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From "Doron Cohen (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (LUCENE-3120) span query matches too many docs when two query terms are the same unless inOrder=true
Date Thu, 19 May 2011 09:16:01 GMT

     [ https://issues.apache.org/jira/browse/LUCENE-3120?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Doron Cohen updated LUCENE-3120:
--------------------------------

    Attachment: LUCENE-3120.patch

Attached test case demonstrating the bug.

> span query matches too many docs when two query terms are the same unless inOrder=true
> --------------------------------------------------------------------------------------
>
>                 Key: LUCENE-3120
>                 URL: https://issues.apache.org/jira/browse/LUCENE-3120
>             Project: Lucene - Java
>          Issue Type: Bug
>          Components: core/search
>            Reporter: Doron Cohen
>            Priority: Minor
>             Fix For: 3.2, 4.0
>
>         Attachments: LUCENE-3120.patch
>
>
> spinoff of user list discussion - [SpanNearQuery - inOrder parameter|http://markmail.org/message/i4cstlwgjmlcfwlc].
> With 3 documents:
> *  "a b x c d"
> *  "a b b d"
> *  "a b x b y d"
> Here are a few queries (the number in parenthesis indicates expected #hits):
> These ones work *as expected*:
> * (1)  in-order, slop=0, "b", "x", "b"
> * (1)  in-order, slop=0, "b", "b"
> * (2)  in-order, slop=1, "b", "b"
> These ones match *too many* hits:
> * (1)  any-order, slop=0, "b", "x", "b"
> * (1)  any-order, slop=1, "b", "x", "b"
> * (1)  any-order, slop=2, "b", "x", "b"
> * (1)  any-order, slop=3, "b", "x", "b"
> These ones match *too many* hits as well:
> * (1)  any-order, slop=0, "b", "b"
> * (2)  any-order, slop=1, "b", "b"
> Each of the above passes when using a phrase query (applying the slop, no in-order indication
in phrase query).
> This seems related to a known overlapping spans issue - [non-overlapping Span queries|http://markmail.org/message/7jxn5eysjagjwlon]
- as indicated by Hoss, so we might decide to close this bug after all, but I would like to
at least have the junit that exposes the behavior in JIRA.

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