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From Michael McCandless <>
Subject Re: Move deletes to a top level boolean AND NOT query
Date Thu, 19 Feb 2009 18:52:23 GMT

I don't think anyone is working on it..., because It looks like this  
is a real hit to performance (the results I posted on LUCENE-1476).   
We shouldn't do it.

And, in fact, we should consider doing the reverse: taking filters  
that are now applied via iteration and instead distributing them down  
to each TermQuery (LUCENE-1536) via random-access API (if the filter  
can support it); that can give much better performance.

However I need to redo these tests once LUCENE-1345 is in.


Jason Rutherglen wrote:

> Is anyone working on this?  I can't find a patch.  I'll start one  
> unless someone has something to post.

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