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From "Michael McCandless (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (LUCENE-5127) FixedGapTermsIndex should use monotonic compression
Date Fri, 26 Jul 2013 14:25:49 GMT

    [ https://issues.apache.org/jira/browse/LUCENE-5127?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13720828#comment-13720828
] 

Michael McCandless commented on LUCENE-5127:
--------------------------------------------

+1, patch looks great.  Thanks Rob!
                
> FixedGapTermsIndex should use monotonic compression
> ---------------------------------------------------
>
>                 Key: LUCENE-5127
>                 URL: https://issues.apache.org/jira/browse/LUCENE-5127
>             Project: Lucene - Core
>          Issue Type: Improvement
>            Reporter: Robert Muir
>         Attachments: LUCENE-5127.patch, LUCENE-5127.patch, LUCENE-5127.patch
>
>
> for the addresses in the big in-memory byte[] and disk blocks, we could save a good deal
of RAM here.
> I think this codec just never got upgraded when we added these new packed improvements,
but it might be interesting to try to use for the terms data of sorted/sortedset DV implementations.
> patch works, but has nocommits and currently ignores the divisor. The annoying problem
there being that we have the shared interface with "get(int)" for PackedInts.Mutable/Reader,
but no equivalent base class for monotonics get(long)... 
> Still its enough that we could benchmark/compare for now.

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