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From Jake Mannix <jake.man...@gmail.com>
Subject Re: share some numbers for range queries
Date Mon, 16 Nov 2009 07:48:40 GMT
On Sun, Nov 15, 2009 at 11:02 PM, Uwe Schindler <uwe@thetaphi.de> wrote:


> the second approach is slower, when deleted docs
> are involved and 0 is inside the range (need to consult TermDocs).
>

This is a good point (and should be mentioned in your blog, John) - for
while
custom FieldCache-like implementations (ie bobo-browse, which additionally
isn't
restricted to single-valued fields) need not have this deficiency, for they
can choose to map
empty values to MAX_INT or something like that, the FCRF in its raw form
can really bite you, performance-wise, if you didn't notice that sometimes
your queries ran across zero and there were lots of deletes.

  -jake

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