Jing Zhao created HDFS-4095:
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Summary: Add snapshot related metrics
Key: HDFS-4095
URL: https://issues.apache.org/jira/browse/HDFS-4095
Project: Hadoop HDFS
Issue Type: Sub-task
Reporter: Jing Zhao
Assignee: Jing Zhao
Add metrics for number of snapshots in the system, including 1) number of
snapshot files, and 2) number of snapshot only files (snapshot file that are
not deleted but the original file is already deleted).
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