Chen Liang created HDFS-10742:
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Summary: Measurement of lock held time in FsDatasetImpl
Key: HDFS-10742
URL: https://issues.apache.org/jira/browse/HDFS-10742
Project: Hadoop HDFS
Issue Type: Improvement
Components: datanode
Affects Versions: 3.0.0-alpha2
Reporter: Chen Liang
Assignee: Chen Liang
This JIRA proposes to measure the time the of lock of {{FsDatasetImpl}} is held
by a thread. Doing so will allow us to measure lock statistics.
This can be done by extending the {{AutoCloseableLock}} lock object in
{{FsDatasetImpl}}. In the future we can also consider replacing the lock with a
read-write lock.
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