Executors are the mechanism by which task instances get run.
Airflow has support for various executors. Current used is determined by the
executor option in the
section of the configuration file. This option should contain the name executor e.g.
if it is a core executor. If it is to load your own executor, then you should specify the
full path to the module e.g.
For more information on setting the configuration, see Setting Configuration Options.