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From "Hoss Man (JIRA)" <j...@apache.org>
Subject [jira] Updated: (LUCENE-569) NearSpans skipTo bug
Date Thu, 26 Oct 2006 23:33:19 GMT
     [ http://issues.apache.org/jira/browse/LUCENE-569?page=all ]

Hoss Man updated LUCENE-569:
----------------------------

    Lucene Fields: [Patch Available]
         Assignee: Hoss Man

> NearSpans skipTo bug
> --------------------
>
>                 Key: LUCENE-569
>                 URL: http://issues.apache.org/jira/browse/LUCENE-569
>             Project: Lucene - Java
>          Issue Type: Bug
>          Components: Search
>            Reporter: Hoss Man
>         Assigned To: Hoss Man
>         Attachments: common-build.assertions.patch, LUCENE-569.ubber.patch, NearSpans20060903.patch,
NearSpansOrdered.java, NearSpansUnordered.java, SpanNearQuery20060622.patch, SpanScorer.explain.testcase.patch,
TestNearSpans.java
>
>
> NearSpans appears to have a bug in skipTo that causes it to skip over some matching documents
completely.  I discovered this bug while investigating problems with SpanWeight.explain, but
as far as I can tell the Bug is not specific to Explanations ... it seems like it could potentially
result in incorrect matching in some situations where a SpanNearQuery is nested in another
query such thatskipTo will be used ... I tried to create a high level test case to exploit
the bug when searching, but i could not.  TestCase exploiting the class using NearSpan and
SpanScorer will follow...

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