HADOOP-9845. Update protobuf to 2.5 from 2.4.x. (tucu)

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1513281 13f79535-47bb-0310-9956-ffa450edef68
HADOOP-9848. Create a MiniKDC for use with security testing. (ywskycn via tucu)

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1513308 13f79535-47bb-0310-9956-ffa450edef68
MAPREDUCE-5454. TestDFSIO fails intermittently on JDK7 (Karthik Kambatla via Sandy Ryza)

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1513368 13f79535-47bb-0310-9956-ffa450edef68
HADOOP-9848 Addendum fixing OK_JAVADOC_WARNINGS in test-patch

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1513527 13f79535-47bb-0310-9956-ffa450edef68
HADOOP-9740. Fix FsShell '-text' command to be able to read Avro files stored in HDFS.  Contributed by Allan Yan.

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1513684 13f79535-47bb-0310-9956-ffa450edef68
HADOOP-9446. Support Kerberos SPNEGO for IBM JDK. (Yu Gao via llu)

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1513687 13f79535-47bb-0310-9956-ffa450edef68
HDFS-5091. Support for spnego keytab separate from the JournalNode keytab for secure HA. Contributed by Jing Zhao.

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1513700 13f79535-47bb-0310-9956-ffa450edef68
YARN-1060. Two tests in TestFairScheduler are missing @Test annotation (Niranjan Singh via Sandy Ryza)

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1513724 13f79535-47bb-0310-9956-ffa450edef68
YARN-337. RM handles killed application tracking URL poorly. Contributed by Jason Lowe


git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1513888 13f79535-47bb-0310-9956-ffa450edef68
HADOOP 9871. Fix intermittent findbugs warnings in DefaultMetricsSystem. (Junping Du via llu)

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1514024 13f79535-47bb-0310-9956-ffa450edef68
HADOOP-9872. Improve protoc version handling and detection. (tucu)

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1514068 13f79535-47bb-0310-9956-ffa450edef68
HADOOP-9652.  RawLocalFs#getFileLinkStatus does not fill in the link owner and mode.  (Andrew Wang via Colin Patrick McCabe)

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1514088 13f79535-47bb-0310-9956-ffa450edef68
HADOOP-9381. Document dfs cp -f option. Contributed by Keegan Witt and Suresh Srinivas.

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1514089 13f79535-47bb-0310-9956-ffa450edef68
HDFS-4816. transitionToActive blocks if the SBN is doing checkpoint image transfer. (Andrew Wang)

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1514095 13f79535-47bb-0310-9956-ffa450edef68
HDFS-5051. nn fails to download checkpointed image from snn in some setups. Contributed by Vinay and Suresh Srinivas.

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1514110 13f79535-47bb-0310-9956-ffa450edef68
HDFS-5068. Convert NNThroughputBenchmark to a Tool to allow generic options. Contributed by Konstantin Shvachko.

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1514114 13f79535-47bb-0310-9956-ffa450edef68
HDFS-5079. Cleaning up NNHAStatusHeartbeat.State from DatanodeProtocolProtos. Contributed by Tao Luo.

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1514118 13f79535-47bb-0310-9956-ffa450edef68
YARN-1056. Remove dual use of string 'resourcemanager' in yarn.resourcemanager.connect.{max.wait.secs|retry_interval.secs}. Contributed by Karthik Kambatla.

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1514135 13f79535-47bb-0310-9956-ffa450edef68
HADOOP-9875.  TestDoAsEffectiveUser can fail on JDK 7.  (Aaron T. Myers via Colin Patrick McCabe)

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1514147 13f79535-47bb-0310-9956-ffa450edef68
HDFS-4898. BlockPlacementPolicyWithNodeGroup.chooseRemoteRack() fails to properly fallback to local rack.


git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1514156 13f79535-47bb-0310-9956-ffa450edef68