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From "michael streeton (JIRA)" <j...@apache.org>
Subject [jira] Updated: (LUCENE-1054) TermDocs.skipTo fails with an ArrayOutOfBoundsException from BitVector
Date Wed, 14 Nov 2007 13:52:43 GMT

     [ https://issues.apache.org/jira/browse/LUCENE-1054?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

michael streeton updated LUCENE-1054:
-------------------------------------

    Attachment: Test4.java

> TermDocs.skipTo fails with an ArrayOutOfBoundsException from BitVector
> ----------------------------------------------------------------------
>
>                 Key: LUCENE-1054
>                 URL: https://issues.apache.org/jira/browse/LUCENE-1054
>             Project: Lucene - Java
>          Issue Type: Bug
>          Components: Index, Query/Scoring, Search, Term Vectors
>    Affects Versions: 2.2
>         Environment: Java 1.5 and 1.6 exhibit error. OS Windows XP and Ubunbtu
>            Reporter: michael streeton
>         Attachments: Test4.java
>
>
> After a number of calls to TermDocs.skipTo, the following exception is thrown
> java.lang.ArrayIndexOutOfBoundsException: Array index out of range: 101306
>       at org.apache.lucene.util.BitVector.get(BitVector.java:72)
>       at org.apache.lucene.index.SegmentTermDocs.next(SegmentTermDocs.java:118)
>       at org.apache.lucene.index.SegmentTermDocs.skipTo(SegmentTermDocs.java:176)
>       at org.apache.lucene.index.MultiTermDocs.skipTo(MultiReader.java:413)
> This error only occurs in 2.2 works okay in 2.1 and in 2.2 if the index is built using
2.1. The following demonstrates the error. The document being skipTo is not greater than the
number of documents in the index.
> import java.io.File;
> import java.io.IOException;
> import java.util.Random;
> import org.apache.lucene.analysis.standard.StandardAnalyzer;
> import org.apache.lucene.document.Document;
> import org.apache.lucene.document.Field; import org.apache.lucene.document.Field.Index;
> import org.apache.lucene.document.Field.Store;
> import org.apache.lucene.index.CorruptIndexException;
> import org.apache.lucene.index.IndexReader;
> import org.apache.lucene.index.IndexWriter;
> import org.apache.lucene.index.MultiReader;
> import org.apache.lucene.index.Term;
> import org.apache.lucene.index.TermDocs; import org.apache.lucene.store.FSDirectory;
> import org.apache.lucene.store.LockObtainFailedException;
> public class Test4 {
>         /**
>          * @param args
>          * @throws IOException
>          * @throws LockObtainFailedException
>          * @throws CorruptIndexException
>          */
>         public static void main(String[] args) throws Exception {
>                 Random rand = new Random(0);
>                 FSDirectory[] dirs = new FSDirectory[10];
>                 boolean build = false;
>                 for (int i = 0; i < dirs.length; i++) {
>                         dirs[i] = FSDirectory.getDirectory("c:" + File.separator + "temp"
>                                         + File.separator + "lucenetest" + File.separator
>                                         + Integer.toString(i));
>                         if (!IndexReader.indexExists(dirs[i])) {
>                                 if (!build) {
>                                         System.out.println("Building Test Index Start");
>                                 }
>                                 build = true;
>                                 System.out.println("Building Index: " + dirs[i].getFile()
>                                                 + " Start");
>                                 IndexWriter writer = new IndexWriter(dirs[i],
>                                                 new StandardAnalyzer(), true);
>                                 for (int j = 0; j < 100000; j++) {
>                                         Document doc = new Document();
>                                         doc.add(new Field("i", Integer.toString(rand.nextInt(100)),
>                                                         Store.YES, Index.UN_TOKENIZED));
>                                         doc.add(new Field("j",
>                                                         Integer.toString(rand.nextInt(1000)),
Store.YES,
>                                                         Index.UN_TOKENIZED));
>                                         writer.addDocument(doc);
>                                 }
>                                 writer.optimize();
>                                 writer.close();
>                                 writer = null;
>                                 System.out.println("Building Index: " + dirs[i].getFile()
>                                                 + " Complete");
>                         }
>                         IndexReader reader = IndexReader.open(dirs[i]);
>                         for (int j = 0; j < 1000; j++) {
>                                 reader.deleteDocument(rand.nextInt(reader.maxDoc()));
>                         }
>                         reader.close();
>                 }
>                 if (build) {
>                         System.out.println("Building Test Index Complete");
>                 }
>                 System.out.println("Test Start");
>                 IndexReader[] readers = new IndexReader[dirs.length];
>                 for (int i = 0; i < dirs.length; i++) {
>                         readers[i] = IndexReader.open(dirs[i]);
>                 }
>                 IndexReader reader = new MultiReader(readers);
>                 TermDocs docs = reader.termDocs();
>                 for (int i = 0; i < 100; i++) {
>                         for (int j = 0; j < 1000; j++) {
>                                 try {
>                                         test(reader, docs, Integer.toString(i), Integer.toString(j));
>                                 } catch (Exception e) {
>                                         System.err.println("maxdoc=" + reader.maxDoc());
>                                         System.err.println("Test Failed at i=" + i +
" j=" + j);
>                                         throw e;
>                                 }
>                         }
>                 }
>                 docs.close();
>                 reader.close();
>                 System.out.println("Test Complete");
>         }
>         private static void test(IndexReader reader, TermDocs docs, String i,
>                         String j) throws Exception {
>                 docs.seek(new Term("i", i));
>                 while (docs.next())
>                         ;
>                 docs.seek(new Term("j", j));
>                 while (docs.next())
>                         ;
>                 docs.seek(new Term("i", i));
>                 if (docs.next()) {
>                         int doc = docs.doc();
>                         try {
>                                 while (docs.skipTo(doc + 1000)) {
>                                         doc = docs.doc();
>                                 }
>                         } catch (Exception e) {
>                                 System.err.println("doc=" + (doc + 1000) + ": deleted="
>                                                 + reader.isDeleted(doc + 1000));
>                                 throw e;
>                         }
>                 }
>                 docs.seek(new Term("j", j));
>                 if (docs.next()) {
>                         int doc = docs.doc();
>                         try {
>                                 while (docs.skipTo(doc + 1000)) {
>                                         doc = docs.doc();
>                                 }
>                         } catch (Exception e) {
>                                 System.err.println("doc=" + doc);
>                                 throw e;
>                         }
>                 }
>         }
> }

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