NPE's logged during reindex

At least one of the exceptions seems to be caused by an RTF document attachment. I verified the document opens correctly in both Word and TextEdit so it should be valid.

Sep 10, 2004 10:15:19 AM bucket.search.lucene.LuceneIndexer indexAll
SEVERE: Erroring indexing object: com.atlassian.confluence.pages.Attachment@9e
java.lang.NullPointerException
at com.atlassian.confluence.search.lucene.ConfluenceAttachmentLuceneDocumentFactory.createDocument(ConfluenceAttachmentLuceneDocumentFactory.java:14)
at bucket.search.lucene.LuceneIndexer.indexSingleObject(LuceneIndexer.java:239)
at bucket.search.lucene.LuceneIndexer.indexAll(LuceneIndexer.java:112)
at bucket.search.lucene.AbstractBatchIndexer.indexEntities(AbstractBatchIndexer.java:57)
at bucket.search.lucene.AbstractBatchIndexer$$FastClassByCGLIB$$e0fab4d1.invoke(<generated>)
at net.sf.cglib.proxy.MethodProxy.invoke(MethodProxy.java:189)
at org.springframework.aop.framework.Cglib2AopProxy$MethodInvocationImpl.invokeJoinpoint(Cglib2AopProxy.java:393)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:118)
at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:191)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:138)
at org.springframework.aop.framework.Cglib2AopProxy.intercept(Cglib2AopProxy.java:144)
at com.atlassian.confluence.search.lucene.BatchIndexer$$EnhancerByCGLIB$$ecef86e2.indexEntities(<generated>)
at com.atlassian.confluence.search.IndexingTask.run(IndexingTask.java:24)
at java.lang.Thread.run(Thread.java:534)
Sep 10, 2004 10:15:19 AM bucket.search.lucene.LuceneIndexer indexAll
SEVERE: Erroring indexing object: com.atlassian.confluence.pages.Attachment@aa
java.lang.NullPointerException
at com.atlassian.confluence.search.lucene.ConfluenceAttachmentLuceneDocumentFactory.createDocument(ConfluenceAttachmentLuceneDocumentFactory.java:14)
at bucket.search.lucene.LuceneIndexer.indexSingleObject(LuceneIndexer.java:239)
at bucket.search.lucene.LuceneIndexer.indexAll(LuceneIndexer.java:112)
at bucket.search.lucene.AbstractBatchIndexer.indexEntities(AbstractBatchIndexer.java:57)
at bucket.search.lucene.AbstractBatchIndexer$$FastClassByCGLIB$$e0fab4d1.invoke(<generated>)
at net.sf.cglib.proxy.MethodProxy.invoke(MethodProxy.java:189)
at org.springframework.aop.framework.Cglib2AopProxy$MethodInvocationImpl.invokeJoinpoint(Cglib2AopProxy.java:393)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:118)
at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:191)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:138)
at org.springframework.aop.framework.Cglib2AopProxy.intercept(Cglib2AopProxy.java:144)
at com.atlassian.confluence.search.lucene.BatchIndexer$$EnhancerByCGLIB$$ecef86e2.indexEntities(<generated>)
at com.atlassian.confluence.search.IndexingTask.run(IndexingTask.java:24)
at java.lang.Thread.run(Thread.java:534)
Sep 10, 2004 10:15:20 AM bucket.search.lucene.mapping.AttachmentLuceneDocumentFactory getAttachmentStringContent
SEVERE: Error extracting text from attachment: foobar.rtf
java.io.IOException: Invalid header signature; read 7015536635646467195, expected -2226271756974174256
at org.apache.poi.poifs.storage.HeaderBlockReader.<init>(HeaderBlockReader.java:125)
at org.apache.poi.poifs.filesystem.POIFSFileSystem.<init>(POIFSFileSystem.java:120)
at org.textmining.text.extraction.WordExtractor.extractText(WordExtractor.java:32)
at bucket.search.lucene.mapping.AttachmentLuceneDocumentFactory.getAttachmentStringContent(AttachmentLuceneDocumentFactory.java:104)
at bucket.search.lucene.mapping.AttachmentLuceneDocumentFactory.createDocument(AttachmentLuceneDocumentFactory.java:53)
at com.atlassian.confluence.search.lucene.ConfluenceAttachmentLuceneDocumentFactory.createDocument(ConfluenceAttachmentLuceneDocumentFactory.java:12)
at bucket.search.lucene.LuceneIndexer.indexSingleObject(LuceneIndexer.java:239)
at bucket.search.lucene.LuceneIndexer.indexAll(LuceneIndexer.java:112)
at bucket.search.lucene.AbstractBatchIndexer.indexEntities(AbstractBatchIndexer.java:57)
at bucket.search.lucene.AbstractBatchIndexer$$FastClassByCGLIB$$e0fab4d1.invoke(<generated>)
at net.sf.cglib.proxy.MethodProxy.invoke(MethodProxy.java:189)
at org.springframework.aop.framework.Cglib2AopProxy$MethodInvocationImpl.invokeJoinpoint(Cglib2AopProxy.java:393)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:118)
at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:191)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:138)
at org.springframework.aop.framework.Cglib2AopProxy.intercept(Cglib2AopProxy.java:144)
at com.atlassian.confluence.search.lucene.BatchIndexer$$EnhancerByCGLIB$$ecef86e2.indexEntities(<generated>)
at com.atlassian.confluence.search.IndexingTask.run(IndexingTask.java:24)
at java.lang.Thread.run(Thread.java:534)

Also seeing lots of errors mentioned in CONF-1713