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From Otis Gospodnetic <>
Subject Re: Synchronization and merging indexes
Date Mon, 22 Dec 2008 03:15:42 GMT

My guess is you'll get more help if you post your question to the Lucene.Net mailing list
(and whose address I don't recall off the top of my head).

Otis --
Sematext -- -- Lucene - Solr - Nutch

----- Original Message ----
> From: chaiguy1337 <>
> To:
> Sent: Saturday, December 20, 2008 7:12:24 PM
> Subject: Synchronization and merging indexes
> Hi. I'm currently using Lucene.Net as the backing store for a client Windows
> app and it's working great, however I'm now looking at making this an
> occasionally-connected remote-synchronized store.
> In other words, I want to use one of the free online storage APIs out there
> that my users can subscribe to and provide login credentials, and use it to
> back up entire copies of the index (we're talking relatively small indexes
> here).
> The scenario should allow for multiple clients to be simultaneously
> modifying their local copies of the index, and therefore I will need to
> merge the indexes to allow for multiple sources of change.
> My question is first of all if anyone has any experience with this, just for
> some advice, but in particular I'm concerned with the merging process--does
> merging two indexes simply concatenate all documents in each, even if they
> are identical, or is there some kind of logic performed to union duplicates?
> If not, how should I go about doing that manually in an efficient way?
> I'm not terribly worried about conflicts or collisions--in the worst case I
> can simply duplicate the document, but I don't want duplicate copies of
> documents created when there is no conflict.
> Thanks for any advice.
> Logan
> -- 
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