Essential Interview Questions for ๐๐ฎ๐๐ฎ ๐๐ป๐ด๐ถ๐ป๐ฒ๐ฒ๐ฟ
๐๐ฝ๐ฎ๐ฐ๐ต๐ฒ ๐ฆ๐ฝ๐ฎ๐ฟ๐ธ
- How would you handle skewed data in a Spark job to prevent performance issues?
- What is the difference between the Spark Session and Spark Context? When should each be used?
- How do you handle backpressure in Spark Streaming applications to manage load effectively?
๐๐ฝ๐ฎ๐ฐ๐ต๐ฒ ๐๐ฎ๐ณ๐ธ๐ฎ
- How do you handle exactly-once semantics in Kafka Streams, and what are the typical challenges?
- What is the role of ZooKeeper in Kafka, and what are the implications of moving to KRaft?
- How do you handle data retention and deletion policies in Kafka for time-based and size-based criteria?
๐๐ฝ๐ฎ๐ฐ๐ต๐ฒ ๐๐ถ๐ฟ๐ณ๐น๐ผ๐
- What is an Airflow XCom, and how would you use it to enable data sharing between tasks?
- How can you set up task-level retries and backoff strategies in Airflow?
- How do you use the Airflow REST API to trigger DAGs or monitor their status externally?
๐๐ฎ๐๐ฎ ๐ช๐ฎ๐ฟ๐ฒ๐ต๐ผ๐๐๐ถ๐ป๐ด
- How do you optimize join operations in a data warehouse to improve query performance?
- What is a slowly changing dimension (SCD), and what are different ways to implement it in a data warehouse?
- How do surrogate keys benefit data warehouse design over natural keys?
๐๐/๐๐
- What are blue-green deployments, and how would you use them for ETL jobs?
- How do you implement rollback mechanisms in CI/CD pipelines for data integration processes?
- What strategies do you use to handle schema evolution in data pipelines as part of CI/CD?
๐ฆ๐ค๐
- How would you write a query to calculate a cumulative sum or running total within a specific partition in SQL?
- How do window functions differ from aggregate functions, and when would you use them?
- How do you identify and remove duplicate records in SQL without using temporary tables?
๐ฃ๐๐๐ต๐ผ๐ป
- How do you manage memory efficiently when processing large files in Python?
- What are Python decorators, and how would you use them to optimize reusable code in ETL processes?
- How do you use Pythonโs built-in logging module to capture detailed error and audit logs?
๐๐๐๐ฟ๐ฒ ๐๐ฎ๐๐ฎ๐ฏ๐ฟ๐ถ๐ฐ๐ธ๐
- How do you configure cluster autoscaling in Databricks, and when should it be used?
- How do you implement data versioning in Delta Lake tables within Databricks?
- How would you monitor and optimize Databricks job performance metrics?
๐๐๐๐ฟ๐ฒ ๐๐ฎ๐๐ฎ ๐๐ฎ๐ฐ๐๐ผ๐ฟ๐
- What are tumbling window triggers in Azure Data Factory, and how do you configure them?
- How would you enable managed identity-based authentication for linked services in ADF?
- How do you create custom activity logs in ADF for monitoring data pipeline execution?
Data Engineering Interview Preparation Resources: ๐ https://topmate.io/analyst/910180
All the best ๐๐
๐๐ฝ๐ฎ๐ฐ๐ต๐ฒ ๐ฆ๐ฝ๐ฎ๐ฟ๐ธ
- How would you handle skewed data in a Spark job to prevent performance issues?
- What is the difference between the Spark Session and Spark Context? When should each be used?
- How do you handle backpressure in Spark Streaming applications to manage load effectively?
๐๐ฝ๐ฎ๐ฐ๐ต๐ฒ ๐๐ฎ๐ณ๐ธ๐ฎ
- How do you handle exactly-once semantics in Kafka Streams, and what are the typical challenges?
- What is the role of ZooKeeper in Kafka, and what are the implications of moving to KRaft?
- How do you handle data retention and deletion policies in Kafka for time-based and size-based criteria?
๐๐ฝ๐ฎ๐ฐ๐ต๐ฒ ๐๐ถ๐ฟ๐ณ๐น๐ผ๐
- What is an Airflow XCom, and how would you use it to enable data sharing between tasks?
- How can you set up task-level retries and backoff strategies in Airflow?
- How do you use the Airflow REST API to trigger DAGs or monitor their status externally?
๐๐ฎ๐๐ฎ ๐ช๐ฎ๐ฟ๐ฒ๐ต๐ผ๐๐๐ถ๐ป๐ด
- How do you optimize join operations in a data warehouse to improve query performance?
- What is a slowly changing dimension (SCD), and what are different ways to implement it in a data warehouse?
- How do surrogate keys benefit data warehouse design over natural keys?
๐๐/๐๐
- What are blue-green deployments, and how would you use them for ETL jobs?
- How do you implement rollback mechanisms in CI/CD pipelines for data integration processes?
- What strategies do you use to handle schema evolution in data pipelines as part of CI/CD?
๐ฆ๐ค๐
- How would you write a query to calculate a cumulative sum or running total within a specific partition in SQL?
- How do window functions differ from aggregate functions, and when would you use them?
- How do you identify and remove duplicate records in SQL without using temporary tables?
๐ฃ๐๐๐ต๐ผ๐ป
- How do you manage memory efficiently when processing large files in Python?
- What are Python decorators, and how would you use them to optimize reusable code in ETL processes?
- How do you use Pythonโs built-in logging module to capture detailed error and audit logs?
๐๐๐๐ฟ๐ฒ ๐๐ฎ๐๐ฎ๐ฏ๐ฟ๐ถ๐ฐ๐ธ๐
- How do you configure cluster autoscaling in Databricks, and when should it be used?
- How do you implement data versioning in Delta Lake tables within Databricks?
- How would you monitor and optimize Databricks job performance metrics?
๐๐๐๐ฟ๐ฒ ๐๐ฎ๐๐ฎ ๐๐ฎ๐ฐ๐๐ผ๐ฟ๐
- What are tumbling window triggers in Azure Data Factory, and how do you configure them?
- How would you enable managed identity-based authentication for linked services in ADF?
- How do you create custom activity logs in ADF for monitoring data pipeline execution?
Data Engineering Interview Preparation Resources: ๐ https://topmate.io/analyst/910180
All the best ๐๐