Cache GET operation retrieves a Class instance instead of expected type

http://jenkins.mw.lab.eng.bos.redhat.com/hudson/job/hibernate-search-master-windows/org.hibernate$hibernate-search-infinispan/194/testReport/org.hibernate.search.infinispan/StoredIndexTest/testRestartingNode/

Error Message

HSEARCH000103: Unable to initialize IndexManager emails

Stacktrace

org.hibernate.search.SearchException: HSEARCH000103: Unable to initialize IndexManager emails
at org.hibernate.search.indexes.impl.IndexManagerHolder.createIndexManager(IndexManagerHolder.java:230)
at org.hibernate.search.indexes.impl.IndexManagerHolder.buildEntityIndexBinding(IndexManagerHolder.java:102)
at org.hibernate.search.spi.SearchFactoryBuilder.initDocumentBuilders(SearchFactoryBuilder.java:414)
at org.hibernate.search.spi.SearchFactoryBuilder.buildNewSearchFactory(SearchFactoryBuilder.java:222)
at org.hibernate.search.spi.SearchFactoryBuilder.buildSearchFactory(SearchFactoryBuilder.java:146)
at org.hibernate.search.event.impl.FullTextIndexEventListener.initialize(FullTextIndexEventListener.java:130)
at org.hibernate.search.hcore.impl.HibernateSearchIntegrator.integrate(HibernateSearchIntegrator.java:83)
at org.hibernate.internal.SessionFactoryImpl.<init>(SessionFactoryImpl.java:303)
at org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:1750)
at org.hibernate.search.test.util.FullTextSessionBuilder.build(FullTextSessionBuilder.java:182)
at org.hibernate.search.infinispan.StoredIndexTest.startNode(StoredIndexTest.java:121)
at org.hibernate.search.infinispan.StoredIndexTest.testRestartingNode(StoredIndexTest.java:53)
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 org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:44)
at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:15)
at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:41)
at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:20)
at org.junit.runners.BlockJUnit4ClassRunner.runNotIgnored(BlockJUnit4ClassRunner.java:79)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:71)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:49)
at org.junit.runners.ParentRunner$3.run(ParentRunner.java:193)
at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:52)
at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:191)
at org.junit.runners.ParentRunner.access$000(ParentRunner.java:42)
at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:184)
at org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:28)
at org.junit.internal.runners.statements.RunAfters.evaluate(RunAfters.java:31)
at org.junit.runners.ParentRunner.run(ParentRunner.java:236)
at org.apache.maven.surefire.junit4.JUnit4Provider.execute(JUnit4Provider.java:236)
at org.apache.maven.surefire.junit4.JUnit4Provider.executeTestSet(JUnit4Provider.java:134)
at org.apache.maven.surefire.junit4.JUnit4Provider.invoke(JUnit4Provider.java:113)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.apache.maven.surefire.util.ReflectionUtils.invokeMethodWithArray(ReflectionUtils.java:189)
at org.apache.maven.surefire.booter.ProviderFactory$ProviderProxy.invoke(ProviderFactory.java:165)
at org.apache.maven.surefire.booter.ProviderFactory.invokeProvider(ProviderFactory.java:85)
at org.apache.maven.surefire.booter.ForkedBooter.runSuitesInProcess(ForkedBooter.java:103)
at org.apache.maven.surefire.booter.ForkedBooter.main(ForkedBooter.java:74)
Caused by: java.lang.ClassCastException: java.lang.Class cannot be cast to [B
at org.infinispan.lucene.SingleChunkIndexInput.<init>(SingleChunkIndexInput.java:49)
at org.infinispan.lucene.InfinispanDirectory.openInput(InfinispanDirectory.java:290)
at org.apache.lucene.index.SegmentInfos$FindSegmentsFile.run(SegmentInfos.java:620)
at org.apache.lucene.index.SegmentInfos$FindSegmentsFile.run(SegmentInfos.java:554)
at org.apache.lucene.index.SegmentInfos.read(SegmentInfos.java:359)
at org.apache.lucene.index.IndexReader.indexExists(IndexReader.java:1099)
at org.hibernate.search.store.impl.DirectoryProviderHelper.initializeIndexIfNeeded(DirectoryProviderHelper.java:155)
at org.hibernate.search.infinispan.impl.InfinispanDirectoryProvider.start(InfinispanDirectoryProvider.java:103)
at org.hibernate.search.indexes.impl.DirectoryBasedIndexManager.initialize(DirectoryBasedIndexManager.java:104)
at org.hibernate.search.indexes.impl.IndexManagerHolder.createIndexManager(IndexManagerHolder.java:227)
... 42 more