[BOOKKEEPER-343] Failed to register hedwig JMX beans in test cases

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 4.1.0
• Fix Version/s: 4.2.0
• Component/s: hedwig-server
• Assignee: Sijie Guo
• Reporter: Sijie Guo
• Created: 16/Jul/12 14:24
• Updated: 13/Feb/13 15:46
• Resolved: 03/Aug/12 17:42

Description

failed to register jmx beans for hedwig running test cases.

the exception is as below:

2012-07-16 22:13:54,849 - WARN  - [Thread-134:ReadAheadCache@729] - Failed to register readahead cache with JMX
javax.management.InstanceAlreadyExistsException: org.apache.HedwigServer:name0=ReadAheadCache
        at com.sun.jmx.mbeanserver.Repository.addMBean(Repository.java:453)
        at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.internal_addObject(DefaultMBeanServerInterceptor.java:1484)
        at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.registerDynamicMBean(DefaultMBeanServerInterceptor.java:963)
        at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.registerObject(DefaultMBeanServerInterceptor.java:917)
        at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.registerMBean(DefaultMBeanServerInterceptor.java:312)
        at com.sun.jmx.mbeanserver.JmxMBeanServer.registerMBean(JmxMBeanServer.java:482)
        at org.apache.zookeeper.jmx.MBeanRegistry.register(MBeanRegistry.java:98)
        at org.apache.hedwig.server.persistence.ReadAheadCache.registerJMX(ReadAheadCache.java:727)
        at org.apache.hedwig.server.netty.PubSubServer.registerJMX(PubSubServer.java:300)
        at org.apache.hedwig.server.netty.PubSubServer$3.run(PubSubServer.java:395)
        at java.lang.Thread.run(Thread.java:680)