[CASSANDRA-6419] Setting max_hint_window_in_ms explicitly to null causes problems with JMX view

• Type: Bug
• Status: Resolved
• Priority: Low
• Resolution: Fixed
• Fix Version/s: 1.2.14, 2.0.4
• Component/s: Local/Config
• Severity: Low
• Assignee: Nate McCall
• Reporter: Nate McCall

Authors

Nate McCall

Reviewers

Jonathan Ellis

• Created: 28/Nov/13 17:04
• Updated: 16/Apr/19 09:31
• Resolved: 19/Dec/13 23:44

Description

Setting max_hint_window_in_ms to null in cassandra.yaml makes the StorageProxy mbean inaccessable.

Stack trace when trying to view the bean through MX4J:

Exception during http request
javax.management.RuntimeMBeanException: java.lang.NullPointerException
	at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.rethrow(DefaultMBeanServerInterceptor.java:839)
	at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.rethrowMaybeMBeanException(DefaultMBeanServerInterceptor.java:852)
	at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.getAttribute(DefaultMBeanServerInterceptor.java:651)
	at com.sun.jmx.mbeanserver.JmxMBeanServer.getAttribute(JmxMBeanServer.java:678)
	at mx4j.tools.adaptor.http.MBeanCommandProcessor.createMBeanElement(MBeanCommandProcessor.java:119)
	at mx4j.tools.adaptor.http.MBeanCommandProcessor.executeRequest(MBeanCommandProcessor.java:56)
	at mx4j.tools.adaptor.http.HttpAdaptor$HttpClient.run(HttpAdaptor.java:980)
Caused by: java.lang.NullPointerException
	at org.apache.cassandra.config.DatabaseDescriptor.getMaxHintWindow(DatabaseDescriptor.java:1161)
	at org.apache.cassandra.service.StorageProxy.getMaxHintWindow(StorageProxy.java:1506)
	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 sun.reflect.misc.Trampoline.invoke(MethodUtil.java:75)
	at sun.reflect.GeneratedMethodAccessor8.invoke(Unknown Source)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:606)
	at sun.reflect.misc.MethodUtil.invoke(MethodUtil.java:279)
	at com.sun.jmx.mbeanserver.StandardMBeanIntrospector.invokeM2(StandardMBeanIntrospector.java:112)
	at com.sun.jmx.mbeanserver.StandardMBeanIntrospector.invokeM2(StandardMBeanIntrospector.java:46)
	at com.sun.jmx.mbeanserver.MBeanIntrospector.invokeM(MBeanIntrospector.java:237)
	at com.sun.jmx.mbeanserver.PerInterface.getAttribute(PerInterface.java:83)
	at com.sun.jmx.mbeanserver.MBeanSupport.getAttribute(MBeanSupport.java:206)
	at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.getAttribute(DefaultMBeanServerInterceptor.java:647)
	... 4 more
Exception during http request