Datanode classes should not directly use FSDataset
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Key: HDFS-2862
URL: https://issues.apache.org/jira/browse/HDFS-2862
Project: Hadoop HDFS
Issue Type: Improvement
Components: data-node
Reporter: Tsz Wo (Nicholas), SZE
Assignee: Tsz Wo (Nicholas), SZE
Datanode classes should only use the methods defined in FSDatasetInterface but
not directly use FSDataset.
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