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From "Martijn van Groningen (Commented) (JIRA)" <>
Subject [jira] [Commented] (LUCENE-3496) Support grouping by IndexDocValues
Date Fri, 07 Oct 2011 19:10:29 GMT


Martijn van Groningen commented on LUCENE-3496:

Simon, this looks great!
The performance is much better now. An average the search time for grouping by BYTES_VAR_SORTED
is 329 ms and BYTES_FIXED_SORTED is 338 ms. The average search time for grouping by indexed
values is 310 ms. So grouping by IDV pretty close to grouping by indexed values!
> Support grouping by IndexDocValues
> ----------------------------------
>                 Key: LUCENE-3496
>                 URL:
>             Project: Lucene - Java
>          Issue Type: New Feature
>          Components: modules/grouping
>            Reporter: Martijn van Groningen
>         Attachments: LUCENE-3496.patch, LUCENE-3496.patch
> Although IDV is not yet finalized (More particular the SortedSource). I think we already
can discuss / investigate implementing grouping by IDV.

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