: Date: Mon, 08 Jun 2009 16:44:45 -0700 : From: Phil Hagelberg : Subject: Schema vs Dynamic Fields
: Is the use of a predefined schema primarily a "type safety" feature? : We're considering using Solr for a data set that is very free-form; will : we get much slower results if the majority of our data is in a dynamic : field such as: : : <dynamicField name="*" type="text" indexed="true" stored="true"/> : : I'm a little unclear on the trade-offs involved and would appreciate : a hint. There is some cost involved in every new "field" that exists in your index (regardless of wether it was explicitly declared, or sprang into existence because of a dynamicField declaration) but there are ways to mitigate some of those costs (omitNorms=true being a big one) in general the big advantage to explicitly delcaring fields is that you can customize their analysis/datatypes ... you can do similar things by having "type specific" dynamic fields but then youre fiend names must follow set convnetions based on data type. -Hoss
