Real questions from top companies · hard
After cleaning, how would you store the transformed data into Delta Lake?
Alternatives to the Medallion Architecture
Apache Spark Architecture - RDD, DAG, cluster manager, driver node, worker node
Apache Spark Fundamentals - discuss
Apache Spark Fundamentals - failures, job optimization, resource utilization
Basic Spark commands – Create RDD, Load data, Filter
Bloom Filters in Spark projects - explain use case
Cache vs. Persistent storage in Spark?
Calculating Databricks costs - explain DBU
Can Presto work with Near Real-Time Data (Streaming Data Source)?
Can you explain how streams and tasks handle data freshness in near real-time?
Challenges with Spark Jobs and Resolutions
Compare Hadoop and Spark. Which one would you choose for a real-time application, and why?
Compare Kafka Streams and Spark Structured Streaming for real-time processing
Compare Kafka and RabbitMQ for real-time message processing in a streaming platform.
Conceptualize and design a real-time streaming data pipeline end-to-end.
Databricks - platform, use cases
Define what a User-Defined Function (UDF) is and how to register it in PySpark.
Delta Lake: ACID compliance, time travel, streaming support
Describe how you would monitor ETL job performance and handle long-running tasks.
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