[jira] [Created] (SOLR-8397) QueryScorer highlighting with join query causes classcast exception

["Peter Ciuffetti (JIRA)" <ji...@apache.org>]

Peter Ciuffetti created SOLR-8397:
-------------------------------------

             Summary: QueryScorer highlighting with join query causes classcast exception
                 Key: SOLR-8397
                 URL: https://issues.apache.org/jira/browse/SOLR-8397
             Project: Solr
          Issue Type: Bug
          Components: highlighter
    Affects Versions: 5.3
         Environment: SolrCloud 5.3.1
            Reporter: Peter Ciuffetti


If you use the combination of a join query with the 'old' QueryScorer as a highlighter, you get a classcast exception

{code}
java.lang.ClassCastException: org.apache.lucene.search.IndexSearcher cannot be cast to org.apache.solr.search.SolrIndexSearcher
	at org.apache.solr.search.JoinQuery.createWeight(JoinQParserPlugin.java:217)
	at org.apache.lucene.search.IndexSearcher.createWeight(IndexSearcher.java:855)
	at org.apache.lucene.search.IndexSearcher.createNormalizedWeight(IndexSearcher.java:838)
	at org.apache.lucene.search.highlight.QueryTermExtractor.getTerms(QueryTermExtractor.java:131)
	at org.apache.lucene.search.highlight.QueryTermExtractor.getTerms(QueryTermExtractor.java:106)
	at org.apache.lucene.search.highlight.QueryTermExtractor.getTerms(QueryTermExtractor.java:119)
	at org.apache.lucene.search.highlight.QueryTermExtractor.getTerms(QueryTermExtractor.java:62)
	at org.apache.lucene.search.highlight.QueryTermScorer.<init>(QueryTermScorer.java:52)
	at org.apache.solr.highlight.DefaultSolrHighlighter.getQueryScorer(DefaultSolrHighlighter.java:244)
	at org.apache.solr.highlight.DefaultSolrHighlighter.getHighlighter(DefaultSolrHighlighter.java:197)
	at org.apache.solr.highlight.DefaultSolrHighlighter.doHighlightingByHighlighter(DefaultSolrHighlighter.java:586)
	at org.apache.solr.highlight.DefaultSolrHighlighter.doHighlighting(DefaultSolrHighlighter.java:428)
	at org.apache.solr.handler.component.HighlightComponent.process(HighlightComponent.java:143)
	at org.apache.solr.handler.component.SearchHandler.handleRequestBody(SearchHandler.java:277)
	at org.apache.solr.handler.RequestHandlerBase.handleRequest(RequestHandlerBase.java:143)
{code}

the query parameters that will produce this are

{code}
?hl=true
&hl.usePhraseHighlighter=false
&hl.fl=somefield
&q={!join from=x to=y}somequery
{code}

This does not happen when the default SpanScorer is used (which happens when hl.usePhraseHighlighter=true or is unspecified)



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