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From "Jesse Glick (JIRA)" <j...@codehaus.org>
Subject [jira] Created: (MINDEXER-14) FlatSearchResponse.totalHits = 1000 when there are in fact more
Date Thu, 24 Mar 2011 22:38:22 GMT
FlatSearchResponse.totalHits = 1000 when there are in fact more
---------------------------------------------------------------

                 Key: MINDEXER-14
                 URL: http://jira.codehaus.org/browse/MINDEXER-14
             Project: Maven Indexer
          Issue Type: Bug
    Affects Versions: 4.0.0
         Environment: Ubuntu, JDK 6; cause of: https://netbeans.org/bugzilla/show_bug.cgi?id=197036
            Reporter: Jesse Glick


I am running {{SearchEngine.searchFlatPaged}}. When there happen to be more than 1000 hits
in the result, it silently returns just 1000 instead. Surprising behavior since I did not
specify any hit limit. But this is {{AbstractSearchRequest.UNDEFINED_HIT_LIMIT}}, OK.

Where it gets weirder is that if you set {{resultHitLimit}} to {{UNDEFINED_HIT_LIMIT}}, you
still get 1000 results, contradicting the apparent meaning of "undefined". Further, if you
set it to 999 or 1001, and there are a few thousand results, you get an empty result and {{totalHits}}
of -1 or {{AbstractSearchResponse.LIMIT_EXCEEDED}} (which by the way looks like a constant
but is not final!), which is completely different than the behavior for 1000.

And passing in {{Integer.MAX_VALUE}} to begin with does not work, since then Lucene gets an
{{OutOfMemoryError}} trying to allocate a ridiculously large array or similar.

Expected behavior: by default, on an otherwise unconfigured search request, the indexer would
return all the hits, however many that is (allocating only a proportional amount of memory).
If I set {{resultHitLimit}} to some value, then that will be used - I will either get a complete
set of results, or {{LIMIT_EXCEEDED}}.

Workaround: set {{resultHitLimit}} to 1001, then go into a loop retrying the search; if -1
returned for {{totalHits}}, double the {{resultHitLimit}} and try again.

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