protected static void stopAllRegionServers(HBaseTestingUtil util) throws IOException {
    List<ServerName> rses = util.getMiniHBaseCluster().getRegionServerThreads().stream()
      .map(t -> t.getRegionServer().getServerName()).collect(Collectors.toList());
    for (ServerName rs : rses) {
      util.getMiniHBaseCluster().stopRegionServer(rs);
    }
  }
This class is only a base for other integration-level replication tests. Do not add tests here.
TestReplicationSmallTests is where tests that don't require bring machines up/down should go All
other tests should have their own classes and extend this one
hbase-server/src/test/java/org/apache/hadoop/hbase/replication/TestReplicationBase.java