def get_default_executor():
    """"""
    global DEFAULT_EXECUTOR

    if DEFAULT_EXECUTOR is not None:
        return DEFAULT_EXECUTOR

    executor_name = configuration.conf.get('core', 'EXECUTOR')

    DEFAULT_EXECUTOR = _get_executor(executor_name)

    log = LoggingMixin().log
    log.info("Using executor %s", executor_name)

    return DEFAULT_EXECUTOR