HADOOP-11356. Removed deprecated o.a.h.fs.permission.AccessControlException. Contributed by Li Lu.
HDFS-7478. Move org.apache.hadoop.hdfs.server.namenode.NNConf to FSNamesystem. Contributed by Li Lu.
HDFS-7472. Fix typo in message of ReplicaNotFoundException. Contributed by Masatake Iwasaki.
HADOOP-11355. When accessing data in HDFS and the key has been deleted, a Null Pointer Exception is shown. Contributed by Arun Suresh.
YARN-2461. Fix PROCFS_USE_SMAPS_BASED_RSS_ENABLED property in YarnConfiguration. (rchiang via rkanter)
YARN-2056. Disable preemption at Queue level. Contributed by Eric Payne
HDFS-7474. Avoid resolving path in FSPermissionChecker. Contributed by Jing Zhao.
YARN-2869. CapacityScheduler should trim sub queue names when parse configuration. Contributed by Wangda Tan
HADOOP-11343. Overflow is not properly handled in caclulating final iv for AES CTR. Contributed by Jerry Chen.
HDFS-7459. Consolidate cache-related implementation in FSNamesystem into a single class. Contributed by Haohui Mai.
HDFS-7476. Consolidate ACL-related operations to a single class. Contributed by Haohui Mai.
HADOOP-11313. Adding a document about NativeLibraryChecker. Contributed by Tsuyoshi OZAWA.
YARN-2927. [YARN-1492] InMemorySCMStore properties are inconsistent. (Ray Chiang via kasha)
MAPREDUCE-6177. Minor typo in the EncryptedShuffle document about ssl-client.xml. Contributed by Yangping Wu. (harsh)
HADOOP-10530 Make hadoop build on Java7+ only (stevel)
YARN-2683 registry configuration options, with some extra text in yarn-default.xml too
Some punctuation fixes, XML Configuration examples were misinterpreted using indentation only, expanded on ZK paths.

Biggest non-grammatical change is adding in a reference to
the $hadoop.registry.zk.root when listing children paths such
as /services and /users. IMO, more clear that everything is beneath
that root path in ZK.
YARN-2683 patch -003; updated docs and moved configs to core-default.xml
YARN-2683 patch -003 : emphasise that core-site.xml is the place to override these values
YARN-2683 fix duplicate acl tag