[jira] [Commented] (SOLR-1726) Deep Paging and Large Results Improvements

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[jira] [Commented] (SOLR-1726) Deep Paging and Large Results Improvements

Hudson (Jira)

    [ https://issues.apache.org/jira/browse/SOLR-1726?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13197947#comment-13197947 ]

Yonik Seeley commented on SOLR-1726:

You seemed to agree that it should be the external ID previously.

bq. Why is it any more dangerous than the action itself? If the reader has changed, this whole act is unnatural to begin with.

It's the degree of breakage.  Small change to index should yield a small amount of potential breakage - and it can be catastrophic (in unpredictable ways) if using internal docids.

> 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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