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From Erik Hatcher <>
Subject Re: MaxFieldLength or MaxFields?
Date Wed, 26 Oct 2005 10:23:00 GMT

On 26 Oct 2005, at 02:50, Jeff Rodenburg wrote:
> I'm considering building out an index that will flatten a data  
> structure,
> such that some Document "A" will have Fields 1,2 and 3.
> Fields 1 and 2 are indexed/tokenized field. Field 3 is indexed, and  
> will
> contain many discrete values (up to possibly 5000).

> Couple of questions:
> 1. Does the DEFAULT_MAX_FIELD_LENGTH on IndexWriter come into play  
> for Field
> 3? Field 3 values are added to the document individually, there's  
> just a
> bunch of them.

No.  The max field length only comes into play for tokenized  
(analyzed) fields.

> 2. Is MaxFieldLength a consideration for this?

The default is 10,000, so you're safe :)

   public final static int DEFAULT_MAX_FIELD_LENGTH = 10000;

> Any guidance before I go through the trouble of building the index  
> would be
> greatly appreciated.

Never be afraid to just try out things.  It's easy enough to whip up  
a simple Java program of only a few lines that would exercise this  
sort of thing.  A simple for loop adding 5000 identically named non- 
tokenized, indexed fields to a document would prove this to yourself.

And now with Ferret - - the fun  
and lightweight nature of Ruby will allow us to experiment with  
Lucene without even compilation (or suffering Python syntax :).


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