lucene-dev mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Michael McCandless (Commented) (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (LUCENE-3972) Improve AllGroupsCollector implementations
Date Thu, 12 Apr 2012 16:03:19 GMT

    [ https://issues.apache.org/jira/browse/LUCENE-3972?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13252518#comment-13252518
] 

Michael McCandless commented on LUCENE-3972:
--------------------------------------------

Actually, we are storing term ords here, not docIDs.

I think the high number of unique groups explains why the new patch is
faster: the time is likely dominated by re-ord'ing for each segment?

If you have fewer unique groups (and as the number of docs collected goes up),
I think the current impl should be faster...?

                
> 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


Mime
View raw message