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I applied via Approached by Company and was interviewed in Nov 2024. There was 1 interview round.
I applied via Approached by Company and was interviewed in May 2024. There was 1 interview round.
Spark is a distributed computing framework that provides an interface for programming entire clusters with implicit data parallelism and fault tolerance.
Spark is built around the concept of Resilient Distributed Datasets (RDDs) which are immutable distributed collections of objects.
It supports various programming languages like Java, Scala, Python, and R.
Spark provides high-level APIs like Spark SQL for structured data...
Optimizing Spark jobs involves tuning configurations, partitioning data, caching, and using efficient transformations.
Tune Spark configurations for memory, cores, and parallelism
Partition data to distribute workload evenly
Cache intermediate results to avoid recomputation
Use efficient transformations like map, filter, and reduce
Avoid shuffling data unnecessarily
SQL query to find the second highest salary of employees in each department
Use a subquery to rank the salaries within each department
Filter the results to only include the second highest salary for each department
Join the result with the employee table to get additional information if needed
SQL query to find users who purchased 3 consecutive months in a year
Use a self join on the table to compare purchase months for each user
Group by user and year, then filter for counts of 3 consecutive months
Example: SELECT user_id FROM purchases p1 JOIN purchases p2 ON p1.user_id = p2.user_id WHERE p1.month = p2.month - 1 AND p2.month = p1.month + 1 GROUP BY p1.user_id, YEAR(p1.purchase_date) HAVING COUNT(DISTINCT MONT
Kafka is used as a message broker to ingest data into Spark Streaming for real-time processing.
Kafka acts as a buffer between data producers and Spark Streaming to handle high throughput of data
Spark Streaming can consume data from Kafka topics in micro-batches for real-time processing
Kafka provides fault-tolerance and scalability for streaming data processing in Spark
I applied via Referral and was interviewed before Jan 2021. There was 1 interview round.
I applied via Campus Placement and was interviewed before Feb 2021. There were 3 interview rounds.
Aptitude round consists Logical reasoning, General Aptitude, Grammar related questions etc. All are moderate level questions.
OOPs is a programming paradigm that uses objects to represent real-world entities. Java is an OOPs language.
OOPs stands for Object-Oriented Programming System
Java is a class-based OOPs language
Encapsulation, Inheritance, Polymorphism, and Abstraction are the four pillars of OOPs
Objects have state and behavior
Java supports interfaces, which allow for multiple inheritance
Example: A car can be represented as an object wit...
Java solves machine dependency by using bytecode and virtual machine.
Java code is compiled into bytecode which is platform-independent
The bytecode is executed by the Java Virtual Machine (JVM) which is platform-specific
JVM translates bytecode into machine code for the specific platform
This allows Java code to run on any platform with a JVM installed
Example: A Java program compiled on Windows can run on Linux or Mac as
I applied via Campus Placement and was interviewed before May 2021. There were 2 interview rounds.
Numerical ability and logical reasoning followed by some coding mcqs
Printing 1 to 100 without for loop
Use recursion to print numbers from 1 to 99
Print 100 outside the recursion
Use a base case to stop recursion at 100
I applied via Campus Placement and was interviewed before Jun 2021. There were 2 interview rounds.
Simple aptitude test
I applied via Company Website and was interviewed before Jul 2021. There were 2 interview rounds.
Attended the codevita competition in final year of college.
I applied via Campus Placement and was interviewed before Aug 2021. There were 2 interview rounds.
It was a basic aptitude test.
I applied via Campus Placement and was interviewed before Jun 2021. There were 2 interview rounds.
I applied via Campus Placement and was interviewed before May 2021. There were 2 interview rounds.
- basic programming on C
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