Arpit Agarwal created HDFS-14221:
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Summary: Replace Guava Optional with Java Optional in DiskChecker
Key: HDFS-14221
URL: https://issues.apache.org/jira/browse/HDFS-14221
Project: Hadoop HDFS
Issue Type: Improvement
Reporter: Arpit Agarwal
Assignee: Arpit Agarwal
Datanode disk checker uses Guava Optional. We can replace that with Java
Optional.
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