Broaden NN#monitorHealth checks
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Key: HDFS-3090
URL: https://issues.apache.org/jira/browse/HDFS-3090
Project: Hadoop HDFS
Issue Type: Improvement
Affects Versions: 0.23.3
Reporter: Eli Collins
Currently the NN implementation of HAServiceProtocol#monitorHealth just calls
FSNamesystem#checkAvailableResources. We should extend this method to cover a
broader range of resources (eg HDFS-2704), but we should also extend
NN#monitorHealth to make other unrelated health checks (eg whether all its
important service threads are running, memory usage, etc).
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