Real questions from top companies · hard
How do Spark transformations differ from actions? Provide examples of each.
How do caching strategies impact memory management in Databricks?
How do you access Delta Logs?
How do you configure autoscaling for a Dataproc cluster?
How do you configure retention periods for Delta tables?
How do you connect to Blob Storage in Databricks?
How do you convert an array column to multiple columns in PySpark?
How do you decide the number of partitions for repartitioning data in Spark?
How do you ensure data quality and consistency across different stages of a data pipeline?
How do you ensure fault tolerance when processing large datasets in EMR?
How do you give permission to a notebook to other users in Databricks?
How do you help stakeholders query Delta Lake tables? What tools and approaches?
How do you identify skewed partitions in a dataset?
How do you implement incremental updates in a data lake using AWS services and Spark?
How do you implement row and column-level security in Databricks?
How do you initiate a DAG in Airflow?
How do you manage dependencies between tasks in a Cloud Composer DAG?
How do you manage memory allocation in Spark?
How do you manage schema changes in PySpark when processing data over time?
How do you monitor Spark jobs?
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