locking for the ReflectionUtils.logThreadInfo is too conservative
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Key: HADOOP-1898
URL: https://issues.apache.org/jira/browse/HADOOP-1898
Project: Hadoop
Issue Type: Bug
Components: util
Reporter: Owen O'Malley
Assignee: Owen O'Malley
Fix For: 0.15.0
When the RPC servers get into trouble with their call queues backing up, they
occasionally dump the call stacks. These are very useful for identifying hot
spots, but the locking is too conservative and so all of the handlers are
blocked while the thread call stacks are dumped.
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