@Override
    public void postDelete(final ObserverContext<? extends RegionCoprocessorEnvironment> c,
      final Delete delete, final WALEdit edit, final Durability durability) throws IOException {
      nDelete++;
    }
Use a coprocessor to count puts and deletes. as KVs would be replicated back with the same
timestamp there is otherwise no way to count them.
hbase-server/src/test/java/org/apache/hadoop/hbase/replication/TestMasterReplication.java