Suppose you have a DAG that ingests data from multiple databases. How would you increase task parallelism in Airflow to improve performance without overloading the system?
Spark/Big Dataeasy
4
Suppose you need to import 5 tables from an external RDBMS (like MySQL) into Hadoop HDFS. Write the Sqoop command
Spark/Big Dataeasy
5
Task Dependencies in DAG
Spark/Big Dataeasy
6
What is a DAG in Apache Airflow, and how is it used for scheduling workflows?
Spark/Big Dataeasy
7
Describe an end-to-end data pipeline project you worked on, highlighting your role and the technologies used.
System Design/Architecturehard
8
Describe how you would debug a failing ETL pipeline in production.
System Design/Architecturehard
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