[infinispan-issues] [JBoss JIRA] (ISPN-6347) Group operations throw NPE in BaseStateTransferInterceptor if grouping is disabled

Paul Ferraro created ISPN-6347: ---------------------------------- Summary: Group operations throw NPE in BaseStateTransferInterceptor if grouping is disabled Key: ISPN-6347 URL: https://issues.jboss.org/browse/ISPN-6347 Project: Infinispan Issue Type: Bug Components: Core Affects Versions: 8.1.2.Final, 8.2.0.Final Reporter: Paul Ferraro {code} 12:08:42,201 ERROR [org.infinispan.interceptors.InvocationContextInterceptor] (default task-1) ISPN000136: Error executing command GetKeysInGroupCommand, writing keys []: java.lang.NullPointerException at org.infinispan.interceptors.base.BaseStateTransferInterceptor.visitGetKeysInGroupCommand(BaseStateTransferInterceptor.java:50) at org.infinispan.commands.remote.GetKeysInGroupCommand.acceptVisitor(GetKeysInGroupCommand.java:95) at org.infinispan.interceptors.base.CommandInterceptor.invokeNextInterceptor(CommandInterceptor.java:99) at org.infinispan.interceptors.InvocationContextInterceptor.handleAll(InvocationContextInterceptor.java:107) at org.infinispan.interceptors.InvocationContextInterceptor.handleDefault(InvocationContextInterceptor.java:76) at org.infinispan.commands.AbstractVisitor.visitGetKeysInGroupCommand(AbstractVisitor.java:178) at org.infinispan.commands.remote.GetKeysInGroupCommand.acceptVisitor(GetKeysInGroupCommand.java:95) at org.infinispan.interceptors.InterceptorChain.invoke(InterceptorChain.java:336) at org.infinispan.cache.impl.CacheImpl.internalGetGroup(CacheImpl.java:490) at org.infinispan.cache.impl.CacheImpl.getGroup(CacheImpl.java:483) at org.infinispan.cache.impl.CacheImpl.getGroup(CacheImpl.java:478) at org.infinispan.cache.impl.AbstractDelegatingAdvancedCache.getGroup(AbstractDelegatingAdvancedCache.java:227) at org.wildfly.clustering.web.infinispan.session.fine.FineSessionAttributesFactory.createValue(FineSessionAttributesFactory.java:73) at org.wildfly.clustering.web.infinispan.session.fine.FineSessionAttributesFactory.createValue(FineSessionAttributesFactory.java:45) at org.wildfly.clustering.web.infinispan.session.InfinispanSessionFactory.createValue(InfinispanSessionFactory.java:55) at org.wildfly.clustering.web.infinispan.session.InfinispanSessionFactory.createValue(InfinispanSessionFactory.java:40) at org.wildfly.clustering.web.infinispan.session.InfinispanSessionManager.createSession(InfinispanSessionManager.java:256) at org.wildfly.clustering.web.undertow.session.DistributableSessionManager.createSession(DistributableSessionManager.java:109) at io.undertow.servlet.spec.ServletContextImpl.getSession(ServletContextImpl.java:741) at io.undertow.servlet.spec.HttpServletRequestImpl.getSession(HttpServletRequestImpl.java:370) at org.jboss.test.clusterbench.common.session.CommonGranularHttpSessionServlet.doGet(CommonGranularHttpSessionServlet.java:40) at javax.servlet.http.HttpServlet.service(HttpServlet.java:687) at javax.servlet.http.HttpServlet.service(HttpServlet.java:790) at io.undertow.servlet.handlers.ServletHandler.handleRequest(ServletHandler.java:85) at io.undertow.servlet.handlers.security.ServletSecurityRoleHandler.handleRequest(ServletSecurityRoleHandler.java:62) at io.undertow.servlet.handlers.ServletDispatchingHandler.handleRequest(ServletDispatchingHandler.java:36) at org.wildfly.extension.undertow.security.SecurityContextAssociationHandler.handleRequest(SecurityContextAssociationHandler.java:78) at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:43) at io.undertow.servlet.handlers.security.SSLInformationAssociationHandler.handleRequest(SSLInformationAssociationHandler.java:131) at io.undertow.servlet.handlers.security.ServletAuthenticationCallHandler.handleRequest(ServletAuthenticationCallHandler.java:57) at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:43) at io.undertow.security.handlers.AbstractConfidentialityHandler.handleRequest(AbstractConfidentialityHandler.java:46) at io.undertow.servlet.handlers.security.ServletConfidentialityConstraintHandler.handleRequest(ServletConfidentialityConstraintHandler.java:64) at io.undertow.security.handlers.AuthenticationMechanismsHandler.handleRequest(AuthenticationMechanismsHandler.java:60) at io.undertow.servlet.handlers.security.CachedAuthenticatedSessionHandler.handleRequest(CachedAuthenticatedSessionHandler.java:77) at io.undertow.security.handlers.NotificationReceiverHandler.handleRequest(NotificationReceiverHandler.java:50) at io.undertow.security.handlers.AbstractSecurityContextAssociationHandler.handleRequest(AbstractSecurityContextAssociationHandler.java:43) at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:43) at org.wildfly.extension.undertow.security.jacc.JACCContextIdHandler.handleRequest(JACCContextIdHandler.java:61) at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:43) at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:43) at io.undertow.servlet.handlers.ServletInitialHandler.handleFirstRequest(ServletInitialHandler.java:284) at io.undertow.servlet.handlers.ServletInitialHandler.dispatchRequest(ServletInitialHandler.java:263) at io.undertow.servlet.handlers.ServletInitialHandler.access$000(ServletInitialHandler.java:81) at io.undertow.servlet.handlers.ServletInitialHandler$1.handleRequest(ServletInitialHandler.java:174) at io.undertow.server.Connectors.executeRootHandler(Connectors.java:202) at io.undertow.server.HttpServerExchange$1.run(HttpServerExchange.java:793) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) at java.lang.Thread.run(Thread.java:745) {code} Obviously, this is an invalid condition - but we should handle it more gracefully, e.g. returning an empty map or throwing an 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