Mailing-List: contact dev-help@lucene.apache.org; run by ezmlm
Precedence: bulk
Reply-To: dev@lucene.apache.org
Date: Thu, 12 Apr 2012 14:49:18 +0000 (UTC)
From: "Yonik Seeley (Commented) (JIRA)" <jira@apache.org>
To: dev@lucene.apache.org
Message-ID: 
 <780013475.17418.1334242158939.JavaMail.tomcat@hel.zones.apache.org>
In-Reply-To: 
 <1680645009.14961.1334182756796.JavaMail.tomcat@hel.zones.apache.org>
Subject: [jira] [Commented] (LUCENE-3972) Improve AllGroupsCollector
 implementations
MIME-Version: 1.0
Content-Type: text/plain; charset=utf-8
Content-Transfer-Encoding: 7bit


    [ https://issues.apache.org/jira/browse/LUCENE-3972?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13252469#comment-13252469 ] 

Yonik Seeley commented on LUCENE-3972:
--------------------------------------

bq. I would also patch it for the future in either case. 

Hmmm, if you don't know anything about the integer keys, then a little extra hashing by default is a good idea.
But we know a lot about docids, and extra hashing should just lead to an average-case slowdown.

                
> 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.

--
This message is automatically generated by JIRA.
If you think it was sent incorrectly, please contact your JIRA administrators: https://issues.apache.org/jira/secure/ContactAdministrators!default.jspa
For more information on JIRA, see: http://www.atlassian.com/software/jira

        
---------------------------------------------------------------------
To unsubscribe, e-mail: dev-unsubscribe@lucene.apache.org
For additional commands, e-mail: dev-help@lucene.apache.org