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From "Han Jiang (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (LUCENE-3069) Lucene should have an entirely memory resident term dictionary
Date Fri, 23 Aug 2013 13:30:58 GMT

     [ https://issues.apache.org/jira/browse/LUCENE-3069?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Han Jiang updated LUCENE-3069:
------------------------------

    Attachment: LUCENE-3069.patch

Patch, it will show how current codecs (Block/BlockTree + Lucene4X/Pulsing/Mock*) are changed
according to our API refactoring. TestBackwardsCompatibility still fails, and I'll work on
the impersonation later.
                
> Lucene should have an entirely memory resident term dictionary
> --------------------------------------------------------------
>
>                 Key: LUCENE-3069
>                 URL: https://issues.apache.org/jira/browse/LUCENE-3069
>             Project: Lucene - Core
>          Issue Type: Improvement
>          Components: core/index, core/search
>    Affects Versions: 4.0-ALPHA
>            Reporter: Simon Willnauer
>            Assignee: Han Jiang
>              Labels: gsoc2013
>             Fix For: 5.0, 4.5
>
>         Attachments: df-ttf-estimate.txt, example.png, LUCENE-3069.patch, LUCENE-3069.patch,
LUCENE-3069.patch, LUCENE-3069.patch, LUCENE-3069.patch, LUCENE-3069.patch, LUCENE-3069.patch,
LUCENE-3069.patch, LUCENE-3069.patch, LUCENE-3069.patch, LUCENE-3069.patch
>
>
> FST based TermDictionary has been a great improvement yet it still uses a delta codec
file for scanning to terms. Some environments have enough memory available to keep the entire
FST based term dict in memory. We should add a TermDictionary implementation that encodes
all needed information for each term into the FST (custom fst.Output) and builds a FST from
the entire term not just the delta.

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