@Override
    public void run() {
      if (operationLog != null) {
        LOG.info("Closing operation log {}", operationLog);
        operationLog.close();
        OperationLogManager.closeOperation(operation);
      }
    }
Implemented by subclass of Operation class to execute specific behaviors.
@throws HiveSQLException
service/src/java/org/apache/hive/service/cli/operation/Operation.java