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From "Martijn van Groningen (Commented) (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (LUCENE-3972) Improve AllGroupsCollector implementations
Date Thu, 12 Apr 2012 14:47:17 GMT

    [ https://issues.apache.org/jira/browse/LUCENE-3972?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13252467#comment-13252467
] 

Martijn van Groningen commented on LUCENE-3972:
-----------------------------------------------

I ran a test with the changes to SentinelIntSet and one without. Performance difference between
the two tests are minimal. The test with the changes is somewhat slower (15.7 s) than the
one without the changes (15.3 s).
                
> Improve AllGroupsCollector implementations
> ------------------------------------------
>
>                 Key: LUCENE-3972
>                 URL: https://issues.apache.org/jira/browse/LUCENE-3972
>             Project: Lucene - Java
>          Issue Type: Improvement
>          Components: modules/grouping
>            Reporter: Martijn van Groningen
>         Attachments: LUCENE-3972.patch, LUCENE-3972.patch
>
>
> I think that the performance of TermAllGroupsCollectorm, DVAllGroupsCollector.BR and
DVAllGroupsCollector.SortedBR can be improved by using BytesRefHash to store the groups instead
of an ArrayList.

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