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Interview questions · hard
How do you reduce shuffle operations in Spark?
How does Kafka ensure message durability and reliability?
How does Spark execute a job? Explain the DAG and stages.
How does lazy evaluation work in Spark?
Implement a Kafka consumer that writes streaming data into a database.
Implement a PySpark job to read CSV data, perform joins, and store output as partitioned Parquet.
Describe your monitoring strategy for this pipeline.
Design a scalable system for processing real-time sales data from multiple stores, storing it for analytics, and generating reports.
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