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https://issues.apache.org/jira/browse/LUCENE-4686?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13555032#comment-13555032
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Michael McCandless commented on LUCENE-4686:
--------------------------------------------

+1

{noformat}
                    Task    QPS base      StdDev    QPS comp      StdDev        
        Pct diff
                PKLookup      181.92      (1.3%)      181.25      (2.0%)   
-0.4% (  -3% -    2%)
                 LowTerm       83.54      (2.0%)       85.61      (2.6%)    
2.5% (  -2% -    7%)
                 MedTerm       31.53      (0.9%)       33.01      (1.7%)    
4.7% (   2% -    7%)
                HighTerm       19.41      (0.8%)       20.57      (1.6%)    
6.0% (   3% -    8%)
{noformat}

                
> Write a specialized DGapVIntEncoder/Decoder for facets
> ------------------------------------------------------
>
>                 Key: LUCENE-4686
>                 URL: https://issues.apache.org/jira/browse/LUCENE-4686
>             Project: Lucene - Core
>          Issue Type: Improvement
>          Components: modules/facet
>            Reporter: Shai Erera
>            Assignee: Shai Erera
>         Attachments: LUCENE-4686.patch
>
>
> Today the default encoder/decoder for facets is DGap(VInt). That is a 
> DGapEncoder wrapping a VIntEncoder. Instead of this wrapping, we can write a 
> specialized DGapVIntEncoder which does it all in one call.

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