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From "Terry Steichen" <>
Subject Re: Wildchar based search?? |
Date Sun, 02 Feb 2003 16:10:07 GMT

>From my experience, as I update the index (without optimizing), the number
of physical index files grows.  I typically use the number of files as an
indicator as to when optimization is required.  While I don't think Lucene
itself has any API to check this, a shell script or the application can do
so easily.



----- Original Message -----
From: "Leo Galambos" <>
To: "Lucene Users List" <>
Sent: Sunday, February 02, 2003 9:48 AM
Subject: Re: Wildchar based search?? |

> On Sat, 1 Feb 2003, Rishabh Bajpai wrote:
> > also, i rememebr readin somewhere that one had to build the index in
> > some special way, but since you say no; i will take that. i anyways dont
> > rememebr where I read it, so no point asking about something if I am
> > myself not sure....
> I remember only one problem that is related to indexing phase - it is
> ``optimize'' function. If you update your index, one cannot tell you if
> you must also call optimize() or not.
> If you do not call it, it may slow down queries (I do not know how much,
> but Otis told it). If you call it, it slows down the indexing phase (I
> have tested it and it is significant).
> AFAIK Lucene cannot tell you when the index becomes dirty so that you must
> call optimize. On the other hand it does not affect small indexes, where
> optimize() costs nothing.
> Otis, I think that this still holds. Right?
> -g-
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