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From "Han Jiang (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (LUCENE-3892) Add a useful intblock postings format (eg, FOR, PFOR, PFORDelta, Simple9/16/64, etc.)
Date Wed, 11 Jul 2012 10:14:34 GMT

     [ https://issues.apache.org/jira/browse/LUCENE-3892?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Han Jiang updated LUCENE-3892:
------------------------------

    Attachment: LUCENE-3892-for&pfor-with-javadoc.patch

Add javadocs for previous codes. I'm still not sure about the IOUtils.closeWhileHandlingException(),
I think the exceptions should not be suppressed when out.close() is called? This patch also
makes some minor change on randomness in testcase. 
The Pulsing parts in last patch is not included here, because they doesn't improve performance
significantly. 
                
> Add a useful intblock postings format (eg, FOR, PFOR, PFORDelta, Simple9/16/64, etc.)
> -------------------------------------------------------------------------------------
>
>                 Key: LUCENE-3892
>                 URL: https://issues.apache.org/jira/browse/LUCENE-3892
>             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.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
> http://blog.mikemccandless.com/2010/08/lucene-performance-with-pfordelta-codec.html
> ).
> I think this would make a good GSoC project.

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