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From "Paul Elschot (JIRA)" <j...@apache.org>
Subject [jira] Commented: (LUCENE-730) Restore top level disjunction performance
Date Sat, 26 May 2007 19:18:17 GMT

    [ https://issues.apache.org/jira/browse/LUCENE-730?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12499344
] 

Paul Elschot commented on LUCENE-730:
-------------------------------------

No objection, only some remarks.

One bigger issue:

The latest patch defaults to docs in order above performance,
but my personal taste is to have performance by default.

And some smaller ones:

One could still adapt QueryUtills to take the possibility
of docs out of order into account.

Some performance tests with prohibited scorers could still
be needed to find out which of the boolean scorers does better
on them.


> Restore top level disjunction performance
> -----------------------------------------
>
>                 Key: LUCENE-730
>                 URL: https://issues.apache.org/jira/browse/LUCENE-730
>             Project: Lucene - Java
>          Issue Type: Improvement
>          Components: Search
>            Reporter: Paul Elschot
>         Assigned To: Michael Busch
>            Priority: Minor
>             Fix For: 2.2
>
>         Attachments: lucene-730.patch, TopLevelDisjunction20061127.patch
>
>
> This patch restores the performance of top level disjunctions. 
> The introduction of BooleanScorer2 had impacted this as reported
> on java-user on 21 Nov 2006 by Stanislav Jordanov.

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