Move FSDataset interfaces and implementation to separated packages
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Key: HDFS-3080
URL: https://issues.apache.org/jira/browse/HDFS-3080
Project: Hadoop HDFS
Issue Type: Improvement
Components: data-node
Reporter: Tsz Wo (Nicholas), SZE
Assignee: Tsz Wo (Nicholas), SZE
FSDataset interfaces and classes currently reside in the datanode package. It
is not very easy to tell which are the FSDataset interfaces, which are the
FSDataset implementation and which other datanode classes. It is easy to
directly use FSDataset implementations by mistakes.
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