Bulk Operation

HDFS-7416 Consolidate append() related implementation into a single class

HDFS-7416 Consolidate truncate() related implementation in a single class

HDFS-7416 Consolidate the implementation of delete() into a single class

HDFS-7416 Consolidate encryption zone related implementation into a single class

HDFS-7416 Consolidate symlink-related implementation into a single class

HDFS-7416 Consolidate implementation of setting inode attributes into a single class

HDFS-7416 Consolidate XAttr-related implementation into a single class

HDFS-7416 Consolidate ACL-related operations to a single class

HDFS-7416 Moving verify* functions to corresponding classes

HDFS-7416 Consolidate implementation of mkdirs() into a single class

HDFS-7416 Consolidate cache-related implementation in FSNamesystem into a single class

HDFS-7416 Consolidate the implementation of GetFileInfo(), GetListings() and GetContentSummary() into a single class

HDFS-7416 Consolidate snapshot related operations in a single class

HDFS-7416 Consolidate the implementation of rename() into a single class

HDFS-7416 Consolidate implementation of concat()

HDFS-7416 Delegate permission checks to FSDirectory

HDFS-7416 Move FSNameSystem.resolvePath() to FSDirectory

HDFS-7416 Some unit tests should use NameNodeProtocols instead of FSNameSystem

HDFS-7416 Move RetryCache to NameNodeRpcServer