Interview questions
How do you store streaming data in Delta Lake and handle schema evolution?
How does Databricks create clusters for running Spark jobs?
How does Delta Lake store the transaction history in S3 buckets?
How to optimize mappers using properties in MapReduce?
How would you ensure exactly-once processing for Kafka consumers in your Spark job?
How would you handle memory management in Spark?
How would you manage the streaming data schema and handle schema evolution in Delta Lake?
How would you optimize your Spark Streaming ETL pipeline for high throughput and low latency?
Spark Executor Management: 10 workers, 100GB RAM, 25 cores - number of executors, size, OOM in Driver
Sqoop command for importing multiple tables
Suppose you need to import 5 tables from an external RDBMS (like MySQL) into Hadoop HDFS. Write the Sqoop command
What role would Kafka or similar event-driven platforms play in your architecture?
What strategies would you use to optimize Spark jobs for both performance and cost on AWS?
You are given 10 worker machines with 100 GB RAM and 25 CPU cores. How would you determine the number of executors and the size of each executor?
Design an e-commerce platform like Flipkart
How does Presto fetch data from a data catalog?
How would you design the architecture to handle high availability and scalability?
How would you ensure the system can handle millions of concurrent users?
How would you set up an alert system to monitor your ETL pipeline for failures or performance issues?
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