[LUCENE-1510] InstantiatedIndexReader throws NullPointerException in norms() when used with a MultiReader

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 2.4
• Fix Version/s: 2.9
• Component/s: modules/other
• Lucene Fields: New
• Assignee: Karl Wettin
• Reporter: Robert Newson
• Created: 02/Jan/09 16:09
• Updated: 28/Aug/22 11:56
• Resolved: 08/Jan/09 09:42

Description

When using InstantiatedIndexReader under a MultiReader where the other Reader contains documents, a NullPointerException is thrown here;

public void norms(String field, byte[] bytes, int offset) throws IOException

{ byte[] norms = getIndex().getNormsByFieldNameAndDocumentNumber().get(field); System.arraycopy(norms, 0, bytes, offset, norms.length); }

the 'norms' variable is null. Performing the copy only when norms is not null does work, though I'm sure it's not the right fix.

java.lang.NullPointerException
at org.apache.lucene.store.instantiated.InstantiatedIndexReader.norms(InstantiatedIndexReader.java:297)
at org.apache.lucene.index.MultiReader.norms(MultiReader.java:273)
at org.apache.lucene.search.TermQuery$TermWeight.scorer(TermQuery.java:70)
at org.apache.lucene.search.IndexSearcher.search(IndexSearcher.java:131)
at org.apache.lucene.search.IndexSearcher.search(IndexSearcher.java:112)
at org.apache.lucene.search.Searcher.search(Searcher.java:136)
at org.apache.lucene.search.Searcher.search(Searcher.java:146)
at org.apache.lucene.store.instantiated.TestWithMultiReader.test(TestWithMultiReader.java:41)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at junit.framework.TestCase.runTest(TestCase.java:164)
at junit.framework.TestCase.runBare(TestCase.java:130)
at junit.framework.TestResult$1.protect(TestResult.java:106)
at junit.framework.TestResult.runProtected(TestResult.java:124)
at junit.framework.TestResult.run(TestResult.java:109)
at junit.framework.TestCase.run(TestCase.java:120)
at junit.framework.TestSuite.runTest(TestSuite.java:230)
at junit.framework.TestSuite.run(TestSuite.java:225)
at org.eclipse.jdt.internal.junit.runner.junit3.JUnit3TestReference.run(JUnit3TestReference.java:130)
at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:460)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:673)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:386)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:196)