Hi, Your boss seem to have opened also an issue in the bug tracker: https://issues.apache.org/jira/browse/LUCENE-3096
The solution and explanation why this is won't fix is also given there. Uwe ----- Uwe Schindler H.-H.-Meier-Allee 63, D-28213 Bremen http://www.thetaphi.de eMail: u...@thetaphi.de > -----Original Message----- > From: hao yan [mailto:hyan2...@gmail.com] > Sent: Friday, May 13, 2011 10:56 PM > To: java-user@lucene.apache.org > Cc: Xiaoyang Gu; hao yan > Subject: A bug in multisearcher? > > hi, guys > > Xiaoyang and I today just found a bug of lucene. > This is actually a Multi-searcher bug. 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 some of you guys can help us confirm or fix this bug > of lucene. I attached the code to reproduce this case. Please check it out. > > 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. > > > 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) { > try > { > 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); > } > writer.close(); > > > IndexSearcher searcher = new IndexSearcher(directory); > > TopDocs docs = searcher.search(query, 10); > System.out.println("SingleSearcher: testNumericRange: hitNum: " + > docs.totalHits); > for(ScoreDoc doc : docs.scoreDocs) > { > System.out.println(searcher.explain(query, doc.doc)); > } > searcher.close(); > > directory.close(); > } > > 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); > } > writer1.close(); > > 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); > } > writer2.close(); > > 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: " + > docs.totalHits); > for(ScoreDoc doc : docs.scoreDocs) > { > System.out.println(multiSearcher.explain(query, doc.doc)); > } > multiSearcher.close(); > > directory1.close(); > directory2.close(); > } > > > } > > --------------------------------------------------------------------- > To unsubscribe, e-mail: java-user-unsubscr...@lucene.apache.org > For additional commands, e-mail: java-user-h...@lucene.apache.org --------------------------------------------------------------------- To unsubscribe, e-mail: java-user-unsubscr...@lucene.apache.org For additional commands, e-mail: java-user-h...@lucene.apache.org
