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From "Jason Rutherglen" <>
Subject Re: Realtime Search for Social Networks Collaboration
Date Mon, 08 Sep 2008 14:36:30 GMT
InstantiatedIndex isn't quite realtime.  Instead a new
InstantiatedIndex is created per transaction in Ocean and managed
thereafter.  This however is fairly easy to build and could offer
realtime in Lucene without adding the transaction logging.  It would
be good to find out what scope is acceptable for a Lucene core version
of realtime.  Perhaps this basic feature set is good enough.

On Mon, Sep 8, 2008 at 10:23 AM, Mark Miller <> wrote:
> Ning Li wrote:
>> I agree with Otis that the first step for Lucene is probably to
>> support real-time
>> search. The instantiated index in contrib seems to be something close..
> Maybe we should start fleshing out what we want in realtime search on the
> wiki?
> Could it be as simple as making InstantiatedIndex realtime (allow
> writes/read at same time?). Then you could search over your IndexReader as
> well as the InstantiatedIndex. Writes go to both the Writer and the
> InstantiatedIndex. Nothing is actually permanent until the true commit, but
> stuff is visible pretty fast...a new IndexReader view starts a fresh
> InstantiedIndex...
> Jasons realtime patch is still pretty large...would be nice if we could
> accomplish this with as few changes as possible...
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