[jira] [Assigned] (LUCENE-3514) deep paging with Sort

["Michael McCandless (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/LUCENE-3514?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Michael McCandless reassigned LUCENE-3514:
------------------------------------------

    Assignee: Michael McCandless
    
> 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
>
> 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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