@Test
  public void testGetVariableValue() throws Exception {
    CLIServiceClient serviceClient = miniHS2.getServiceClient();
    SessionHandle sessHandle = serviceClient.openSession("foo", "bar");
    OperationHandle opHandle = serviceClient.executeStatement(sessHandle, "set system:os.name", confOverlay);
    RowSet rowSet = serviceClient.fetchResults(opHandle);
    assertEquals(1, rowSet.numRows());
    serviceClient.closeSession(sessHandle);
  }
Open a new session and execute a set command
@throws Exception
itests/hive-unit/src/test/java/org/apache/hive/jdbc/miniHS2/TestHiveServer2.java