I get the same error when I try to sort the result by geo_distance.
I am using Solr 1.4 (Nov 2009 release), lucene 2.9.1 and localsolr 2.0.
Thank you very much for your support.
Here is the stacktrace...
SEVERE: java.lang.NullPointerException
at org.apache.lucene.search.SortField.getComparator(SortField.java:496)
at
org.apache.lucene.search.FieldValueHitQueue$OneComparatorFieldValueHitQueue.<init>(FieldValueHitQueue.java:79)
at
org.apache.lucene.search.FieldValueHitQueue.create(FieldValueHitQueue.java:192)
at
org.apache.lucene.search.TopFieldCollector.create(TopFieldCollector.java:886)
at
org.apache.solr.search.SolrIndexSearcher.getDocListNC(SolrIndexSearcher.java:981)
at
org.apache.solr.search.SolrIndexSearcher.getDocListC(SolrIndexSearcher.java:884)
at
org.apache.solr.search.SolrIndexSearcher.search(SolrIndexSearcher.java:341)
at
org.apache.solr.search.SolrIndexSearcher.getDocList(SolrIndexSearcher.java:1161)
at
com.pjaol.search.solr.component.LocalSolrQueryComponent.process(LocalSolrQueryComponent.java:286)
at
org.apache.solr.handler.component.SearchHandler.handleRequestBody(SearchHandler.java:195)
at
org.apache.solr.handler.RequestHandlerBase.handleRequest(RequestHandlerBase.java:131)
at org.apache.solr.core.SolrCore.execute(SolrCore.java:1316)
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