Real questions from top companies · hard
Spark Optimizations: skewed joins, broadcast joins, Catalyst Optimizer, repartition vs coalesce
Spark Session Command - how to create
Spark Streaming - streaming data handling and file mounting techniques
Spark Submit - command syntax
Spark Tungsten & Catalyst Optimizer
Steps to link a Databricks notebook to an ADF pipeline
Trade-offs between batch processing (Spark) vs. real-time streams (Kafka)
Usage of UDFs?
Walk through how you would debug the data ingestion process to identify slow stages.
Walkthrough Spark's architecture, focusing on driver, executors, and DAGs
What are Spark optimizations, and can you explain them?
What are the challenges of implementing real-time analytics using Spark Streaming?
What are the key properties of Delta Lake that differentiate it from traditional data lakes?
What happens if the checkpoint location is accidentally deleted?
What insights can you gather from the DAG visualization in Spark UI?
What is Predicate Pushdown and AQE with Example
What is a serializer in Spark?
What is data shuffling in Spark, and how do you minimize its impact on job performance?
What is the difference between Lazy Evaluation and Eager Execution in PySpark?
What is the difference between MapReduce and Spark?
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