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DataGrokr Data Engineer Interview Questions and Answers
DataGrokr Data Engineer Interview Experiences
3 interviews found
Anonymous
Spark related assignment
(2 Questions)
- Q1. SQL question like select and filter related topics
- Q2. Python to sort numbers
- Ans.
Use the sorted() function in Python to sort numbers in a list.
Use the sorted() function with the list of numbers as input.
sorted() function returns a new sorted list without modifying the original list.
You can use the reverse parameter in sorted() to sort in descending order.
Example: numbers = [3, 1, 4, 1, 5, 9, 2] sorted_numbers = sorted(numbers) print(sorted_numbers)
(2 Questions)
- Q1. Explain my experience
- Ans.
I have experience working as a Data Engineer for 5 years in a tech company, where I was responsible for designing and implementing data pipelines, optimizing data storage and retrieval, and collaborating with cross-functional teams.
Designed and implemented data pipelines to extract, transform, and load data from various sources
Optimized data storage and retrieval processes to improve efficiency and performance
Collabora...
- Q2. Learning or study process
- Ans.
Continuous learning through online courses, books, and hands-on projects.
Regularly enroll in online courses related to data engineering to stay updated on new technologies and best practices.
Read books and articles on data engineering to deepen understanding of concepts and techniques.
Work on hands-on projects to apply theoretical knowledge and gain practical experience.
Participate in data engineering communities and f...
Skills evaluated in this interview
Selected
I applied via Internshala and was interviewed before May 2023. There were 2 interview rounds.
(2 Questions)
- Q1. Basics must be absolutely strong.
- Q2. Strong SQL and Python can help you crack interview.
(1 Question)
- Q1. Questions on behavioural aspects
Interview Preparation Tips
Selected
I applied via Campus Placement and was interviewed before Feb 2022. There were 4 interview rounds.
Related to python, SQL and pyspark.
(1 Question)
- Q1. Assignment approach / Python / SQL most important / Basic DSA
(1 Question)
- Q1. Normal conversation / Goals
Interview Preparation Tips
- Python
- SQL
- DSA
- Cloud
Top trending discussions
Interview questions from similar companies
(2 Questions)
- Q1. Spark and airflow related questions
- Q2. AWS services and it's related questions
(1 Question)
- Q1. NLP based question
(4 Questions)
- Q1. Components of Databricks
- Ans.
Databricks is a unified data analytics platform that includes components like Databricks Workspace, Databricks Runtime, and Databricks Delta.
Databricks Workspace: Collaborative environment for data science and engineering teams.
Databricks Runtime: Optimized Apache Spark cluster for data processing.
Databricks Delta: Unified data management system for data lakes.
- Q2. How to read a json file
- Ans.
To read a JSON file, use a programming language's built-in functions or libraries to parse the file and extract the data.
Use a programming language like Python, Java, or JavaScript to read the JSON file.
Import libraries like json in Python or json-simple in Java to parse the JSON data.
Use functions like json.load() in Python to load the JSON file and convert it into a dictionary or object.
Access the data in the JSON fi...
- Q3. Second highest salary SQL
- Ans.
To find the second highest salary in SQL, use the MAX function with a subquery or the LIMIT clause.
Use the MAX function with a subquery to find the highest salary first, then use a WHERE clause to exclude it and find the second highest salary.
Alternatively, use the LIMIT clause to select the second highest salary directly.
Make sure to handle cases where there may be ties for the highest salary.
- Q4. How to configure the spark while creating the cluster
- Ans.
Spark cluster configuration involves setting up memory, cores, and other parameters for optimal performance.
Specify the number of executors and executor memory
Set the number of cores per executor
Adjust the driver memory based on the application requirements
Configure shuffle partitions for efficient data processing
Enable dynamic allocation for better resource utilization
Selected
I applied via Naukri.com and was interviewed before Feb 2022. There were 4 interview rounds.
MCQ SQL round coding easy questions
(1 Question)
- Q1. Resume based questions mostly on SQL, Python, Cloud basic to medium level
(1 Question)
- Q1. It was both mangerial and technical round similar to round 1 but more deep
Interview Preparation Tips
I applied via Campus Placement and was interviewed before Jan 2023. There were 5 interview rounds.
Sql,python and java question
Quant,LRDI question, Data interpration
(1 Question)
- Q1. Resume based technical questions
(1 Question)
- Q1. Based in business acumen
(1 Question)
- Q1. Personality based
I applied via Referral and was interviewed in Jun 2022. There were 5 interview rounds.
It was through a link they share and you need to write and submit your code, no execution needed.
(1 Question)
- Q1. R1 was about 40 mins and was a bit tough. Asked more about ADF, ADB, SQL, SQL DW
(1 Question)
- Q1. R2: Was the toughest, asked for 40 mins and more than 30 questions were asked, lucky enough to answer all of them.
(1 Question)
- Q1. Some Managerial questions for 30mins, handling conflicts, leadership skills etc
(1 Question)
- Q1. Asked why I want to join fractal, why looking for other offer, biggest achievement etc
Interview Preparation Tips
Selected
I applied via Company Website and was interviewed before Jun 2023. There were 3 interview rounds.
Apptitude test happen in first go it was quite easy
GD happen between 10 group member we have speak for sometime
(2 Questions)
- Q1. Question on OOPS
- Q2. Quesion on SQL and python
Interview Preparation Tips
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