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From Shai Erera <>
Subject Lucene RAM buffer size limit
Date Mon, 26 Apr 2010 14:06:58 GMT

Today we limit the RAM buffer size to 2048. I was wondering why, until Mark
referenced me to that issue ( where someone complained
about it as well, but I didn't find a reason to why it's limited. I mean, I
understand it's probably an int is used somewhere, but all the issue says
here (
is "Maybe someday Lucene will allow a larger RAM buffer than 2GB".

Why "maybe"? :)

I set up a benchmark run on a new machine I got, 4xQuad, 64GB RAM, and turns
out I can't really take advantage of all that RAM ... :).

So I don't mind to look at the code, but I guess since Mike and a bunch of
other smarter people were on that issue, there is probably something I need
to know before I set to change it?

Appreciate your thoughts on that. Today, more and more machines come w/ more
than 2GB ...


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