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From "Adrien Grand (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (SOLR-2923) IllegalArgumentException when using useFilterForSortedQuery on an empty index
Date Fri, 25 May 2012 16:01:23 GMT

    [ https://issues.apache.org/jira/browse/SOLR-2923?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13283559#comment-13283559
] 

Adrien Grand commented on SOLR-2923:
------------------------------------

Hi Mark, thanks for the review!
                
> 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
>            Assignee: Mark Miller
>            Priority: Trivial
>             Fix For: 4.0
>
>         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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