[huahaiy]

As I have repeated suggested, since you obviously know Lucene, it does not take much for you to write a few lines of Java code to say, "here, this is how it is supposed to be done".

Instead, you keeps giving all kind of excuses. You said you do not have time, but somehow you have time to write long wall of text like this. If you are not trolling, what you are doing then?

I pointed out to you why your suggestions will not make differences, some I have already tried. For example, initializing a query parser only once, but that would crash Lucene. Clearly, you do not know about this, so your knowledge of Lucene is not as good as you think you know.

Fair?