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From "Doron Cohen (JIRA)" <j...@apache.org>
Subject [jira] Commented: (LUCENE-504) FuzzyQuery produces a "java.lang.NegativeArraySizeException" in PriorityQueue.initialize if I use Integer.MAX_VALUE as BooleanQuery.MaxClauseCount
Date Mon, 12 Jun 2006 07:28:30 GMT
    [ http://issues.apache.org/jira/browse/LUCENE-504?page=comments#action_12415825 ] 

Doron Cohen commented on LUCENE-504:
------------------------------------

Yes this is correct - e.g. on a win32 machine with 2GB RAM, SUN 1.5 JRE would accept up to
Xmx1470m and in that case you could set the limit on the queue  size to 355,638,512 - 17%
of maxint, before getting an out of mem error.  

For allowing the caller maximal flexibility (and responsibility), BooleanQuery could interpret
the maxint as a hint saying "maximal possible value" and then silently modify it to maxint-1,
thereby avoiding the negative array size issue in PriorityQueue (and possibly fail later with
out of memory).

Is this what you have in mind?

> FuzzyQuery produces a "java.lang.NegativeArraySizeException" in PriorityQueue.initialize
if I use Integer.MAX_VALUE as BooleanQuery.MaxClauseCount
> --------------------------------------------------------------------------------------------------------------------------------------------------
>
>          Key: LUCENE-504
>          URL: http://issues.apache.org/jira/browse/LUCENE-504
>      Project: Lucene - Java
>         Type: Bug

>   Components: Search
>     Versions: 1.9
>     Reporter: Joerg Henss
>     Priority: Minor
>  Attachments: BooleanQuery.java.diff, PriorityQueue.java.diff, TestFuzzyQueryError.java
>
> PriorityQueue creates an "java.lang.NegativeArraySizeException" when initialized with
Integer.MAX_VALUE, because Integer overflows. I think this could be a general problem with
PriorityQueue. The Error occured when I set BooleanQuery.MaxClauseCount to Integer.MAX_VALUE
and user a FuzzyQuery for searching.

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