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  1. Lucene - Core
  2. LUCENE-3096

MultiSearcher does not work correctly with Not on NumericRange


    • Bug
    • Status: Closed
    • Major
    • Resolution: Duplicate
    • 3.0.2
    • 3.1
    • core/search
    • None
    • New


      Hi, Keith

      My colleague xiaoyang and I just confirmed that this is actually due to a lucene bug on Multisearcher. In particular,

      If we search with Not on NumericRange and we use MultiSearcher, we
      will wrong search results (However, if we use IndexSearcher, the
      result is correct). Basically the NotOfNumericRange does not have
      impact on multisearcher. We suspect it is because the createWeight()
      function in MultiSearcher and hope you can help us to fix this bug of
      lucene. I attached the code to reproduce this case. Please check it

      In the attached code, I have two separate functions :

      (1) testNumericRangeSingleSearcher(Query query)
      where I create 6 documents, with a field called "id"= 1,2,3,4,5,6
      respectively . Then I search by the query which is
      +MatchAllDocs -NumericRange(3,3). The expected result then should
      be 5 hits since the document 3 is MUST_NOT.

      (2) testNumericRangeMultiSearcher(Query query)
      where i create 2 RamDirectory(), each of which has 3 documents,
      1,2,3; and 4,5,6. Then I search by the same query as above using
      multiSearcher. The expected result should also be 5 hits.

      However, from (1), we get 5 hits = expected results, while in (2) we
      get 6 hits != expected results.

      We also experimented this with our zoie/bobo open source tools and get
      the same results because our multi-bobo-browser is built on
      multi-searcher in lucene.

      I already emailed the lucene community group. Hopefully we can get some feedback soon.
      If you have any further concern, pls let me know!

      Thank you very much!

      Code: (based on lucene 3.0.x)

      import java.io.IOException;
      import java.io.PrintStream;
      import java.text.DecimalFormat;

      import org.apache.lucene.analysis.WhitespaceAnalyzer;

      import org.apache.lucene.document.Document;
      import org.apache.lucene.document.Field;
      import org.apache.lucene.document.NumericField;
      import org.apache.lucene.index.CorruptIndexException;
      import org.apache.lucene.index.IndexWriter;
      import org.apache.lucene.index.Term;

      import org.apache.lucene.search.BooleanQuery;
      import org.apache.lucene.search.FieldCache;
      import org.apache.lucene.search.IndexSearcher;

      import org.apache.lucene.search.MatchAllDocsQuery;
      import org.apache.lucene.search.MultiSearcher;

      import org.apache.lucene.search.NumericRangeQuery;
      import org.apache.lucene.search.Query;
      import org.apache.lucene.search.ScoreDoc;
      import org.apache.lucene.search.Searchable;
      import org.apache.lucene.search.Sort;
      import org.apache.lucene.search.SortField;
      import org.apache.lucene.search.TermQuery;
      import org.apache.lucene.search.TopDocs;

      import org.apache.lucene.search.BooleanClause.Occur;
      import org.apache.lucene.store.Directory;
      import org.apache.lucene.store.LockObtainFailedException;

      import org.apache.lucene.store.RAMDirectory;

      import com.convertlucene.ConvertFrom2To3;

      public class TestNumericRange
      public final static void main(String[] args)

      { BooleanQuery query = new BooleanQuery(); query.add(NumericRangeQuery.newIntRange("numId", 3, 3, true, true), Occur.MUST_NOT); query.add(new MatchAllDocsQuery(), Occur.MUST); testNumericRangeSingleSearcher(query); testNumericRangeMultiSearcher(query); }

      catch(Exception e)

      { e.printStackTrace(); }


      public static void testNumericRangeSingleSearcher(Query query)
      throws CorruptIndexException, LockObtainFailedException, IOException
      String[] ids =

      {"1", "2", "3", "4", "5", "6"}


      Directory directory = new RAMDirectory();

      IndexWriter writer = new IndexWriter(directory, new
      WhitespaceAnalyzer(), IndexWriter.MaxFieldLength.UNLIMITED);

      for (int i = 0; i < ids.length; i++)

      { Document doc = new Document(); doc.add(new Field("id", ids[i], Field.Store.YES, Field.Index.NOT_ANALYZED)); doc.add(new NumericField("numId").setIntValue(Integer.valueOf(ids[i]))); writer.addDocument(doc); }


      IndexSearcher searcher = new IndexSearcher(directory);

      TopDocs docs = searcher.search(query, 10);
      System.out.println("SingleSearcher: testNumericRange: hitNum: " +
      for(ScoreDoc doc : docs.scoreDocs)

      { System.out.println(searcher.explain(query, doc.doc)); }



      public static void testNumericRangeMultiSearcher(Query query) throws
      CorruptIndexException, LockObtainFailedException, IOException
      String[] ids1 =

      {"1", "2", "3"}

      Directory directory1 = new RAMDirectory();
      IndexWriter writer1 = new IndexWriter(directory1, new
      WhitespaceAnalyzer(), IndexWriter.MaxFieldLength.UNLIMITED);
      for (int i = 0; i < ids1.length; i++)

      { Document doc = new Document(); doc.add(new Field("id", ids1[i], Field.Store.YES, Field.Index.NOT_ANALYZED)); doc.add(new NumericField("numId").setIntValue(Integer.valueOf(ids1[i]))); writer1.addDocument(doc); }


      String[] ids2 =

      {"4", "5", "6"}

      Directory directory2 = new RAMDirectory();
      IndexWriter writer2 = new IndexWriter(directory2, new
      WhitespaceAnalyzer(), IndexWriter.MaxFieldLength.UNLIMITED);
      for (int i = 0; i < ids2.length; i++)

      { Document doc = new Document(); doc.add(new Field("id", ids2[i], Field.Store.YES, Field.Index.NOT_ANALYZED)); doc.add(new NumericField("numId").setIntValue(Integer.valueOf(ids2[i]))); writer2.addDocument(doc); }


      IndexSearcher[] searchers = new IndexSearcher[2];
      searchers[0] = new IndexSearcher(directory1);
      searchers[1] = new IndexSearcher(directory2);
      MultiSearcher multiSearcher = new MultiSearcher(searchers);
      TopDocs docs = multiSearcher.search(query, 10);
      System.out.println("MultiSearcher: testNumericRange: hitNum: " +
      for(ScoreDoc doc : docs.scoreDocs)

      { System.out.println(multiSearcher.explain(query, doc.doc)); }





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              Unassigned Unassigned
              john.wang@gmail.com John Wang
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