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https://issues.apache.org/jira/browse/LUCENE-2735?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Simon Willnauer updated LUCENE-2735:
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    Attachment: LUCENE-2735.patch

here is a new patch with fixed testcase and updated micro benchmark

> First Cut at GroupVarInt with FixedIntBlockIndexInput / Output
> --------------------------------------------------------------
>
>                 Key: LUCENE-2735
>                 URL: https://issues.apache.org/jira/browse/LUCENE-2735
>             Project: Lucene - Java
>          Issue Type: Improvement
>          Components: Index
>    Affects Versions: 4.0
>            Reporter: Simon Willnauer
>            Assignee: Simon Willnauer
>            Priority: Minor
>             Fix For: 4.0
>
>         Attachments: LUCENE-2735.patch, LUCENE-2735.patch, LUCENE-2735.patch, 
> LUCENE-2735_alt.patch
>
>
> I have hacked together a FixedIntBlockIndex impl with Group VarInt encoding - 
> this does way worse than standard codec in benchmarks but I guess that is 
> mainly due to the FixedIntBlockIndex limitations. Once LUCENE-2723 is in / or 
> builds with trunk again I will update and run some tests. The isolated 
> microbenchmark shows that there could be improvements over vint even in java 
> though and I am sure we can make it faster impl. wise.

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