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From Scott Stanley <>
Subject RE: RE: Query performance with DateFilter
Date Wed, 09 Jan 2002 00:48:03 GMT

Thanks for the updated fix to support multiple queries. This seems to
do the trick for multiple queries.  We are not seeing the performance
degradation with multiple queries anymore.

Sorry for the delayed response to this, I don't know quite what
happened to the last month.....


>> From: Scott Stanley []
>> Thanks for the fix.  For a single query at a time, this does indeed
>> solve the problem.  The query performance comes back up to 
>> the level it
>> was before (a change from 17,000ms to 800ms with the test query we
>> using).
>> As you mentioned, however, performance does indeed 
>> suffer when
>> more than one query is being performed at a time.  With several 
>> simultanious queries, the timings degrades back to around 17s.
>Please find attached a fix that should also work for simulataneous
>If it works for you I will check it in.  Note that, in addition to
>to a bunch of lucene.index files, this has a new version of
>Tell me how it goes...

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