This reverts commit 4356e8a5ef0ac6d11a34704b80ef360a710e623a. Conflicts: hadoop-common-project/hadoop-common/CHANGES.txt hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/metrics2/impl/MetricsSourceAdapter.java
This reverts commit 4356e8a5ef0ac6d11a34704b80ef360a710e623a. Conflicts: hadoop-common-project/hadoop-common/CHANGES.txt hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/metrics2/impl/MetricsSourceAdapter.java