Jing Zhao created HDFS-4059:
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Summary: Add number of stale DataNodes to metrics
Key: HDFS-4059
URL: https://issues.apache.org/jira/browse/HDFS-4059
Project: Hadoop HDFS
Issue Type: Sub-task
Affects Versions: 3.0.0
Reporter: Jing Zhao
Assignee: Jing Zhao
Priority: Minor
Add the number of stale DataNodes to metrics.
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