I noticed your wiki post about sorting with a function query instead of the
Lucene sort mechanism. Did you see a significantly reduced memory footprint
by doing this? Did you reduce the number of fields you allowed users to sort
by?


Lance Norskog-2 wrote:
> 
> Sorting creates a large array with "roughly" an entry for every document
> in
> the index. If it is not on an 'integer' field it takes even more memory.
> If
> you do a sorted request and then don't sort for a while, that will drop
> the
> sort structures and trigger a giant GC.
> 
> We went through some serious craziness with sorting.
> 

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