leo sun created HDFS-16808:
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Summary: HDFS metrics will hold the previous value if there is no
new call
Key: HDFS-16808
URL: https://issues.apache.org/jira/browse/HDFS-16808
Project: Hadoop HDFS
Issue Type: Improvement
Components: hdfs
Reporter: leo sun
Attachments: image-2022-10-19-23-59-19-673.png
According to the implementation of MutableStat.snapshot(), HDFS metrics will
always hold the previous value if there is no more new call.
It will cause even if user switch active and standby, the previous ANN(standby
now) will always output the old value as the pic shows
!image-2022-10-19-23-59-19-673.png!
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