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From bugzi...@apache.org
Subject DO NOT REPLY [Bug 12619] New: - Search hits vary with wildcard term and multiple index ordering.
Date Fri, 13 Sep 2002 15:22:31 GMT
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http://nagoya.apache.org/bugzilla/show_bug.cgi?id=12619

Search hits vary with wildcard term and multiple index ordering.

           Summary: Search hits vary with wildcard term and multiple index
                    ordering.
           Product: Lucene
           Version: 1.2
          Platform: PC
        OS/Version: Windows NT/2K
            Status: NEW
          Severity: Major
          Priority: Other
         Component: QueryParser
        AssignedTo: lucene-dev@jakarta.apache.org
        ReportedBy: eric.daws@uk.consulting.fujitsu.com


Using the final release lucene1.2.jar, if I perform a search using multiple 
indexes and a wildcard search term, the list of search results may vary 
according to the order of the physical index folders supplied.

Lucene expands a wildcard term by refering to the indexed terms contained in 
the first index in the list. It then uses this expanded query for all 
subsequent searches on all of the indexes. Therefore, if the first index 
contains a subset of terms from other indexes, the search will fail to match 
some terms from the second and subsequent indexes.

If the order of specified indexes is then changed, the number of resultant hits 
using the same search term will also change.

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