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https://issues.apache.org/jira/browse/SOLR-2923?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Adrien Grand updated SOLR-2923:
-------------------------------
Attachment: SOLR-2923.patch
This patch fixes the issue.
> 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
> Attachments: SOLR-2923.patch
>
>
> 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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