[jboss-user] [JBoss Cache] New message: "Re: NPE in ClusteredCacheLoader (JBoss Cache 3.2.1.GA)"
Jamie S
do-not-reply at jboss.com
Wed Feb 10 10:35:05 EST 2010
User development,
A new message was posted in the thread "NPE in ClusteredCacheLoader (JBoss Cache 3.2.1.GA)":
http://community.jboss.org/message/525469#525469
Author : Jamie S
Profile : http://community.jboss.org/people/jamie.s
Message:
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You betcha!
Here it is.
To install: unzip it, and then run ant, specifying the root of jboss, and target 'install', like so:
ant -Djboss.install="/home/{whatever}/jboss5/jboss-5.1.0.GA" install
or you may just wish to edit build.xml to alter the jboss.install property.
The install target will recompile, jar up a sar file, and copy it into server/all/deploy
I tried two underlying cacheloaders, both FileCacheLoader and JDBCCacheLoader, with no change.
So, in this configuration, I am *only* running the ClusteredCacheLoader. (I commented out the FileCacheLoader in replsync-service.)
Note that I am running a single cluster node.
Here are some relevant bits from the server log:
10:22:04,363 INFO [STDOUT]
---------------------------------------------------------
GMS: address is 127.0.0.1:36794 (cluster=JBossCache-Cluster)
---------------------------------------------------------
10:22:06,379 INFO [RPCManagerImpl] Received new cluster view: [127.0.0.1:36794|0] [127.0.0.1:36794]
10:22:06,379 INFO [RPCManagerImpl] Cache local address is 127.0.0.1:36794
10:22:06,380 INFO [RPCManagerImpl] state was retrieved successfully (in 2.02 seconds)
10:22:06,380 INFO [ComponentRegistry] JBoss Cache version: JBossCache 'Malagueta' 3.2.1.GA
10:22:06,380 INFO [STDOUT] Calling cache.start...
10:22:06,381 INFO [STDOUT] Calling cache.getRoot...
10:22:06,381 INFO [STDOUT] getRoot returned: UnversionedNode[ /]
10:22:06,382 INFO [STDOUT] Calling addChild...
10:22:06,382 ERROR [STDERR] java.lang.NullPointerException
10:22:06,383 ERROR [STDERR] at org.jboss.cache.loader.ClusteredCacheLoader.exists(ClusteredCacheLoader.java:212)
10:22:06,383 ERROR [STDERR] at org.jboss.cache.loader.AbstractDelegatingCacheLoader.exists(AbstractDelegatingCacheLoader.java:94)
10:22:06,383 ERROR [STDERR] at org.jboss.cache.interceptors.CacheLoaderInterceptor.loadIfNeeded(CacheLoaderInterceptor.java:311)
10:22:06,383 ERROR [STDERR] at org.jboss.cache.interceptors.CacheLoaderInterceptor.visitGetNodeCommand(CacheLoaderInterceptor.java:176)
10:22:06,383 ERROR [STDERR] at org.jboss.cache.commands.read.GetNodeCommand.acceptVisitor(GetNodeCommand.java:76)
10:22:06,383 ERROR [STDERR] at org.jboss.cache.interceptors.base.CommandInterceptor.invokeNextInterceptor(CommandInterceptor.java:116)
10:22:06,383 ERROR [STDERR] at org.jboss.cache.interceptors.base.CommandInterceptor.handleDefault(CommandInterceptor.java:131)
10:22:06,383 ERROR [STDERR] at org.jboss.cache.commands.AbstractVisitor.visitGetNodeCommand(AbstractVisitor.java:115)
10:22:06,383 ERROR [STDERR] at org.jboss.cache.commands.read.GetNodeCommand.acceptVisitor(GetNodeCommand.java:76)
10:22:06,384 ERROR [STDERR] at org.jboss.cache.interceptors.base.CommandInterceptor.invokeNextInterceptor(CommandInterceptor.java:116)
10:22:06,384 ERROR [STDERR] at org.jboss.cache.interceptors.base.CommandInterceptor.handleDefault(CommandInterceptor.java:131)
10:22:06,384 ERROR [STDERR] at org.jboss.cache.commands.AbstractVisitor.visitGetNodeCommand(AbstractVisitor.java:115)
10:22:06,384 ERROR [STDERR] at org.jboss.cache.commands.read.GetNodeCommand.acceptVisitor(GetNodeCommand.java:76)
10:22:06,384 ERROR [STDERR] at org.jboss.cache.interceptors.base.CommandInterceptor.invokeNextInterceptor(CommandInterceptor.java:116)
10:22:06,384 ERROR [STDERR] at org.jboss.cache.interceptors.TxInterceptor.attachGtxAndPassUpChain(TxInterceptor.java:301)
10:22:06,384 ERROR [STDERR] at org.jboss.cache.interceptors.TxInterceptor.handleDefault(TxInterceptor.java:283)
10:22:06,384 ERROR [STDERR] at org.jboss.cache.commands.AbstractVisitor.visitGetNodeCommand(AbstractVisitor.java:115)
10:22:06,384 ERROR [STDERR] at org.jboss.cache.commands.read.GetNodeCommand.acceptVisitor(GetNodeCommand.java:76)
10:22:06,384 ERROR [STDERR] at org.jboss.cache.interceptors.base.CommandInterceptor.invokeNextInterceptor(CommandInterceptor.java:116)
10:22:06,384 ERROR [STDERR] at org.jboss.cache.interceptors.base.CommandInterceptor.handleDefault(CommandInterceptor.java:131)
10:22:06,385 ERROR [STDERR] at org.jboss.cache.commands.AbstractVisitor.visitGetNodeCommand(AbstractVisitor.java:115)
10:22:06,385 ERROR [STDERR] at org.jboss.cache.commands.read.GetNodeCommand.acceptVisitor(GetNodeCommand.java:76)
10:22:06,385 ERROR [STDERR] at org.jboss.cache.interceptors.base.CommandInterceptor.invokeNextInterceptor(CommandInterceptor.java:116)
10:22:06,385 ERROR [STDERR] at org.jboss.cache.interceptors.InvocationContextInterceptor.handleAll(InvocationContextInterceptor.java:178)
10:22:06,385 ERROR [STDERR] at org.jboss.cache.interceptors.InvocationContextInterceptor.handleDefault(InvocationContextInterceptor.java:130)
10:22:06,385 ERROR [STDERR] at org.jboss.cache.commands.AbstractVisitor.visitGetNodeCommand(AbstractVisitor.java:115)
10:22:06,385 ERROR [STDERR] at org.jboss.cache.commands.read.GetNodeCommand.acceptVisitor(GetNodeCommand.java:76)
10:22:06,385 ERROR [STDERR] at org.jboss.cache.interceptors.InterceptorChain.invoke(InterceptorChain.java:287)
10:22:06,385 ERROR [STDERR] at org.jboss.cache.invocation.CacheInvocationDelegate.getNode(CacheInvocationDelegate.java:494)
10:22:06,385 ERROR [STDERR] at org.jboss.cache.invocation.NodeInvocationDelegate.getChild(NodeInvocationDelegate.java:361)
10:22:06,385 ERROR [STDERR] at org.jboss.cache.invocation.NodeInvocationDelegate.addChild(NodeInvocationDelegate.java:330)
10:22:06,385 ERROR [STDERR] at com.something.test.Test.startService(Unknown Source)
10:22:06,386 ERROR [STDERR] at org.jboss.system.ServiceMBeanSupport.jbossInternalStart(ServiceMBeanSupport.java:376)
etc...
10:22:06,390 INFO [STDOUT] Calling rootNode.getChildrenNames...
10:22:06,391 INFO [CacheLoaderInterceptor] Cache loader was unable to load state
java.lang.NullPointerException
at org.jboss.cache.loader.ClusteredCacheLoader.getChildrenNames(ClusteredCacheLoader.java:118)
at org.jboss.cache.loader.AbstractDelegatingCacheLoader.getChildrenNames(AbstractDelegatingCacheLoader.java:84)
at org.jboss.cache.interceptors.CacheLoaderInterceptor.loadChildren(CacheLoaderInterceptor.java:359)
at org.jboss.cache.interceptors.CacheLoaderInterceptor.visitGetChildrenNamesCommand(CacheLoaderInterceptor.java:188)
at org.jboss.cache.commands.read.GetChildrenNamesCommand.acceptVisitor(GetChildrenNamesCommand.java:115)
at org.jboss.cache.interceptors.base.CommandInterceptor.invokeNextInterceptor(CommandInterceptor.java:116)
at org.jboss.cache.interceptors.base.CommandInterceptor.handleDefault(CommandInterceptor.java:131)
at org.jboss.cache.commands.AbstractVisitor.visitGetChildrenNamesCommand(AbstractVisitor.java:125)
at org.jboss.cache.commands.read.GetChildrenNamesCommand.acceptVisitor(GetChildrenNamesCommand.java:115)
at org.jboss.cache.interceptors.base.CommandInterceptor.invokeNextInterceptor(CommandInterceptor.java:116)
at org.jboss.cache.interceptors.base.CommandInterceptor.handleDefault(CommandInterceptor.java:131)
at org.jboss.cache.commands.AbstractVisitor.visitGetChildrenNamesCommand(AbstractVisitor.java:125)
at org.jboss.cache.commands.read.GetChildrenNamesCommand.acceptVisitor(GetChildrenNamesCommand.java:115)
at org.jboss.cache.interceptors.base.CommandInterceptor.invokeNextInterceptor(CommandInterceptor.java:116)
at org.jboss.cache.interceptors.TxInterceptor.attachGtxAndPassUpChain(TxInterceptor.java:301)
at org.jboss.cache.interceptors.TxInterceptor.handleDefault(TxInterceptor.java:283)
at org.jboss.cache.commands.AbstractVisitor.visitGetChildrenNamesCommand(AbstractVisitor.java:125)
at org.jboss.cache.commands.read.GetChildrenNamesCommand.acceptVisitor(GetChildrenNamesCommand.java:115)
at org.jboss.cache.interceptors.base.CommandInterceptor.invokeNextInterceptor(CommandInterceptor.java:116)
at org.jboss.cache.interceptors.base.CommandInterceptor.handleDefault(CommandInterceptor.java:131)
at org.jboss.cache.commands.AbstractVisitor.visitGetChildrenNamesCommand(AbstractVisitor.java:125)
at org.jboss.cache.commands.read.GetChildrenNamesCommand.acceptVisitor(GetChildrenNamesCommand.java:115)
at org.jboss.cache.interceptors.base.CommandInterceptor.invokeNextInterceptor(CommandInterceptor.java:116)
at org.jboss.cache.interceptors.InvocationContextInterceptor.handleAll(InvocationContextInterceptor.java:178)
at org.jboss.cache.interceptors.InvocationContextInterceptor.handleDefault(InvocationContextInterceptor.java:130)
at org.jboss.cache.commands.AbstractVisitor.visitGetChildrenNamesCommand(AbstractVisitor.java:125)
at org.jboss.cache.commands.read.GetChildrenNamesCommand.acceptVisitor(GetChildrenNamesCommand.java:115)
at org.jboss.cache.interceptors.InterceptorChain.invoke(InterceptorChain.java:287)
at org.jboss.cache.invocation.CacheInvocationDelegate.getChildrenNamesInternal(CacheInvocationDelegate.java:654)
at org.jboss.cache.invocation.CacheInvocationDelegate.getChildrenNames(CacheInvocationDelegate.java:639)
at org.jboss.cache.invocation.NodeInvocationDelegate.getChildrenNames(NodeInvocationDelegate.java:293)
at com.something.test.Test.startService(Unknown Source)
etc...
10:22:06,397 INFO [STDOUT] getChildrenNames returned:
Thank you for any help on this!!!
Jamie Strachan
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