On Tue, Jun 16, 2009 at 12:41 PM, DM Smith<dmsmith...@gmail.com> wrote:
> I'll reiterate what this means to me. It is more than just file format > stability. An index must still be useful. An index is invalidated if the > analyzers, filters and/or token streams produce a different result. If these > change, the index is not really readable. I agree: what's the point of keeping index format compatibility for so long if tokenizers can produce different tokens. It seems like index file format & "the tokens produced by core tokenizers/filters" should have the same policy. Worse, it's necessary to be able to produce "old" tokens, compatibly, since you may have an "old" index. You don't want a mix of old & new tokens in your index. I think matchVersion is a great way to address these. We'd only add it to those analyzers that needed to change across versions, on demand. Mike --------------------------------------------------------------------- To unsubscribe, e-mail: java-dev-unsubscr...@lucene.apache.org For additional commands, e-mail: java-dev-h...@lucene.apache.org
