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From "dyzc" <1393975...@qq.com>
Subject 回复: Why does this query slow down Lucene?
Date Fri, 17 Aug 2012 00:27:23 GMT
Yes. The query is bit long, which is the major reason.




------------------ 原始邮件 ------------------
发件人: "Trejkaz"<trejkaz@trypticon.org>;
发送时间: 2012年8月16日(星期四) 中午11:09
收件人: "java-user"<java-user@lucene.apache.org>; 

主题: Re: Why does this query slow down Lucene?



On Thu, Aug 16, 2012 at 11:27 AM, zhoucheng2008 <zhoucheng2008@gmail.com> wrote:
>
> +(title:21 title:a title:day title:once title:a title:month)

Looks like you have a fairly big boolean query going on here, and some
of the terms you're using are really common ones like "a".

Are you using AND or OR for the default operator? I think AND was
significantly faster.

I would also consider culling stop words to get things like "a" out of
the picture.

I also find it interesting that Lucene doesn't normalise title:a
title:a to title:a^2 or something. :)

TX

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