Big Data Engineer Mock Interview | Questions on Data Skewness | Salting | Out of Memory Error
𝐓𝐨 𝐞𝐧𝐡𝐚𝐧𝐜𝐞 𝐲𝐨𝐮𝐫 𝐜𝐚𝐫𝐞𝐞𝐫 𝐚𝐬 𝐚 𝐂𝐥𝐨𝐮𝐝 𝐃𝐚𝐭𝐚 𝐄𝐧𝐠𝐢𝐧𝐞𝐞𝐫, 𝐂𝐡𝐞𝐜𝐤 https://trendytech.in/?src=youtube&su... for curated courses developed by me.
𝐖𝐚𝐧𝐭 𝐭𝐨 𝐌𝐚𝐬𝐭𝐞𝐫 𝐒𝐐𝐋? 𝐋𝐞𝐚𝐫𝐧 𝐒𝐐𝐋 𝐭𝐡𝐞 𝐫𝐢𝐠𝐡𝐭 𝐰𝐚𝐲 𝐭𝐡𝐫𝐨𝐮𝐠𝐡 𝐭𝐡𝐞 𝐦𝐨𝐬𝐭 𝐬𝐨𝐮𝐠𝐡𝐭 𝐚𝐟𝐭𝐞𝐫 𝐜𝐨𝐮𝐫𝐬𝐞 - 𝐒𝐐𝐋 𝐂𝐡𝐚𝐦𝐩𝐢𝐨𝐧𝐬 𝐏𝐫𝐨𝐠𝐫𝐚𝐦!
"𝐀 8 𝐰𝐞𝐞𝐤 𝐏𝐫𝐨𝐠𝐫𝐚𝐦 𝐝𝐞𝐬𝐢𝐠𝐧𝐞𝐝 𝐭𝐨 𝐡𝐞𝐥𝐩 𝐲𝐨𝐮 𝐜𝐫𝐚𝐜𝐤 𝐭𝐡𝐞 𝐢𝐧𝐭𝐞𝐫𝐯𝐢𝐞𝐰𝐬 𝐨𝐟 𝐭𝐨𝐩 𝐩𝐫𝐨𝐝𝐮𝐜𝐭 𝐛𝐚𝐬𝐞𝐝 𝐜𝐨𝐦𝐩𝐚𝐧𝐢𝐞𝐬 𝐛𝐲 𝐝𝐞𝐯𝐞𝐥𝐨𝐩𝐢𝐧𝐠 𝐚 𝐭𝐡𝐨𝐮𝐠𝐡𝐭 𝐩𝐫𝐨𝐜𝐞𝐬𝐬 𝐚𝐧𝐝 𝐚𝐧 𝐚𝐩𝐩𝐫𝐨𝐚𝐜𝐡 𝐭𝐨 𝐬𝐨𝐥𝐯𝐞 𝐚𝐧 𝐮𝐧𝐬𝐞𝐞𝐧 𝐏𝐫𝐨𝐛𝐥𝐞𝐦."
𝐇𝐞𝐫𝐞 𝐢𝐬 𝐡𝐨𝐰 𝐲𝐨𝐮 𝐜𝐚𝐧 𝐫𝐞𝐠𝐢𝐬𝐭𝐞𝐫 𝐟𝐨𝐫 𝐭𝐡𝐞 𝐏𝐫𝐨𝐠𝐫𝐚𝐦 -
𝐑𝐞𝐠𝐢𝐬𝐭𝐫𝐚𝐭𝐢𝐨𝐧 𝐋𝐢𝐧𝐤 (𝐂𝐨𝐮𝐫𝐬𝐞 𝐀𝐜𝐜𝐞𝐬𝐬 𝐟𝐫𝐨𝐦 𝐈𝐧𝐝𝐢𝐚) : https://rzp.io/l/SQLINR
𝐑𝐞𝐠𝐢𝐬𝐭𝐫𝐚𝐭𝐢𝐨𝐧 𝐋𝐢𝐧𝐤 (𝐂𝐨𝐮𝐫𝐬𝐞 𝐀𝐜𝐜𝐞𝐬𝐬 𝐟𝐫𝐨𝐦 𝐨𝐮𝐭𝐬𝐢𝐝𝐞 𝐈𝐧𝐝𝐢𝐚) : https://rzp.io/l/SQLUSD
I have trained over 20,000+ professionals in the field of Data Engineering in the last 5 years.
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, Chandrali Sarkar, / chandrali-sarkar-4570a1102 shares invaluable insights and practical guidance drawn from her extensive expertise in the Big Data Domain.
Our expert guest interviewee, Soumya Ranjan Parida, / soumya-parida has an interesting approach to answering the interview questions on Apache Spark, SQL and Azure Cloud Services.
Link of Free SQL & Python series developed by me are given below -
SQL Playlist - • SQL tutorial for everyone by Sumit Si...
Python Playlist - • Complete Python By Sumit Mittal Sir
Don't miss out - Subscribe to the channel for more such informative interviews and unlock the secrets to success in this thriving field!
Social Media Links :
LinkedIn - / bigdatabysumit
Twitter - / bigdatasumit
Instagram - / bigdatabysumit
Student Testimonials - https://trendytech.in/#testimonials
TIMESTAMPS : Questions Discussed
00:35 Introduction
01:40 Explain your project's end-to-end pipeline and overview.
03:17 What is the data source for your project?
03:36 Where does the data get ingested?
04:36 What types of data are being processed?
05:04 How do you capture incremental data in an OLTP environment?
07:52 What is the frequency and volume of the incoming data?
08:28 Which file formats have you worked with?
09:00 What is the predicate pushdown?
10:14 What optimizations have you applied in Spark?
10:45 Define broadcast join.
11:10 List some transformations you've used in Spark.
11:27 Explain narrow and wide transformations.
12:03 What is the difference between reduceByKey and groupByKey.
12:56 Have you encountered "out of memory" errors in Spark? How did you resolve them?
14:22 How will salting help in resolving out of memory error?
14:46 What is data skewness?
15:22 Explain cache and persist in Spark.
16:57 If memory and disk are full then in that case what will happen?
17:40 When would you use coalesce and repartition?
18:00 Provide a scenario where coalesce and repartition can be used?
18:38 Where does repartition happen at driver or executor level?
19:30 What is the difference between rank, dense rank, and row number functions?
22:06 Describe the internal process of submitting a Spark job.
Music track: Retro by Chill Pulse
Source: https://freetouse.com/music
Background Music for Video (Free)
Tags
#mockinterview #bigdata #career #dataengineering #data #datascience #dataanalysis #productbasedcompanies #interviewquestions #apachespark #google #interview #faang #companies #amazon #walmart #flipkart #microsoft #azure #databricks #jobs
Watch video Big Data Engineer Mock Interview | Questions on Data Skewness | Salting | Out of Memory Error online without registration, duration hours minute second in high quality. This video was added by user Sumit Mittal 28 May 2024, don't forget to share it with your friends and acquaintances, it has been viewed on our site 8,85 once and liked it 13 people.