FAQ
Restore top level disjunction performance
-----------------------------------------

Key: LUCENE-730
URL: http://issues.apache.org/jira/browse/LUCENE-730
Project: Lucene - Java
Issue Type: Improvement
Components: Search
Reporter: Paul Elschot
Priority: Minor


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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  • Paul Elschot (JIRA) at Nov 27, 2006 at 8:38 pm
    [ http://issues.apache.org/jira/browse/LUCENE-730?page=all ]

    Paul Elschot updated LUCENE-730:
    --------------------------------

    Attachment: TopLevelDisjunction20061127.patch

    This patches BooleanScorer2 to use BooleanScorer in the score(HitCollector) method.
    This also patches BooleanScorer to accept a minimum number of optional matchers.

    The patch also disables some test code: the use of checkSkipTo in QueryUtils
    caused a test failure in TestBoolean2 with the above changes. I think this
    could be expected because of the changed document scoring order
    for top level disjunction queries.
    At the moment I don't know how to resolve this.

    With the complete patch, all tests pass here.

    Restore top level disjunction performance
    -----------------------------------------

    Key: LUCENE-730
    URL: http://issues.apache.org/jira/browse/LUCENE-730
    Project: Lucene - Java
    Issue Type: Improvement
    Components: Search
    Reporter: Paul Elschot
    Priority: Minor
    Attachments: 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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postedNov 27, '06 at 8:33p
activeNov 27, '06 at 8:38p
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Paul Elschot (JIRA): 2 posts

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