Hadoop HDFS Change Log for HDFS-4685 HDFS-4685 (Unreleased) INCOMPATIBLE CHANGES NEW FEATURES IMPROVEMENTS HADOOP-10185. FileSystem API for ACLs. (cnauroth) HADOOP-10186. Remove AclReadFlag and AclWriteFlag in FileSystem API. (Haohui Mai via cnauroth) HDFS-5596. Implement RPC stubs. (Haohui Mai via cnauroth) HDFS-5685. Implement ACL as a INode feature. (Haohui Mai via cnauroth) HDFS-5618. NameNode: persist ACLs in fsimage. (Haohui Mai via cnauroth) HDFS-5619. NameNode: record ACL modifications to edit log. (Haohui Mai via cnauroth) HADOOP-10187. FsShell CLI: add getfacl and setfacl with minimal support for getting and setting ACLs. (Vinay via cnauroth) OPTIMIZATIONS BUG FIXES