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From Otis Gospodnetic <otis_gospodne...@yahoo.com>
Subject Re: Sorting consumes hundreds of MBytes RAM
Date Mon, 14 Apr 2008 03:25:09 GMT
Timo,
That is true.  The only think I can recommend at the moment is to make sure you specify the
correct data type.  If your sort field is a numeric field, make that explicit.

Otis
--
Sematext -- http://sematext.com/ -- Lucene - Solr - Nutch

----- Original Message ----
From: Timo Nentwig <lucene@nitwit.de>
To: java-user@lucene.apache.org
Sent: Sunday, April 13, 2008 4:45:37 PM
Subject: Sorting consumes hundreds of MBytes RAM

Hi!

I found that when sorting the search result -depending on the amount of data 
in the field to sort by - this can easily lead to FieldCacheImpl to allocate 
hundreds of MByte RAM.

How does this work internally? It seems as if all data for this field found in 
the entire index is read into memory (?).

And question #2: what am I going to do against it? Index  sharding?

Thanks,
Timo

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