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From "Robert Muir (Commented) (JIRA)" <>
Subject [jira] [Commented] (SOLR-1726) Deep Paging and Large Results Improvements
Date Thu, 13 Oct 2011 14:54:11 GMT


Robert Muir commented on SOLR-1726:

right, we would have to add that support to Lucene first.

I think this isnt bad from the high level: we just generalize searchAfter(ScoreDoc after,
Query query, Filter filter, ..) to
searchAfter(ScoreDoc after, Query query, Filter filter, Sort sort, ...)

The problem is that there are 87 different specialized sorting collectors, and searchAfter
by score seems to be the real 
lucene use case, for 'deep paging thru results not sorted by score' I would use a database

I'm not against us adding it, just not motivated to for those reasons.
> Deep Paging and Large Results Improvements
> ------------------------------------------
>                 Key: SOLR-1726
>                 URL:
>             Project: Solr
>          Issue Type: Improvement
>            Reporter: Grant Ingersoll
>            Assignee: Grant Ingersoll
>            Priority: Minor
>             Fix For: 3.5, 4.0
> There are possibly ways to improve collections of "deep paging" by passing Solr/Lucene
more information about the last page of results seen, thereby saving priority queue operations.
  See LUCENE-2215.
> There may also be better options for retrieving large numbers of rows at a time that
are worth exploring.  LUCENE-2127.

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