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From PabloS <>
Subject Re: OutOfMemory Problems Lucene 2.4 / Tomcat
Date Mon, 03 Nov 2008 21:37:46 GMT

Thanks hossman, but I've already 'solved' the problem without the need to
patch lucene. I had to code a bit around Lucene's visibility restrictions
but I've managed to completely skip the field caching mechanism and add
ehcache to it.

At the moment it seems to be working quite well, although not as fast as it
was when lucene performed the caching.

Thanks a lot for the info anyway.

hossman wrote:
> : I'm having a similar problem with my application, although we are using
> : lucene 2.3.2. The problem we have is that we are required to sort on
> most of
> : the fields (20 at least). Is there any way of changing the cache being
> used?
> there is a patch in Jira that takes a completley different approach
> towards dealing with sorting by using the *stored* values of the documents
> that match...
> theory it's "better" for use cases where:
>   1) you are confident you are going to get back a "small" result set in
>      proportion to the total size of your index.
>   2) you need to support sorting on "lots" of fields and don't have enough
>      ram for all of the FieldCaches of those fields
> So far the only person to test it out (and post comments) is the patch
> submitter, but if other people report success it might be worth adding as
> a contrib.
> (Disclaimer: it looks like the patch was updated after my last 
> review/comments.  i have not read, nor claim any opinion about the 
> currently attached patch)
> -Hoss
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