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From Grant Ingersoll <>
Subject Re: IndexReaderWriter
Date Thu, 21 Aug 2008 13:53:59 GMT

On Aug 21, 2008, at 5:42 AM, Michael McCandless wrote:

> I agree: getting real-time search working natively in Lucene is an
> important goal.

+1.  It's gotta be one of the most popular questions I get asked in  
training/consulting jobs.

> I think as an immediate step we should get Ocean committed in contrib?
> This way users can easily try it out, report back, etc.


> Ocean is nice in that it operates above Lucene's core (using
> InstantiatedIndex/Reader to handle the "live" additions).  Besides
> LUCENE-1314 (forcing IndexReader.reopen to return a clone even when no
> changes have been committed to the index), are there any other pending
> core changes that Ocean needs?
> Mike
> Jason Rutherglen wrote:
>> Hello all,
>> Michael McCandless and Yonik Seeley and I were discussing the  
>> IndexReaderWriter which would be a combined IndexReader and  
>> IndexWriter class.  The name of the class can change.  One key  
>> feature that can be added is realtime search.  Realtime search  
>> would enable Lucene to have database like functionality whereby  
>> each update is immediately searchable as opposed to today where  
>> each update is searchable after a commit.  The Ocean code  
>> implements realtime search and could provide the basis for this  
>> functionality.  I would like to get to an agreement on the scope  
>> and functionality of the project and gather input.
>> Thanks!
>> Jason Rutherglen
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