Null Pointer exception while performing "resetStatistics" in Infinispan 5.1.2
Hi,
I use the following snippet in order to invoke the StatisticsMBean and its operation resetStatistics.
MBeanServerConnection mBeanServer = ManagementFactory
.getPlatformMBeanServer();
String jmxQuery = "org.infinispan:type=Cache,name=" + "\""
+ cache.getName() + "(" + (cache.getCacheConfiguration().clustering().cacheModeString()).toLowerCase() + ")" + "\""
+ ",manager=" + "\"" + "DefaultCacheManager" + "\""
+ ",component=Statistics";
Set<ObjectInstance> queryResults;
Object result = null;
try {
queryResults = mBeanServer.queryMBeans(new ObjectName(jmxQuery),
null);
for (ObjectInstance objectInstance : queryResults) {
ObjectName objectName = objectInstance.getObjectName();
result = mBeanServer.invoke(objectName, "resetStatistics",
null, null);
}
} catch (Exception e) {
throw new RuntimeException(e.getMessage(), e);
}
However i get the following error when i execute this snippet:
5838 [main] DEBUG org.infinispan.jmx.ResourceDMBean - Invoke method called on resetStatistics
Exception in thread "main" java.lang.RuntimeException
at com.hp.ispan.jmx.test.MyTest.main(MyTest.java:81)
Caused by: javax.management.MBeanException
at org.infinispan.jmx.ResourceDMBean.invoke(ResourceDMBean.java:266)
at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.invoke(Unknown Source)
at com.sun.jmx.mbeanserver.JmxMBeanServer.invoke(Unknown Source)
at com.hp.ispan.jmx.test.MyTest.main(MyTest.java:75)
Caused by: java.lang.NullPointerException
at org.infinispan.jmx.ResourceDMBean.invoke(ResourceDMBean.java:259)
... 3 more
I am using the distribution clustering mode.
Pls help me to resolve this.
Regards
Sudheesh
