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Big Data Engineer Interview Questions
898 big data engineer interview questions shared by candidates
Questions on bigdata processing?
What is big data technology ?
get the expected output using spark.
The questions were simple coding challenges that you can take in your preferred language. They were not difficult but to a beginner they might be. I have an intermediate-advanced understanding of python and the questions were cake to me.
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Main things that were asked mainly revolved around SQL, Databases, Big Data, a bit of Linux or Unix commands. Coding Round consisted of 5 questions 1 question atleast of SQL, rest average coding questions.
The first round you will asked the following question. 1. Explain about the tera sort that happens between the map and reduce phase in hadoop job. 2. Explain about class loader, can you have more than one class loader in jvm. 3. Explain how indexing in implemented in sql databases, be prepared to take about b-tree and tree balancing algorithm. 4. How does java guarantee the hashmap look up in O(1). Round 2 1. You will asked to write java streaming code to parse infinite input while keeping memory low the output should predefined length of random sample.
Scenario-based questions etc. , they requested to delineate proposed architecture.
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