Yang Yun created HDFS-15207:
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Summary: VolumeScanner skip to scan blocks accessed during recent
scan peroid
Key: HDFS-15207
URL: https://issues.apache.org/jira/browse/HDFS-15207
Project: Hadoop HDFS
Issue Type: Improvement
Components: datanode
Reporter: Yang Yun
Assignee: Yang Yun
Check the access time of block file to avoid scanning recently changed blocks,
reducing disk IO.
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