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From Michael McCandless <luc...@mikemccandless.com>
Subject Re: Questions about doc store files (.cfx)
Date Tue, 10 Nov 2009 18:46:19 GMT
On Tue, Nov 10, 2009 at 1:18 PM, Michael Busch <buschmic@gmail.com> wrote:

> I talked to Marvin on ApacheCon; in Lucy he wants to have all the compound
> file support in the store package, separately from the indexer. I think that
> would make sense in Lucene too, there's not really the need to have it
> tightly integrated in the IndexWriter and SegmentMerger. We can generalize
> the compound file concept further, so that with parallel indexes the files
> can be selected in either direction for inclusion in a compound file.
>
> E.g. if we separated the inverted index and store, so that they are
> logically two parallel index components, then the .cfx file as it works now
> would contain files from two parallel index components (term vectors from
> inverted index, stored fields from the store). This is fine if you don't
> want to update those components individually and can remain this way for the
> default IndexWriter implementation. But if we generalize the compound
> concept, then people can alter this behavior to better suit their update
> requirements.
>
> I think this would actually be a very clean design (even though it might
> sound complicated here).

This sounds great!

Mike

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