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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 Mon, 09 Jul 2012 17:26:35 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-handle_open_files.patch

Current branch cannot pass tests like this: 
{noformat}
ant test -Dtestcase=TestConcurrentMergeScheduler -Dtests.method=testFlushExceptions -Dtests.seed=C2ED637AF330E96A
-Dtests.postingsformat=For 
{noformat}
Maybe we should handle the IndexOutput more gracefully?
                
> 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.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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