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Addendum fix in container executor. Contributed by Wilfred Spiegelenburg.

Additional check when unpacking archives. Contributed by Jason Lowe and Akira Ajisaka.

Skip the proxy user check if the ugi has not been initialized. Contributed by Daryn Sharp

(cherry picked from commit 73e9120ad79c73703de21e0084591861813f3279)

HDFS-13486. Backport HDFS-11817 (A faulty node can cause a lease leak and NPE on accessing data) to branch-2.7. Contributed by Kihwal Lee.

Update index.md.vm to reflect summary of changes in release 2.7.6

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    /hadoop-project/src/site/markdown/index.md.vm
Set the release date for 2.7.6

HADOOP-14970. MiniHadoopClusterManager doesn't respect lack of format option. Contributed by Erik Krogen

(cherry picked from commit 1a407bc9906306801690bc75ff0f0456f8f265fd)

Preparing for 2.7.7 development

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    /hadoop-common-project/hadoop-kms/pom.xml
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    /hadoop-common-project/hadoop-nfs/pom.xml
  1. … 55 more files in changeset.
HDFS-12299. Race Between update pipeline and DN Re-Registration. Contributed by Brahma Reddy Battula.

(cherry picked from commit 5a83ffa396089972e23c533eca33c9cba231c45a)

Revert "HDFS-12299. Race Between update pipeline and DN Re-Registration. Contributed by Brahma Reddy Battula."

This reverts commit 94bb6fa9dfa0877d68b388fa85309623ce71b21d.

HADOOP-12862. LDAP Group Mapping over SSL can not specify trust store. Contributed by Wei-Chiu Chuang and Konstantin Shvachko.

(cherry picked from commit 2216bde322961c0fe33b5822510880a65d5c45fd)

HADOOP-15345. Backport HADOOP-12185 to branch-2.7: NetworkTopology is not efficient adding/getting/removing nodes. Contributed by He Xiaoqiao.

HDFS-13195. DataNode conf page cannot display the current value after reconfig. Contributed by maobaolong.

(cherry picked from commit d2c3a56ad8cd331040d737d0da23d1cd108987a4)

HDFS-12884. BlockUnderConstructionFeature.truncateBlock should be of type BlockInfo. Contributed by chencan.

(cherry picked from commit 8d898ab25f1c2032a07c9bbd96ba3d0c4eb5be87)

Revert "HADOOP-13119. Add ability to secure log servlet using proxy users. Contribute by Yuanbo Liu."

This reverts commit b13492a0ab6e92517528d2f622591d4682071ead.

HDFS-12156. TestFSImage fails without -Pnative

(cherry picked from commit 319defafc105c0d0b69b83828b578d9c453036f5)

(cherry picked from commit b0c80f1c814827abf95316dc9c23701f8ef09d9a)

(cherry picked from commit 9699bc2e11663469ed1425fb42d09dba3fbeb0d6)

Conflicts:

hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/namenode/TestFSImage.java

HADOOP-15283. Upgrade from findbugs 3.0.1 to spotbugs 3.1.2 in branch-2 to fix docker image build.

(cherry picked from commit 8ad3ec6aabd265cae01242100729e3d02d794256)

HADOOP-15279. increase maven heap size recommendations

Signed-off-by: Jason Lowe <jlowe@apache.org>

Signed-off-by: Chris Douglas <cdouglas@apache.org>

(cherry picked from commit d4cc50f62279dc4d607cd05c16de480a76f05880)

(cherry picked from commit dbd69cb2ce2a060e36280b222cac05fc05e065d1)

HDFS-11187. Optimize disk access for last partial chunk checksum of Finalized replica. Contributed by Gabor Bota, Wei-Chiu Chuang.

HADOOP-15206. BZip2 drops and duplicates records when input split size is small. Contributed by Aki Tanaka

(cherry picked from commit 0898ff42e9e5c53f2fce7ccdeb4e1cd7d0f123b3)

HDFS-13112. Token expiration edits may cause log corruption or deadlock. Contributed by Daryn Sharp.

(cherry picked from commit 47473952e56b0380147d42f4110ad03c2276c961)

MAPREDUCE-7052. TestFixedLengthInputFormat#testFormatCompressedIn is flaky. Contributed by Peter Bacsko

(cherry picked from commit a53d62ab26e170a0338f93e228718da52e9196e4)

xattr api cleanup

MAPREDUCE-7048. Uber AM can crash due to unknown task in statusUpdate. Contr ibuted by Peter Bacsko

HDFS-10453. Update CHANGES.txt.

HDFS-10453. ReplicationMonitor thread could stuck for long time due to the race between replication and delete of same file in a large cluster.. Contributed by He Xiaoqiao.

HDFS-13120. Snapshot diff could be corrupted after concat. Contributed by Xiaoyu Yao.

(cherry picked from commit 8faf0b50d435039f69ea35f592856ca04d378809)

HADOOP-15212. Add independent secret manager method for logging expired tokens. Contributed by Daryn Sharp.

(cherry picked from commit 2dd960de983a30bf0d9ee957bdb09f825f9d40a3)

MAPREDUCE-7020. Task timeout in uber mode can crash AM. Contributed by Peter Bacsko