Introduce yourself and my ceritifications
Big Data Intern Interview Questions
1,784 big data intern interview questions shared by candidates
Difference b/w a python Pandas DF vs Spark DF HIVE partitions Skewing of Data Salting Buckets Avro vs Parquet Parallel Distributed computation vs normal computing
Describe a situation where you have had to convey a technical subject to a non-technical person
About the coding assessment, asked me what the difference between object oriented programming and functional programming.
Data Skew en Spark? Coût AWS pour les services? Redshift Vacuum?
Technical questions on big data. Not very difficult but the whole interview process is very lengthy and not worth it as the HR may not even respond after all of it.
F. what is UDF; F. given a piece of pyspark code, what are the bugs, what can be improved.
A couple of basic technology-related questions and then asked for the solution to their recent challenge.
Phone Screen: Basic behavioral questions. Nothing you wouldn't expect. On-site interview: Hadoop architecture Hive, Pig questions Speculative execution How to handle NameNode failure? Find second highest salary(SQL) Why Medidata? Where do you see yourself in 5 years? Discussed at length about the volunteer/social work experience from resume Bubble sort code Find pairs in an array whose sum is divisible by a certain number. Find number of occurrences of a character in a character array. How do you check the task ID of a process? How do you check if a service is installed in windows? What is MUTEX and semaphore? Was asked to answer a few Java questions on paper.(Most were basic questions) * What are web services? * What is Maven? Something about Maven targets was also asked. * What is the use of volatile keyword? * What are atomic classes in Java concurrency API? * Difference between final/finally/finalize * Name three design patterns
Spark Architecture and Optimization Techniques
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