java:80)
at org.apache.solr.client.solrj.impl.BaseSolrServer.query(
BaseSolrServer.java:99)
at my.padam.solr.SolrJQueryTest.testQuery(SolrJQueryTest.java:134)
at my.padam.solr.SolrJQueryTest.main (SolrJQueryTest.java:165)
--
Thanks
George L
