Revert "HADOOP-16598. Backport "HADOOP-16558 [COMMON+HDFS] use protobuf-maven-plugin to generate protobuf classes" to all active branches" Revert. Wrong patch applied. Needs jdk7 consideration.
This reverts commit 4df0a46ed273f0b4c318320837420940fdf9dc1d.
HADOOP-16598. Backport "HADOOP-16558 [COMMON+HDFS] use protobuf-maven-plugin to generate protobuf classes" to all active branches Reapply but with right patch this time.