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Big Data Engineer Interview Questions
898 big data engineer interview questions shared by candidates
Overlapping Intervals and Second appearance of every character in a String
Past projects with ETL. Theory questions about Mapreduce, hadoop, spark. Some of these questions were quite obscure like: How does spark process skewed data?
Times X{open, close} , Y{open, close} rec_type, status, time x1, open, 930 x1, close 1030 x2, open, 1035 y1, open, 1040 y2, open, 1041 x2, close, 1100 x3, open, 1110 x3, close, 1115 y1, close, 1120 y2, close, 1121 |---x1, open, 930 |---x1, close 1030 |-----x2, open, 1035 | y1, open, 1040----| | y2, open, 1041 ---+---| |-----x2, close, 1100 | | |---x3, open, 1110 | | |---x3, close, 1115 | | y1, close, 1120---| | y2, close, 1121-------| Find the pairs of x-type and y-type where they have any time overlap between them.
Tell me about your research/projects that are related to big data
What is the difference between SQL and NoSQL database?
They just asked about introduction and selected students own their own will
sql,DS,Hive,Data warehousing ,spark and scala
Overall technical questions on the resume. Spark, Hadoop, Hive, Kafka, etc. e.g, what did you use transformations in Spark Streaming, how does the spark steaming work, map and flatMap in Spark, Hive optimisations, etc.
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