Duplicate hits and missing hits in sorted search
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Key: LUCENE-456
URL: http://issues.apache.org/jira/browse/LUCENE-456
Project: Lucene - Java
Type: Bug
Components: Search
Versions: 1.4
Environment: JDK 1.4.2_06, probably OS independant, testet on Solaris 8 and
Win2000
Reporter: Martin Seitz
Priority: Minor
If using a searcher that subclasses from IndexSearcher I get different result
sets (besides the ordering of course). The problem only occurrs if the searcher
is wrapped by (Parallel)MultiSearcher and the index is not too small. The
number of hits returned by un unsorted and a sorted search are identical but
the hits are referencing different documents. A closer look at the result sets
revealed that the sorted search returns duplicate hits.
I created test cases for Lucene 1.4.3 as well as for the head release. The
problem showed up for both, the number of duplicates beeing bigger for the head
realease. The test cases are written for package org.apache.lucene.search.
There are messages describing the problem written to the console. In order to
see all those hints the asserts are commented out. So dont't be confused if
junit reports no errors. (Sorry, beeing a novice user of the bug tracker I
don't see any means to attach the test cases on this screen. Let's see.)
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