zhaoyunjiong created HDFS-7759:
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Summary: Provide existence-of-a-second-file implementation for
pinning blocks on Datanode
Key: HDFS-7759
URL: https://issues.apache.org/jira/browse/HDFS-7759
Project: Hadoop HDFS
Issue Type: Improvement
Components: datanode
Reporter: zhaoyunjiong
Assignee: zhaoyunjiong
Provide existence-of-a-second-file implementation for pinning blocks on
Datanode and let admin choosing the mechanism(use sticky bit or
existence-of-a-second-file) to pinning blocks on favored Datanode.
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