@Test
  public void testDelete() {
    conn.getTable(TableName.valueOf(name.getMethodName()))
      .delete(new Delete(Bytes.toBytes(0)).setPriority(13)).join();
    verify(stub, times(1)).mutate(assertPriority(13), 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