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Home/Questions/Spark/Big Data/How do you handle failures in Airflow tasks, and what retry strategies can you use?

How do you handle failures in Airflow tasks, and what retry strategies can you use?

Spark/Big Dataeasy0.5 min read

**Situation**: Faced competing demands—multiple pipelines, stakeholders, deadlines. **Task**: Deliver impact while maintaining quality and preventing burnout. **Action**: (1) Prioritized by business impact and SLA risk. (2) Used ROI (value/time); WIP limits; timeboxing. (3)...

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Frequency
Low
Asked at 1 company
Category
452
questions in Spark/Big Data
Difficulty Split
88E|81M|283H
in this category
Total Bank
1,863
across 7 categories
Asked at these companies
Citi
Key Concepts Tested
airflowpython

Why This Question Matters

This easy-level Spark/Big Data question appears frequently in data engineering interviews at companies like Citi. While less common, it tests deeper understanding that distinguishes strong candidates. Mastering the underlying concepts (airflow, python) will help you answer variations of this question confidently.

How to Approach This

Start by clearly defining the core concept being asked about. Interviewers want to see that you understand the fundamentals before diving into implementation details. Structure your answer with a definition, then explain the practical application with a concise example.

Expert Answer
96 words

Situation: Faced competing demands—multiple pipelines, stakeholders, deadlines. Task: Deliver impact while maintaining quality and preventing burnout. Action: (1) Prioritized by business impact and SLA risk. (2) Used ROI (value/time); WIP limits; timeboxing. (3) Communicated trade-offs—'Adding X pushes Y by N days.' (4) Maintained backlog with tech-debt capacity. Result: Shipped on time; zero incidents; stakeholder alignment on deferrals. Detail: Airflow task failures: retries with retry_exponential_backoff; on_failure_callback; trigger_rule (all_done, one_failed); retry_delay. Example: task=PythonOperator(..., retries=3, retry_delay=timedelta(minutes=5)). Best practice: make tasks idempotent; set appropriate retries; use callbacks for alerts; consider retry with different strategies (e.g., reset state); document failure handling.

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