Hadoop-common failed to generate JDiff. We need to fix that.
Run JDiff on trunk for Hadoop-Common and analyze results
jdiff fails with error 'duplicate comment id' about MetricsSystem.register_changed
Add jdiff support to MapReduce
Point JDiff base version for HDFS from 2.6.0 to 2.7.2
mvn site commands fails due to MetricsSystemImpl changes