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Posted to dev@lucene.apache.org by "Robert Muir (JIRA)" <ji...@apache.org> on 2012/05/15 23:35:26 UTC
[jira] [Commented] (LUCENE-3514) deep paging with Sort
[ https://issues.apache.org/jira/browse/LUCENE-3514?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13276243#comment-13276243 ]
Robert Muir commented on LUCENE-3514:
-------------------------------------
Looks good! Thanks for tackling this. The API doesnt seem incomplete anymore.
> deep paging with Sort
> ---------------------
>
> Key: LUCENE-3514
> URL: https://issues.apache.org/jira/browse/LUCENE-3514
> Project: Lucene - Java
> Issue Type: Improvement
> Affects Versions: 3.4, 4.0
> Reporter: Robert Muir
> Assignee: Michael McCandless
> Labels: gsoc2012, lucene-gsoc-12
> Attachments: LUCENE-3514.patch, LUCENE-3514.patch
>
>
> We added IS.searchAfter(Query, Filter) but we don't support Sort yet with this API.
> I think it might be overkill at least at first to try to implement 12 collector variants for this.
> I put the following idea on SOLR-1726:
> One idea would be to start with one or two implementations (maybe in/out of order) for the sorting case, and dont overspecialize it yet.
> * for page 1, the ScoreDoc (FieldDoc really) will be null, so we just return the normal impl anyway.
> * even if our searchAfter isnt huper-duper fast, the user can always make the tradeoff like with page-by-score. they can always just pass null until like page 10 or something if they compute that it only starts to 'help' then.
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