Deadlock in metrics
-------------------
Key: HADOOP-8050
URL: https://issues.apache.org/jira/browse/HADOOP-8050
Project: Hadoop Common
Issue Type: Bug
Components: metrics
Affects Versions: 1.0.0, 0.20.205.0, 0.20.204.0
Reporter: Kihwal Lee
Fix For: 1.1.0, 1.0.1
The metrics serving thread and the periodic snapshot thread can deadlock.
It happened a few times on one of namenode we have. When it happens RPC works
but the web ui and hftp stop working. I haven't look at the trunk too closely,
but it might happen there too.
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