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From "Adrien Grand (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (LUCENE-8788) Order LeafReaderContexts by Estimated Number Of Hits
Date Tue, 21 May 2019 13:16:00 GMT

    [ https://issues.apache.org/jira/browse/LUCENE-8788?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16844820#comment-16844820
] 

Adrien Grand commented on LUCENE-8788:
--------------------------------------

I think this is definitely worth exploring. It looks like a subset of LUCENE-8727, since
we are only aiming at using fully collected slices here to speed up slices that have not been
collected yet.

> Order LeafReaderContexts by Estimated Number Of Hits
> ----------------------------------------------------
>
>                 Key: LUCENE-8788
>                 URL: https://issues.apache.org/jira/browse/LUCENE-8788
>             Project: Lucene - Core
>          Issue Type: Improvement
>            Reporter: Atri Sharma
>            Priority: Major
>
> We offer no guarantee on the order in which an IndexSearcher will look at segments during
a search operation. This can be improved for use cases where an engine using Lucene invokes
early termination and uses the partially collected hits. A better model would be if we sorted
segments by the estimated number of hits, thus increasing the probability of the overall relevance
of the returned partial results.



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