[infinispan-issues] [JBoss JIRA] (ISPN-2787) NPE after ReplaceCommand

Michal Linhard (JIRA) jira-events at lists.jboss.org
Mon Feb 4 06:52:51 EST 2013 

    [ https://issues.jboss.org/browse/ISPN-2787?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12752003#comment-12752003 ] 

Michal Linhard commented on ISPN-2787:
--------------------------------------

The client stress test that this appeared in was actually JDG 6.1.0.ER10 with patch for ISPN-2776 (changed only MIMECacheEntry class)
but this is about the problem with replaceInternal return type being boolean, which doesn't correspond to possible return values of ReplaceCommand.perform (possibly any object and also null) - second possible exception here is ClassCastException.
                
> NPE after ReplaceCommand
> ------------------------
>
>                 Key: ISPN-2787
>                 URL: https://issues.jboss.org/browse/ISPN-2787
>             Project: Infinispan
>          Issue Type: Bug
>    Affects Versions: 5.2.0.Final
>            Reporter: Michal Linhard
>            Assignee: Mircea Markus
>
> (from https://jenkins.mw.lab.eng.bos.redhat.com/hudson/view/EDG6/view/EDG-REPORTS-PERF/job/edg-60-perf-client-stress-test-rest/87/artifact/report/size4/loganalysis/server/categories/cat8_entry0.txt)
> {code}
> 05:11:10,804 ERROR [org.apache.catalina.core.ContainerBase.[jboss.web].[default-host].[/].[Resteasy]] (http-/172.18.1.7:8080-15) Servlet.service() for servlet Resteasy threw exception: org.jboss.resteasy.spi.UnhandledException: java.lang.NullPointerException
> 	at org.jboss.resteasy.core.SynchronousDispatcher.handleApplicationException(SynchronousDispatcher.java:351) [resteasy-jaxrs-2.3.4.Final-redhat-2.jar:2.3.4.Final-redhat-2]
> 	at org.jboss.resteasy.core.SynchronousDispatcher.handleException(SynchronousDispatcher.java:220) [resteasy-jaxrs-2.3.4.Final-redhat-2.jar:2.3.4.Final-redhat-2]
> 	at org.jboss.resteasy.core.SynchronousDispatcher.handleInvokerException(SynchronousDispatcher.java:196) [resteasy-jaxrs-2.3.4.Final-redhat-2.jar:2.3.4.Final-redhat-2]
> 	at org.jboss.resteasy.core.SynchronousDispatcher.getResponse(SynchronousDispatcher.java:551) [resteasy-jaxrs-2.3.4.Final-redhat-2.jar:2.3.4.Final-redhat-2]
> 	at org.jboss.resteasy.core.SynchronousDispatcher.invoke(SynchronousDispatcher.java:513) [resteasy-jaxrs-2.3.4.Final-redhat-2.jar:2.3.4.Final-redhat-2]
> 	at org.jboss.resteasy.core.SynchronousDispatcher.invoke(SynchronousDispatcher.java:125) [resteasy-jaxrs-2.3.4.Final-redhat-2.jar:2.3.4.Final-redhat-2]
> 	at org.jboss.resteasy.plugins.server.servlet.ServletContainerDispatcher.service(ServletContainerDispatcher.java:208) [resteasy-jaxrs-2.3.4.Final-redhat-2.jar:2.3.4.Final-redhat-2]
> 	at org.jboss.resteasy.plugins.server.servlet.HttpServletDispatcher.service(HttpServletDispatcher.java:55) [resteasy-jaxrs-2.3.4.Final-redhat-2.jar:2.3.4.Final-redhat-2]
> 	at org.jboss.resteasy.plugins.server.servlet.HttpServletDispatcher.service(HttpServletDispatcher.java:50) [resteasy-jaxrs-2.3.4.Final-redhat-2.jar:2.3.4.Final-redhat-2]
> 	at javax.servlet.http.HttpServlet.service(HttpServlet.java:847) [jboss-servlet-api_3.0_spec-1.0.1.Final-redhat-2.jar:1.0.1.Final-redhat-2]
> 	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:329) [jbossweb-7.0.17.Final-redhat-1.jar:]
> 	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:248) [jbossweb-7.0.17.Final-redhat-1.jar:]
> 	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:275) [jbossweb-7.0.17.Final-redhat-1.jar:]
> 	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:161) [jbossweb-7.0.17.Final-redhat-1.jar:]
> 	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:155) [jbossweb-7.0.17.Final-redhat-1.jar:]
> 	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102) [jbossweb-7.0.17.Final-redhat-1.jar:]
> 	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109) [jbossweb-7.0.17.Final-redhat-1.jar:]
> 	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:372) [jbossweb-7.0.17.Final-redhat-1.jar:]
> 	at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:877) [jbossweb-7.0.17.Final-redhat-1.jar:]
> 	at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:679) [jbossweb-7.0.17.Final-redhat-1.jar:]
> 	at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:931) [jbossweb-7.0.17.Final-redhat-1.jar:]
> 	at java.lang.Thread.run(Thread.java:662) [rt.jar:1.6.0_38]
> Caused by: java.lang.NullPointerException
> 	at org.infinispan.CacheImpl.replaceInternal(CacheImpl.java:828) [infinispan-core-5.2.0.CR3-redhat-1.jar:5.2.0.CR3-redhat-1]
> 	at org.infinispan.CacheImpl.replace(CacheImpl.java:822) [infinispan-core-5.2.0.CR3-redhat-1.jar:5.2.0.CR3-redhat-1]
> 	at org.infinispan.CacheImpl.replace(CacheImpl.java:817) [infinispan-core-5.2.0.CR3-redhat-1.jar:5.2.0.CR3-redhat-1]
> 	at org.infinispan.AbstractDelegatingCache.replace(AbstractDelegatingCache.java:153) [infinispan-core-5.2.0.CR3-redhat-1.jar:5.2.0.CR3-redhat-1]
> 	at org.infinispan.rest.Server.putOrReplace(Server.scala:186) [infinispan-server-rest-5.2.0.CR3-redhat-1-classes.jar:]
> 	at org.infinispan.rest.Server.org$infinispan$rest$Server$$putInCache(Server.scala:157) [infinispan-server-rest-5.2.0.CR3-redhat-1-classes.jar:]
> 	at org.infinispan.rest.Server$$anonfun$putEntry$1.apply(Server.scala:133) [infinispan-server-rest-5.2.0.CR3-redhat-1-classes.jar:]
> 	at org.infinispan.rest.Server$$anonfun$putEntry$1.apply(Server.scala:120) [infinispan-server-rest-5.2.0.CR3-redhat-1-classes.jar:]
> 	at org.infinispan.rest.Server.protectCacheNotFound(Server.scala:254) [infinispan-server-rest-5.2.0.CR3-redhat-1-classes.jar:]
> 	at org.infinispan.rest.Server.putEntry(Server.scala:120) [infinispan-server-rest-5.2.0.CR3-redhat-1-classes.jar:]
> 	at sun.reflect.GeneratedMethodAccessor12.invoke(Unknown Source) [:1.6.0_38]
> 	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) [rt.jar:1.6.0_38]
> 	at java.lang.reflect.Method.invoke(Method.java:597) [rt.jar:1.6.0_38]
> 	at org.jboss.resteasy.core.MethodInjectorImpl.invoke(MethodInjectorImpl.java:167) [resteasy-jaxrs-2.3.4.Final-redhat-2.jar:2.3.4.Final-redhat-2]
> 	at org.jboss.resteasy.core.ResourceMethod.invokeOnTarget(ResourceMethod.java:257) [resteasy-jaxrs-2.3.4.Final-redhat-2.jar:2.3.4.Final-redhat-2]
> 	at org.jboss.resteasy.core.ResourceMethod.invoke(ResourceMethod.java:222) [resteasy-jaxrs-2.3.4.Final-redhat-2.jar:2.3.4.Final-redhat-2]
> 	at org.jboss.resteasy.core.ResourceMethod.invoke(ResourceMethod.java:211) [resteasy-jaxrs-2.3.4.Final-redhat-2.jar:2.3.4.Final-redhat-2]
> 	at org.jboss.resteasy.core.SynchronousDispatcher.getResponse(SynchronousDispatcher.java:536) [resteasy-jaxrs-2.3.4.Final-redhat-2.jar:2.3.4.Final-redhat-2]
> 	... 18 more
> {code}
> Seems like the NPE is caused by ReplaceCommand.perform returning null:
> https://github.com/infinispan/infinispan/blob/5.2.0.Final/core/src/main/java/org/infinispan/CacheImpl.java#L828
> Made possible here:
> https://github.com/infinispan/infinispan/blob/5.2.0.Final/core/src/main/java/org/infinispan/commands/write/ReplaceCommand.java#L105

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