private void assertOperationFinished(CLIServiceClient serviceClient, OperationHandle opHandle) 
      throws HiveSQLException, InterruptedException {
    assertOperationStatus(serviceClient, opHandle, OperationState.FINISHED);
  }
Test overlapping async queries in one session.
Since TxnManager is shared in the session this can cause all kind of trouble.
@throws Exception ex
itests/hive-unit/src/test/java/org/apache/hive/jdbc/miniHS2/TestHiveServer2Acid.java