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https://issues.apache.org/jira/browse/LUCENE-2750?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13705876#comment-13705876
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Adrien Grand commented on LUCENE-2750:
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FYI I ran his benchmark and the thing is that the version of kamikaze he is
using decompresses ints one by one instead of using routines that decompress a
full block in one go. Here is the relevant part of the kamikaze code base:
https://github.com/linkedin/kamikaze/blob/master/src/main/java/com/kamikaze/pfordelta/PForDelta.java#L114
decompressBBitSlotsWithHardCodes is commented out in favor of
decompressBBitSlots.
> add Kamikaze 3.0.1 into Lucene
> ------------------------------
>
> Key: LUCENE-2750
> URL: https://issues.apache.org/jira/browse/LUCENE-2750
> Project: Lucene - Core
> Issue Type: Sub-task
> Components: modules/other
> Reporter: hao yan
> Assignee: Adrien Grand
> Original Estimate: 336h
> Remaining Estimate: 336h
>
> Kamikaze 3.0.1 is the updated version of Kamikaze 2.0.0. It can achieve
> significantly better performance then Kamikaze 2.0.0 in terms of both
> compressed size and decompression speed. The main difference between the two
> versions is Kamikaze 3.0.x uses the much more efficient implementation of the
> PForDelta compression algorithm. My goal is to integrate the highly efficient
> PForDelta implementation into Lucene Codec.
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