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From Marvin Humphrey <mar...@rectangular.com>
Subject Re: Realtime Search
Date Wed, 24 Dec 2008 02:22:30 GMT
On Tue, Dec 23, 2008 at 05:51:43PM -0800, Jason Rutherglen wrote:

> Are there other implementation options?

Here's the plan for Lucy/KS:

  1) Design index formats that can be memory mapped rather than slurped,
     bringing the cost of opening/reopening an IndexReader down to a
     negligible level.
  2) Enable segment-centric sorted search. (LUCENE-1483) 
  3) Implement tombstone-based deletions, so that the cost of deleting
     documents scales with the number of deletions rather than the size of the
     index.
  4) Allow 2 concurrent writers: one for small, fast updates, and one for
     big background merges.

Marvin Humphrey


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