@Test
  public void testDeleteNormalTable() {
    conn.getTable(TableName.valueOf(name.getMethodName())).delete(new Delete(Bytes.toBytes(0)))
      .join();
    verify(stub, times(1)).mutate(assertPriority(NORMAL_QOS), any(MutateRequest.class), any());
  }
Confirm that we will set the priority in {@link HBaseRpcController} for several table operations.
hbase-client/src/test/java/org/apache/hadoop/hbase/client/TestAsyncTableRpcPriority.java