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Date: Tue, 7 Aug 2007 18:23:59 -0700 (PDT)
From: "Grant Ingersoll (JIRA)" <jira@apache.org>
To: java-dev@lucene.apache.org
Subject: [jira] Commented: (LUCENE-550) InstantiatedIndex - faster but
 memory consuming index
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    [ https://issues.apache.org/jira/browse/LUCENE-550?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12518291 ] 

Grant Ingersoll commented on LUCENE-550:
----------------------------------------

Hey Karl,

I started to look at this, but there are a few stoppers at this point for me:
1. No build file
2. Tests are virtually non-existent

It could also use some documentation, especially on the how and why of the InstantiatedIndex.

Cheers,
Grant


> InstantiatedIndex - faster but memory consuming index
> -----------------------------------------------------
>
>                 Key: LUCENE-550
>                 URL: https://issues.apache.org/jira/browse/LUCENE-550
>             Project: Lucene - Java
>          Issue Type: New Feature
>          Components: Store
>    Affects Versions: 2.0.0
>            Reporter: Karl Wettin
>            Assignee: Grant Ingersoll
>         Attachments: HitCollectionBench.jpg, lucene-550.jpg, LUCENE-550_20070804_no_core_changes.txt, test-reports.zip, trunk.diff.bz2, trunk.diff.bz2, trunk.diff.bz2, trunk.diff.bz2, trunk.diff.bz2, trunk.diff.bz2, trunk.diff.bz2, trunk.diff.bz2, trunk.diff.bz2, trunk.diff.bz2, trunk.diff.bz2
>
>
> An non file centrinc all in memory index. Consumes some 2x the memory of a RAMDirectory (in a term satured index) but is between 3x-60x faster depending on application and how one counts. Average query is about 8x faster. IndexWriter and IndexModifier have been realized in InterfaceIndexWriter and InterfaceIndexModifier. 
> InstantiatedIndex is wrapped in a new top layer index facade (class Index) that comes with factory methods for writers, readers and searchers for unison index handeling. There are decorators with notification handling that can be used for automatically syncronizing searchers on updates, et.c. 
> Index also comes with FS/RAMDirectory implementation.

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