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https://issues.apache.org/jira/browse/LUCENE-2785?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12965188#action_12965188
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Michael McCandless commented on LUCENE-2785:
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So... IndexSearcher.search (the one that sorts by score) throws an EXC if
numHits is 0...
Maybe... we should do the same for the sort-by-field case?
And, also make this new Collector that only counts hits? The exception message
can then point users to this new Collector?
I'm all for not making the app handle corner cases... but, then, I don't like
that you silently get bad performance. It's better to steer the apps to use
the right Collector for the job?
> TopFieldCollector throws AIOOBE if numHits is 0
> -----------------------------------------------
>
> Key: LUCENE-2785
> URL: https://issues.apache.org/jira/browse/LUCENE-2785
> Project: Lucene - Java
> Issue Type: Bug
> Components: Search
> Reporter: Michael McCandless
> Priority: Minor
> Fix For: 3.1, 4.0
>
>
> See solr-user thread "ArrayIndexOutOfBoundsException for query with rows=0
> and sort param".
> I think we should just create a null collector (only tallies up totalHits) if
> numHits is 0?
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