HADOOP-8857. hadoop.http.authentication.signature.secret.file docs should not state that secret is randomly generated. (tucu)

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-0.23@1441567 13f79535-47bb-0310-9956-ffa450edef68
 HADOOP-9231. Parametrize staging URL for the uniformity of distributionManagement. (Konstantin Boudnik via tgraves)

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-0.23@1441569 13f79535-47bb-0310-9956-ffa450edef68
HADOOP-9124. SortedMapWritable violates contract of Map interface for equals() and hashCode(). (Surenkumar Nihalani via tgraves)

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-0.23@1441575 13f79535-47bb-0310-9956-ffa450edef68
merge -r 1213536:1213537 Merging from trunk to branch-0.23 to fix HDFS-1765

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-0.23@1441577 13f79535-47bb-0310-9956-ffa450edef68
MAPREDUCE-4969. TestKeyValueTextInputFormat test fails with Open JDK 7. (Arpit Agarwal via tgraves)

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-0.23@1441585 13f79535-47bb-0310-9956-ffa450edef68
MAPREDUCE-4949. Enable multiple pi jobs to run in parallel. (sandyr via tucu)

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-0.23@1441589 13f79535-47bb-0310-9956-ffa450edef68
Merge branch 'branch-0.23' of github.com:griddynamics/yhadoop-common into branch-0.23-gd