private static Configuration createConfigurationForSimpleRpcServer() {
    Configuration conf = HBaseConfiguration.create();
    conf.set(RpcServerFactory.CUSTOM_RPC_SERVER_IMPL_CONF_KEY, SimpleRpcServer.class.getName());
    conf.setInt(BUFFER_SIZE_KEY, 20);
    return conf;
  }
HBASE-19496 noticed that the RegionLoad/ServerLoad may be corrupted if rpc server reuses the
bytebuffer backed, so this test call the Admin#getLastMajorCompactionTimestamp() to invoke
HMaster to iterate all stored server/region loads.
hbase-server/src/test/java/org/apache/hadoop/hbase/client/TestServerLoadDurability.java