Christoph Goller created LUCENE-7398:
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             Summary: Nested Span Queries are buggy
                 Key: LUCENE-7398
                 URL: https://issues.apache.org/jira/browse/LUCENE-7398
             Project: Lucene - Core
          Issue Type: Bug
          Components: core/search
    Affects Versions: 5.5, 6.x
            Reporter: Christoph Goller
            Priority: Critical


Example for a nested SpanQuery that is not working:

Document: Human Genome Organization , HUGO , is trying to coordinate gene 
mapping research worldwide.

Query: spanNear([body:coordinate, spanOr([spanNear([body:gene, body:mapping], 
0, true), body:gene]), body:research], 0, true)

The query should match "coordinate gene mapping research" as well as 
"coordinate gene research". It does not match  "coordinate gene mapping 
research" with Lucene 5.5 or 6.1, it did however match with Lucene 4.10.4. It 
probably stopped working with the changes on SpanQueries in 5.3. I will attach 
a unit test that shows the problem.



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