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From "Uwe Schindler" <...@thetaphi.de>
Subject RE: How to estimate the size of lucene .nrm file
Date Sun, 18 Sep 2011 08:51:02 GMT
Hi,

The size is easy to calculate (it needs one byte per document and field):

[Number of documents] * 1 byte * [number of indexed fields with norms
enabled]

-----
Uwe Schindler
H.-H.-Meier-Allee 63, D-28213 Bremen
http://www.thetaphi.de
eMail: uwe@thetaphi.de


> -----Original Message-----
> From: roz dev [mailto:rozdev29@gmail.com]
> Sent: Saturday, September 17, 2011 7:38 PM
> To: java-user@lucene.apache.org
> Subject: How to estimate the size of lucene .nrm file
> 
> Hi,
> 
> I want to estimate the size of .nrm file that lucene will generate for a
20 Gb
> index which has 2.5 Million Docs and 50 fields in each document.
> 
> Is there any formula to predict it?
> 
> And, what is the RAM cost of this nrm file.
> 
> Thanks
> Saroj


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