Eduard Tudenhoefner created CASSANDRA-12869:
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Summary: Don't load mx4j beans twice
Key: CASSANDRA-12869
URL: https://issues.apache.org/jira/browse/CASSANDRA-12869
Project: Cassandra
Issue Type: Bug
Components: Core
Reporter: Eduard Tudenhoefner
Assignee: Eduard Tudenhoefner
This happens on *cassandra-3.X* and *trunk* because there are two calls to
{{Mx4jTool.maybeLoad()}}. I think this was an unintentional side-effect of
CASSANDRA-12274
{code}
WARN [main] 2016-11-02 09:07:09,294 Mx4jTool.java:72 - Could not start
register mbean in JMX
javax.management.InstanceAlreadyExistsException: system:name=http
at com.sun.jmx.mbeanserver.Repository.addMBean(Repository.java:437)
~[na:1.8.0_91]
at
com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.registerWithRepository(DefaultMBeanServerInterceptor.java:1898)
~[na:1.8.0_91]
at
com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.registerDynamicMBean(DefaultMBeanServerInterceptor.java:966)
~[na:1.8.0_91]
at
com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.registerObject(DefaultMBeanServerInterceptor.java:900)
~[na:1.8.0_91]
at
com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.registerMBean(DefaultMBeanServerInterceptor.java:324)
~[na:1.8.0_91]
at
com.sun.jmx.mbeanserver.JmxMBeanServer.registerMBean(JmxMBeanServer.java:522)
~[na:1.8.0_91]
at org.apache.cassandra.utils.Mx4jTool.maybeLoad(Mx4jTool.java:55)
~[main/:na]
at
org.apache.cassandra.service.CassandraDaemon.setup(CassandraDaemon.java:414)
[main/:na]
at
org.apache.cassandra.service.CassandraDaemon.activate(CassandraDaemon.java:603)
[main/:na]
at
org.apache.cassandra.service.CassandraDaemon.main(CassandraDaemon.java:737)
[main/:na]
{code}
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