Must Watch Live Mock Interview for Aspiring Big Data Engineers | PySpark, Hive & SQL
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BIG DATA INTERVIEW SERIES
This mock interview series is launched as a community initiative under Data Engineers Club aimed at aiding the community's growth and development
Our highly experienced guest interviewer, Samraddhi Gupta, / samraddhigupta97 shares invaluable insights and practical guidance drawn from her extensive expertise in the Big Data Domain.
Our expert guest interviewee, Shak Faizan Midda, / skfaizanmidda has an interesting approach to answering the interview questions on Apache Spark, SQL and Azure Cloud Services.
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TIMESTAMPS : Questions Discussed
0:00 Introduction
5:00 SQL Queries
14:46 Window functions
15:29 Differentiate between row number, rank and dense rank
19:51 Managed table and external table
21:05 row based and column based file formats
22:53 What is spark?
23:54 What is meant by in-memory computation in spark and how's different from map reduce?
25:10 What is the role of driver and executor in spark
26:49 What is partition skew and how can we avoid it?
29:01 What is a DAG
30:00 Difference between transformations and actions
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Пікірлер: 7
What is the answer to the last question - 'When we align transformations and action in a DAG, what is that graph called?'
Insert INTO emp2 Select * from emp1;
Python ke remaining videos kab tak Aayenge?
Hm v wait kr rhe bro
select column_list into new_table_name from old_table
Can you tell me how good trendy tech submit Mittal is how deep it is. I'm willing to go through the course but I want to know how much it is
Insert into emp2 select * from emp1....data copy hi to karna hai select * into... Will create new table and then data copying... Tables already hai to create kyu karna