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LUCENE-5978: don't write a norm of infinity when analyzer returns no tokens 

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/trunk@1628463 13f79535-47bb-0310-9956-ffa450edef68
This commit is contained in:
Robert Muir 2014-09-30 15:10:24 +00:00
parent 804bd36ad2
commit 04a5e3a408
2 changed files with 18 additions and 1 deletions
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4
lucene/core/src/java/org/apache/lucene/index/DefaultIndexingChain.java
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@ -550,7 +550,9 @@ final class DefaultIndexingChain extends DocConsumer {
fieldInfo.setNormValueType(FieldInfo.DocValuesType.NUMERIC);
norms = new NormValuesWriter(fieldInfo, docState.docWriter.bytesUsed);
}
norms.addValue(docState.docID, similarity.computeNorm(invertState));
if (invertState.length != 0) {
norms.addValue(docState.docID, similarity.computeNorm(invertState));
}
}
termsHashPerField.finish();

15
lucene/core/src/test/org/apache/lucene/index/TestIndexWriter.java
View File

@ -33,6 +33,7 @@ import java.util.Set;
import java.util.concurrent.CountDownLatch;
import org.apache.lucene.analysis.Analyzer;
import org.apache.lucene.analysis.CannedTokenStream;
import org.apache.lucene.analysis.MockAnalyzer;
import org.apache.lucene.analysis.MockTokenFilter;
import org.apache.lucene.analysis.MockTokenizer;
@ -2798,5 +2799,19 @@ public class TestIndexWriter extends LuceneTestCase {
ids.add(id);
}
}
public void testEmptyNorm() throws Exception {
Directory d = newDirectory();
IndexWriter w = new IndexWriter(d, newIndexWriterConfig(new MockAnalyzer(random())));
Document doc = new Document();
doc.add(new TextField("foo", new CannedTokenStream()));
w.addDocument(doc);
w.commit();
w.close();
DirectoryReader r = DirectoryReader.open(d);
assertEquals(0, getOnlySegmentReader(r).getNormValues("foo").get(0));
r.close();
d.close();
}
}