[jira] [Created] (SOLR-6029) CollapsingQParserPlugin throws ArrayIndexOutOfBoundsException if elevated doc has been deleted from a segment

["Greg Harris (JIRA)" <ji...@apache.org>]

Greg Harris created SOLR-6029:
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             Summary: CollapsingQParserPlugin throws ArrayIndexOutOfBoundsException if elevated doc has been deleted from a segment
                 Key: SOLR-6029
                 URL: https://issues.apache.org/jira/browse/SOLR-6029
             Project: Solr
          Issue Type: Bug
          Components: query parsers
    Affects Versions: 4.7.1
            Reporter: Greg Harris
            Priority: Minor
         Attachments: SOLR-6029.patch

CollapsingQParserPlugin misidentifies if a document is not found in a segment if the docid previously existed in a segment ie.... was deleted. 

Relevant code bit from CollapsingQParserPlugin needs to be changed from:
-if(doc != -1) {
+if((doc != -1) && (doc != DocsEnum.NO_MORE_DOCS)) {

What happens is if the doc is not found the returned value is DocsEnum.NO_MORE_DOCS. This would then get set in the fq bitSet array as the doc location causing an ArrayIndexOutOfBoundsException as the array is only as big as maxDocs. 




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