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From "Robert Muir (Created) (JIRA)" <>
Subject [jira] [Created] (LUCENE-3514) deep paging with Sort
Date Thu, 13 Oct 2011 15:18:13 GMT
deep paging with Sort

                 Key: LUCENE-3514
             Project: Lucene - Java
          Issue Type: Improvement
    Affects Versions: 3.4, 4.0
            Reporter: Robert Muir

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
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
* 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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