Real questions from top companies · easy
What are the different delivery semantics in Kafka (at least-once, at-most-once, exactly-once)?
What are the different modes in which you can submit Spark jobs? Explain each.
What are the performance considerations when using Auto Loader?
What are the steps to connect to Salesforce?
What are the steps to debug a failed workflow in Databricks?
What are the steps to execute a Python file with PySpark code on an EC2 environment?
What are the trade-offs between using Glue Catalog vs. Hive Metastore for metadata management?
What are transient clusters in EMR, and when would you use them?
What configurations are needed to pass parameters to a Databricks notebook?
What file format does Delta Lake use, and why is it beneficial?
What happens if the vacuum command is not run periodically?
What happens when an executor fails during a task execution?
What is Avro file format & what is its significance in delta tables?
What is Databricks Auto Loader, and how does it handle new files?
What is YARN, and how does it manage resources in a Hadoop ecosystem?
What is YARN?
What is a DAG in Apache Airflow, and how is it used for scheduling workflows?
What is one disadvantage of using Scala for data engineering tasks?
What is the difference between external and internal tables in Hive?
What is the difference between head() and take() in PySpark?
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