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From "Michael McCandless (JIRA)" <>
Subject [jira] [Commented] (LUCENE-3892) Add a useful intblock postings format (eg, FOR, PFOR, PFORDelta, Simple9/16/64, etc.)
Date Thu, 12 Jul 2012 23:03:34 GMT


Michael McCandless commented on LUCENE-3892:

I didn't commit lucene/core/src/java/org/apache/lucene/codecs/pfor/
-- your IDE had changed it to a wildcard import (I prefer we stick with individual imports).

Was the numBits==0 case for all 0s not all 1s?  We may want to have it mean all 1s instead?
> Add a useful intblock postings format (eg, FOR, PFOR, PFORDelta, Simple9/16/64, etc.)
> -------------------------------------------------------------------------------------
>                 Key: LUCENE-3892
>                 URL:
>             Project: Lucene - Java
>          Issue Type: Improvement
>            Reporter: Michael McCandless
>              Labels: gsoc2012, lucene-gsoc-12
>             Fix For: 4.1
>         Attachments: LUCENE-3892-BlockTermScorer.patch, LUCENE-3892-direct-IntBuffer.patch,
LUCENE-3892-for&pfor-with-javadoc.patch, LUCENE-3892-for&pfor-with-javadoc.patch,
LUCENE-3892-for&pfor.patch, LUCENE-3892-handle_open_files.patch, LUCENE-3892_for.patch,
LUCENE-3892_for_byte[].patch, LUCENE-3892_for_int[].patch, LUCENE-3892_for_unfold_method.patch,
LUCENE-3892_pfor.patch, LUCENE-3892_pfor.patch, LUCENE-3892_pfor.patch, LUCENE-3892_pfor_unfold_method.patch,
LUCENE-3892_pulsing_support.patch, LUCENE-3892_settings.patch, LUCENE-3892_settings.patch
> On the flex branch we explored a number of possible intblock
> encodings, but for whatever reason never brought them to completion.
> There are still a number of issues opened with patches in different
> states.
> Initial results (based on prototype) were excellent (see
> ).
> I think this would make a good GSoC project.

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