Expose NN and DN hooks to service plugins
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Key: HDFS-460
URL: https://issues.apache.org/jira/browse/HDFS-460
Project: Hadoop HDFS
Issue Type: New Feature
Components: data-node, name-node
Reporter: Todd Lipcon
Assignee: Todd Lipcon
This is the other half of the old HADOOP-5640 (Allow ServicePlugins to hook
callbacks into key service events). It adds hooks to the NN and DN to expose
certain events to plugins.
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