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https://issues.apache.org/jira/browse/LUCENE-4892?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Adrien Grand updated LUCENE-4892:
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    Attachment: LUCENE-4892.patch

> Create a compressed LiveDocsFormat
> ----------------------------------
>
>                 Key: LUCENE-4892
>                 URL: https://issues.apache.org/jira/browse/LUCENE-4892
>             Project: Lucene - Core
>          Issue Type: New Feature
>            Reporter: Adrien Grand
>            Priority: Trivial
>              Labels: gsoc2014
>         Attachments: LUCENE-4892.patch
>
>
> There are lots of use-cases where the number of deleted documents is low. 
> This makes live docs very dense and I think it would be interesting to study 
> the impact of some bitmap compression techniques on performance (intuitively 
> I imagine it will be slower, but since it would make data smaller maybe CPU 
> caches could help us so I'd be curious to see how it would behave). This 
> format would make a good addition to our CheapBastardCodec.



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