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From "Fuad Efendi" <f...@efendi.ca>
Subject RE: Lucene FieldCache memory requirements
Date Tue, 03 Nov 2009 01:40:49 GMT
To be correct, I analyzed FieldCache awhile ago and I believed it never
"sizes down"...

/**
 * Expert: The default cache implementation, storing all values in memory.
 * A WeakHashMap is used for storage.
 *
 * <p>Created: May 19, 2004 4:40:36 PM
 *
 * @since   lucene 1.4
 */


Will it size down? Only if we are not faceting (as in SOLR v.1.3)...

And I am still unsure, Document ID vs. Object Pointer.




> 
> I don't understand this:
> > so with a ton of docs and a few uniques, you get a temp boost in the RAM
> > reqs until it sizes it down.
> 
> Sizes down??? Why is it called Cache indeed? And how SOLR uses it if it is
> not cache?
> 



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