Catchup and backfill behavior in Apache Airflow - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to disable catchup in an Airflow DAG.

Apache Airflow

dag = DAG('example_dag', catchup=[1])

Drag options to blanks, or click blank then click option'

ATrue

B'False'

CFalse

Dnone

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'False' as a string instead of the boolean False.

Setting catchup=False disables the catchup behavior in Airflow DAGs.

2fill in blank

medium

Complete the code to set the start date for an Airflow DAG to January 1, 2023.

Apache Airflow

dag = DAG('example_dag', start_date=datetime([1]))

Drag options to blanks, or click blank then click option'

A2023, 1, 1

B2023, 12, 31

C2024, 1, 1

D2022, 1, 1

Attempts:

3 left

💡 Hint

Common Mistakes

Using the wrong year or month values.

The start_date defines when the DAG begins scheduling. January 1, 2023 is datetime(2023, 1, 1).

3fill in blank

hard

Fix the error in the DAG definition to enable backfill for missed runs.

Apache Airflow

dag = DAG('example_dag', catchup=[1])

Drag options to blanks, or click blank then click option'

AFalse

BTrue

CNone

D'True'

Attempts:

3 left

💡 Hint

Common Mistakes

Using string 'True' instead of boolean True.

Backfill runs missed DAG runs. Setting catchup=True enables backfill.

4fill in blank

hard

Fill both blanks to create a DAG that starts on March 1, 2023 and disables catchup.

Apache Airflow

dag = DAG('example_dag', start_date=datetime([1]), catchup=[2])

Drag options to blanks, or click blank then click option'

A2023, 3, 1

BFalse

CTrue

D2023, 1, 1

Attempts:

3 left

💡 Hint

Common Mistakes

Mixing up the date or using catchup=True by mistake.

The DAG starts on March 1, 2023 with datetime(2023, 3, 1) and catchup is disabled by setting catchup=False.

5fill in blank

hard

Fill all three blanks to define a DAG with start date April 10, 2023, catchup enabled, and schedule interval daily.

Apache Airflow

dag = DAG('example_dag', start_date=datetime([1]), catchup=[2], schedule_interval=[3])

Drag options to blanks, or click blank then click option'

A2023, 4, 10

BTrue

C'@daily'

DFalse

Attempts:

3 left

💡 Hint

Common Mistakes

Using catchup=False when backfill is needed.

Wrong schedule interval string.

The DAG starts on April 10, 2023, catchup is enabled with True, and the schedule interval is daily using '@daily'.