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Posted to dev@lucene.apache.org by "ASF subversion and git services (JIRA)" <ji...@apache.org> on 2015/11/12 23:52:11 UTC

[jira] [Commented] (SOLR-6168) enhance collapse QParser so that "group head" documents can be selected by more complex sort options

    [ https://issues.apache.org/jira/browse/SOLR-6168?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15003130#comment-15003130 ] 

ASF subversion and git services commented on SOLR-6168:
-------------------------------------------------------

Commit 1714133 from hossman@apache.org in branch 'dev/trunk'
[ https://svn.apache.org/r1714133 ]

SOLR-6168: Add a 'sort' local param to the collapse QParser to support using complex sort options to select the representitive doc for each collapsed group

> enhance collapse QParser so that "group head" documents can be selected by more complex sort options
> ----------------------------------------------------------------------------------------------------
>
>                 Key: SOLR-6168
>                 URL: https://issues.apache.org/jira/browse/SOLR-6168
>             Project: Solr
>          Issue Type: Improvement
>    Affects Versions: 4.7.1, 4.8.1
>            Reporter: Umesh Prasad
>            Assignee: Joel Bernstein
>         Attachments: CollapsingQParserPlugin-6168.patch.1-1stcut, SOLR-6168-group-head-inconsistent-with-sort.patch, SOLR-6168.patch, SOLR-6168.patch, SOLR-6168.patch, SOLR-6168.patch, SOLR-6168.patch
>
>
> The fundemental goal of this issue is add additional support to the CollapseQParser so that as an alternative to the existing min/max localparam options, more robust sort syntax can be used to sort on multiple criteria when selecting the "group head" documents used to represent each collapsed group.
> Since support for arbitrary, multi-clause, sorting is almost certainly going to require more RAM then the existing min/max functionaly, this new functionality should be in addition to the existing min/max localparam implementation, not a replacement of it.
> (NOTE: early comments made in this jira may be confusing in historical context due to the way this issue was originally filed as a bug report)



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