NPE when preloading cache with DeltaAware values ------------------------------------------------ Key: ISPN-4746 URL: https://issues.jboss.org/browse/ISPN-4746 Project: Infinispan Issue Type: Bug Components: Core Affects Versions: 6.0.2.Final, 7.0.0.Beta2 Reporter: Gustavo Fernandes Assignee: Gustavo Fernandes Fix For: 7.0.0.CR1, 7.0.0.Final {code:java} public class DeltaAwarePreloadTest extends MultipleCacheManagersTest { private static final int CLUSTER_SIZE = 1; @Override protected void createCacheManagers() throws Throwable { ConfigurationBuilder c = getDefaultClusteredCacheConfig(CacheMode.DIST_SYNC, false); c.persistence().addStore(new DummyInMemoryStoreConfigurationBuilder(c.persistence()).storeName(getClass().getSimpleName())).preload(true); createCluster(c, CLUSTER_SIZE); waitForClusterToForm(); } @Test public void testPreloadOnStart() throws PersistenceException { Cache<Object, Object> cache = caches().get(0); cache.put(1, new TestDeltaAware()); cache.stop(); cache.start(); } } {code} During preload, the {{NonTxDistributionInterceptor}} decides that is requires values from previous owners and tries to check if the local node is the primary owner. At this point, the WriteCH is null since no topology was ever updated. Here's the stacktrace: {code} Caused by: org.infinispan.persistence.spi.PersistenceException: Unable to preload! at org.infinispan.persistence.manager.PersistenceManagerImpl.preloadKey(PersistenceManagerImpl.java:620) at org.infinispan.persistence.manager.PersistenceManagerImpl.access$000(PersistenceManagerImpl.java:70) at org.infinispan.persistence.manager.PersistenceManagerImpl$1.processEntry(PersistenceManagerImpl.java:228) at org.infinispan.persistence.dummy.DummyInMemoryStore.process(DummyInMemoryStore.java:165) at org.infinispan.persistence.manager.PersistenceManagerImpl.preload(PersistenceManagerImpl.java:220) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:606) at org.infinispan.commons.util.ReflectionUtil.invokeAccessibly(ReflectionUtil.java:168) ... 37 more Caused by: java.lang.NullPointerException at org.infinispan.distribution.impl.DistributionManagerImpl.getWriteConsistentHash(DistributionManagerImpl.java:115) at org.infinispan.distribution.impl.DistributionManagerImpl.getConsistentHash(DistributionManagerImpl.java:105) at org.infinispan.distribution.impl.DistributionManagerImpl.getPrimaryLocation(DistributionManagerImpl.java:95) at org.infinispan.interceptors.locking.ClusteringDependentLogic$DistributionLogic.localNodeIsPrimaryOwner(ClusteringDependentLogic.java:395) at org.infinispan.interceptors.distribution.NonTxDistributionInterceptor.remoteGetBeforeWrite(NonTxDistributionInterceptor.java:131) at org.infinispan.interceptors.distribution.BaseDistributionInterceptor.handleNonTxWriteCommand(BaseDistributionInterceptor.java:195) at org.infinispan.interceptors.distribution.NonTxDistributionInterceptor.visitPutKeyValueCommand(NonTxDistributionInterceptor.java:72) at org.infinispan.commands.write.PutKeyValueCommand.acceptVisitor(PutKeyValueCommand.java:71) at org.infinispan.interceptors.base.CommandInterceptor.invokeNextInterceptor(CommandInterceptor.java:98) at org.infinispan.interceptors.DistCacheWriterInterceptor.visitPutKeyValueCommand(DistCacheWriterInterceptor.java:72) at org.infinispan.commands.write.PutKeyValueCommand.acceptVisitor(PutKeyValueCommand.java:71) at org.infinispan.interceptors.base.CommandInterceptor.invokeNextInterceptor(CommandInterceptor.java:98) at org.infinispan.interceptors.CacheLoaderInterceptor.visitPutKeyValueCommand(CacheLoaderInterceptor.java:113) at org.infinispan.commands.write.PutKeyValueCommand.acceptVisitor(PutKeyValueCommand.java:71) at org.infinispan.interceptors.base.CommandInterceptor.invokeNextInterceptor(CommandInterceptor.java:98) at org.infinispan.interceptors.EntryWrappingInterceptor.invokeNextAndApplyChanges(EntryWrappingInterceptor.java:376) at org.infinispan.interceptors.EntryWrappingInterceptor.setSkipRemoteGetsAndInvokeNextForDataCommand(EntryWrappingInterceptor.java:464) {code}