BigData / Apache Airflow Interview Questions

What are Airflow Plugins?

Plugins are a way to extend Airflow with custom operators, hooks, sensors, macros, UI views, and Flask blueprints without forking the core codebase. You place a Python module in the plugins folder (configured as plugins_folder) and Airflow automatically discovers it at startup.

# plugins/my_plugin.py
from airflow.plugins_manager import AirflowPlugin
from my_operators import MyCustomOperator

class MyPlugin(AirflowPlugin):
    name = 'my_plugin'
    operators = [MyCustomOperator]

In modern Airflow 2.x, many extensions are better distributed as provider packages rather than plugins for easier versioning and reuse.

Take quiz

Where should plugin Python modules be placed for Airflow to auto-discover them? The dags/ folder

✗ Try again if not.

The plugins/ folder (configured as plugins_folder)

✓ Correct! Well done.

The config/ folder

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