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From "Uwe Schindler" <...@thetaphi.de>
Subject RE: Upgrade lucene from 2.3.2 to 3.1.0
Date Mon, 14 Nov 2011 22:29:28 GMT
Hi,

> We plan to upgrade lucene from 2.3.2 to 3.1.0, from reading "Lucene In Action"
> I learned that we should "warm up" IndexSearcher and donot expect initial a
> few queries to be fast.

This was always the case, not only since Lucene 2.9/3.0. You should warm your searchers.

> But due to our special app we cannot "warm up" (each query has to use a new
> IndexSearcher), in lucene 2.3.2 this seems OK, Should we encounter obvious
> performance decrease in 3.1.0 if keeping this way?

This seems to be an XY problem. Why can you not reuse IndexReaders?

Uwe


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