@Test
  public void testCheckAndMutateNormalTable() throws IOException {
    conn.getTable(TableName.valueOf(name.getMethodName()))
      .checkAndMutate(Bytes.toBytes(0), Bytes.toBytes("cf")).qualifier(Bytes.toBytes("cq"))
      .ifEquals(Bytes.toBytes("v"))
      .thenMutate(new RowMutations(Bytes.toBytes(0)).add((Mutation) new Delete(Bytes.toBytes(0))))
      .join();
    verify(stub, times(1)).multi(assertPriority(NORMAL_QOS), any(ClientProtos.MultiRequest.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