HDFS-7217. Better batching of IBRs. Contributed by Kihwal Lee.
(cherry picked from commit db71bb54bcc75b71c5841b25ceb03fb0218c6d4f)
HADOOP-11175. Fix several issues of hadoop security configuration in user doc. Contributed by Yi Liu.

(cherry picked from commit 1123a06e3658f26228f1eedaed796aca8efc7bad)
(cherry picked from commit 5af4c021cc3558de0ac8610170a1eb749e0171da)
YARN-2493. Added user-APIs for using node-labels. Contributed by Wangda Tan.

(cherry picked from commit 180afa2f86f9854c536c3d4ff7476880e41ac48d)
YARN-2598 GHS should show N/A instead of null for the inaccessible information (Zhijie Shen via mayank)
HDFS-7195. Update user doc of secure mode about Datanodes don't require root or jsvc. Contributed by Chris Nauroth.

(cherry picked from commit 4e544c84e9e2cf3fb031cd8797bac4e8bcc7eca9)
HADOOP-11178. Fix findbugs exclude file. (Arun Suresh via wang)

(cherry picked from commit d7b647f0ee2c918143ff71abd9ce8b89717b2fc5)
YARN-2629. Made the distributed shell use the domain-based timeline ACLs. Contributed by Zhijie Shen.

(cherry picked from commit 1d4612f5ad9678c952b416e798dccd20c88f96ef)
HADOOP-11174. Delegation token for KMS should only be got once if it already exists. (Yi Liu via wang)

(cherry picked from commit 8d941144952a77a714cd4368cba21b01904926e9)
YARN-2544. Added admin-API objects for using node-labels. Contributed by Wangda Tan.

(cherry picked from commit 596702a02501e9cb09aabced168027189eaf02ba)
HADOOP-11184. Update Hadoop's lz4 to r123 (cmccabe)
(cherry picked from commit d8d628d1e0c42a32e2079ed430e8817996bbe4c4)
(cherry picked from commit 8addbe2b8eaf9fabbb0b6dc0dd3351a0145e0cae)
YARN-2617. Fixed ApplicationSubmissionContext to still set resource for backward compatibility. Contributed by Wangda Tan.

(cherry picked from commit e532ed8faa8db4b008a5b8d3f82b48a1b314fa6c)
YARN-2671. Fix the Jira number in the change log.

(cherry picked from commit 5b12df6587eb4f37d09c9ffc35a0ea59694df831)
MAPREDUCE-6122. TestLineRecordReader may fail due to test data files checked out of git with incorrect line endings. Contributed by Chris Nauroth.

(cherry picked from commit 684170d5efdc11bcd9967168f44a428d1a72af3c)
(cherry picked from commit 85a2b907407c7719a31c64d3747810263b3ec57d)
MAPREDUCE-6122. Fix CHANGES.txt.

(cherry picked from commit 2f0166db560b180e8d07c10ba9ad4bfaf2aa7b36)
(cherry picked from commit 61be28f501ba3de0915c165c9d43fa38463722c0)
MAPREDUCE-6123. TestCombineFileInputFormat incorrectly starts 2 MiniDFSCluster instances. Contributed by Chris Nauroth.

(cherry picked from commit 777877d079ecb025c293deac741800800e413179)
(cherry picked from commit f6278cbac50522302ee7ad3cbbe21d0aeefa76d8)
YARN-2662. TestCgroupsLCEResourcesHandler leaks file descriptors. Contributed by Chris Nauroth.

(cherry picked from commit d3afd730acfa380ab5032be5ee296c5d73744518)
(cherry picked from commit b81641a31050b6a5cf5db3af636125e0617ffd56)
YARN-2583. Modified AggregatedLogDeletionService to be able to delete rolling aggregated logs. Contributed by Xuan Gong.

(cherry picked from commit cb81bac0029fce3a9726df3523f0b692cd3375b8)