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From "Adrien Grand (Created) (JIRA)" <j...@apache.org>
Subject [jira] [Created] (SOLR-2923) IllegalArgumentException when using useFilterForSortedQuery on an empty index
Date Mon, 28 Nov 2011 13:38:40 GMT
IllegalArgumentException when using useFilterForSortedQuery on an empty index
-----------------------------------------------------------------------------

                 Key: SOLR-2923
                 URL: https://issues.apache.org/jira/browse/SOLR-2923
             Project: Solr
          Issue Type: Bug
          Components: search
    Affects Versions: 3.6, 4.0
            Reporter: Adrien Grand
            Priority: Trivial


An IllegalArgumentException can occur under the following circumstances:
 - the index is empty,
 - {{useFilterForSortedQuery}} is enabled,
 - {{queryResultsCache}} is disabled.

Here are what the exception and its stack trace look like (Solr trunk):

{quote}
numHits must be > 0; please use TotalHitCountCollector if you just need the total hit count

java.lang.IllegalArgumentException: numHits must be > 0; please use TotalHitCountCollector
if you just need the total hit count
	at org.apache.lucene.search.TopFieldCollector.create(TopFieldCollector.java:917)
	at org.apache.solr.search.SolrIndexSearcher.sortDocSet(SolrIndexSearcher.java:1741)
	at org.apache.solr.search.SolrIndexSearcher.getDocListC(SolrIndexSearcher.java:1211)
	at org.apache.solr.search.SolrIndexSearcher.search(SolrIndexSearcher.java:353)
	...
{quote}

To reproduce this error from a fresh copy of Solr trunk, edit {{example/solr/conf/solrconfig.xml}}
to disable {{queryResultCache}} and enable {{useFilterForSortedQuery}}. Then run {{ant run-example}}
and issue a query which sorts against any field ({{http://localhost:8983/solr/select?q=*:*&sort=manu+desc}}
for example).



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