Leon Gao created HDFS-15549:
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Summary: Improve DISK/ARCHIVE movement if they are on same
filesystem
Key: HDFS-15549
URL: https://issues.apache.org/jira/browse/HDFS-15549
Project: Hadoop HDFS
Issue Type: Sub-task
Components: datanode
Reporter: Leon Gao
Assignee: Leon Gao
When moving blocks between DISK/ARCHIVE, we should prefer the volume on the
same underlying filesystem and use "rename" instead of "copy" to save IO.
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