Related InterviewSolutions

• When submitting a Spark job, I notice that a few tasks are relatively taking longer time to get completed. What could be the cause of this and how to resolve this issue?
• What is a broadcast variable in Spark? What purpose does it serve? How is it different from an accumulator?
• Describe the Spark Memory model. What is the difference between Off-heap and On-heap memory?
• What is checkpointing in Spark? How does it help Spark achieve exactly-once semantics? How does Checkpointing differ from Persistence?
• What is Structured Streaming in Spark? What are the different output modes in Spark Structured Streaming?
• List some of the use cases for Graph Analytics?
• What is Graph Analytics in Spark?
• List some of the use cases of Unsupervised Learning.
• List some of the use cases of Supervised/Classification Algorithm.
• What are the different types of Machine Learning?