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https://issues.apache.org/jira/browse/LUCENE-5293?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13800901#comment-13800901
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Adrien Grand commented on LUCENE-5293:
--------------------------------------

bq. I also did a little bit of perfomance testing, the memory usage of the 
upperbound only constructor is higher, as expected.

Instead of keeping the oversized encoder, maybe the encoder could be resized to 
its actual size when finished encoding? This is what the other (wah8/pfor) sets 
do.

bq. and it reverts to FBS when this EliasFanoDocIdSet is not sufficiently 
smaller than an FBS

Maybe pfor/wah8 would still be useful here since they efficiently encode almost 
full sets?

> Also use EliasFanoDocIdSet in CachingWrapperFilter
> --------------------------------------------------
>
>                 Key: LUCENE-5293
>                 URL: https://issues.apache.org/jira/browse/LUCENE-5293
>             Project: Lucene - Core
>          Issue Type: Improvement
>          Components: core/search
>            Reporter: Paul Elschot
>            Priority: Minor
>         Attachments: LUCENE-5293.patch, LUCENE-5293.patch, LUCENE-5293.patch
>
>




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