MBeanUtil dumps stacktrace from registerMBean
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Key: HADOOP-3371
URL: https://issues.apache.org/jira/browse/HADOOP-3371
Project: Hadoop Core
Issue Type: Bug
Components: metrics
Affects Versions: 0.18.0
Reporter: lohit vijayarenu
Priority: Minor
MBeanUtil catches dumps all exception thrown by registerMBean, which prints the
stacktrace for InstanceAlreadyExistsException in most of our testcases.
It should be fine to catch and ignore it and not print it.
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