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From "Han Jiang (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (LUCENE-3892) Add a useful intblock postings format (eg, FOR, PFOR, PFORDelta, Simple9/16/64, etc.)
Date Sat, 02 Jun 2012 14:21:23 GMT

    [ https://issues.apache.org/jira/browse/LUCENE-3892?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13287951#comment-13287951
] 

Han Jiang commented on LUCENE-3892:
-----------------------------------

Ah, yes, I forgot to use -Dtests.postingsformat...I can see the errors
now.

{quote}
TestDemo makes a nice TestMin... I usually start with TestDemo when
testing scary new code, and then it's a huge milestone once TestDemo
passes 
{quote}
Hmm, that means I should remove TestMin.java? This testcase works fine
for the patch.

{quote}
We should definitely cutover to BlockTree terms dict (I would upgrade
that TODO to a nocommit!).
{quote}
I'm not quite familiar with these sign stuff, shall I change all the 
"TODO" sign into "nocommit"? Are the signs related to documentation, 
or just marked to remember not to commit current codes?
                
> 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_pfor.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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