[ 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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