HashedIn by Deloitte Interview Questions, Process, and Tips

Q1. Design the architecture of your current project?
Add your answer
Q2. HLD of lift design
Ans. 
High Level Design (HLD) of a lift includes system architecture, components, interfaces, and interactions.
• Identify key components like motor, control panel, doors, and sensors

• Define system architecture including how components interact

• Specify interfaces for user input, floor selection, and emergency stop

• Consider safety features like overload protection and emergency brakes
Answered by AI
Add your answer

Q1. Past project experience
Add your answer
Q2. Past job nature
Add your answer

Medium level of codings.

Basic DS Algo, leetcode

Q1. Leetcode medium level question
Add your answer

Q1. Leetcoide meduim level question
Add your answer

Q1. Basic HR questions
Add your answer

Two coding problem was given

Q1. How do you handle Spark Memory management
Ans. 
Spark Memory management involves configuring memory allocation, monitoring memory usage, and optimizing performance.
• Set memory allocation parameters in Spark configuration (e.g. spark.executor.memory, spark.driver.memory)

• Monitor memory usage using Spark UI or monitoring tools like Ganglia

• Optimize performance by tuning memory allocation based on workload and cluster resources

• Use techniques like caching and persistence t
Answered by AI
Add your answer
Q2. How do you work on Spark Optimisatiomn
Ans. 
Spark optimization involves tuning configurations, partitioning data, using appropriate transformations, and caching intermediate results.
• Tune Spark configurations based on cluster resources and workload requirements

• Partition data to distribute workload evenly across nodes

• Use appropriate transformations like map, filter, and reduce to minimize data shuffling

• Cache intermediate results to avoid recomputation
Answered by AI
Add your answer