Lance Norskog created SOLR-4164:
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Summary: Result Grouping fails if no hits
Key: SOLR-4164
URL: https://issues.apache.org/jira/browse/SOLR-4164
Project: Solr
Issue Type: Bug
Components: SearchComponents - other, SolrCloud
Affects Versions: 4.0
Reporter: Lance Norskog
In SolrCloud, found a result grouping bug in the 4.0 release.
A distributed result grouping request under SolrCloud got this result:
{noformat}
Dec 10, 2012 10:32:07 PM org.apache.solr.common.SolrException log
SEVERE: null: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:1120)
at
org.apache.lucene.search.TopFieldCollector.create(TopFieldCollector.java:1069)
at
org.apache.lucene.search.grouping.AbstractSecondPassGroupingCollector.<init>(AbstractSecondPassGroupingCollector.java:75)
at
org.apache.lucene.search.grouping.term.TermSecondPassGroupingCollector.<init>(TermSecondPassGroupingCollector.java:49)
at
org.apache.solr.search.grouping.distributed.command.TopGroupsFieldCommand.create(TopGroupsFieldCommand.java:128)
at
org.apache.solr.search.grouping.CommandHandler.execute(CommandHandler.java:132)
at
org.apache.solr.handler.component.QueryComponent.process(QueryComponent.java:339)
at
org.apache.solr.handler.component.SearchHandler.handleRequestBody(SearchHandler.java:206)
{noformat}
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