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From "Erik Hatcher (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (SOLR-1726) Deep Paging and Large Results Improvements
Date Wed, 16 May 2012 20:51:08 GMT

    [ https://issues.apache.org/jira/browse/SOLR-1726?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13277133#comment-13277133
] 

Erik Hatcher commented on SOLR-1726:
------------------------------------

What's the status of this?   We still have in trunk CHANGES.txt this:

{code}
* SOLR-1726: Added deep paging support to search (sort by score only) which should use less
memory when paging deeply into results
 by keeping the priority queue small. (Manojkumar Rangasamy Kannadasan, gsingers)
{code}

but the code has been reverted from trunk as I understand it.  Remove the CHANGES entry until
this gets straightened out?
                
> Deep Paging and Large Results Improvements
> ------------------------------------------
>
>                 Key: SOLR-1726
>                 URL: https://issues.apache.org/jira/browse/SOLR-1726
>             Project: Solr
>          Issue Type: Improvement
>            Reporter: Grant Ingersoll
>            Assignee: Grant Ingersoll
>            Priority: Minor
>             Fix For: 4.0
>
>         Attachments: CommonParams.java, QParser.java, QueryComponent.java, ResponseBuilder.java,
SOLR-1726.patch, SOLR-1726.patch, SolrIndexSearcher.java, TopDocsCollector.java, TopScoreDocCollector.java
>
>
> 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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