Real questions from top companies · easy
Compare ORC and Parquet
Compare Spark SQL vs. Hive Performance.
Compare Spark and MapReduce for iterative workloads
Concatenate Columns in PySpark
Controlling mappers in MapReduce
Create a DataFrame with default column types
Data locality in Hadoop - explain
Databricks Cluster Management - standalone vs YARN mode
Databricks Job Cluster and SQL Endpoint - discuss Photon
Databricks notebooks vs. Fabric notebooks - differences
Databricks vs. PySpark?
Define Airflow and explain it as a workflow orchestration tool.
Defining Tasks in DAG
Delta vs Parquet - explain
Deploying DAGs
Describe a custom EMR cluster configuration for Spark-based ETL with minimal cost.
Describe building custom JARs for Spark jobs
Describe how to pass data between tasks in Airflow using XComs.
Describe the cluster configuration used in your project, including memory allocation, number of nodes, and executor/driver settings.
Describe the role of a workflow orchestrator like Airflow in a data pipeline.
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