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Data Engineer Interview Questions
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How do you debug spark jobs?
Given a timeseries dataset with the following columns: device_type, timestamp, number_of_requests. Find a the minute in which the next 60 minutes sum up to the greatest total for each type of device.
what is the most complex thing you faced in your recent project?how did you resolve that?what was your approach?what did you learn from that
Q: The USA and Russia has the Largest natural gas resources in the world. Qater is 4th although 849 times smaller than USA. Which Country ranks 3rd?
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SQL (follow up) Now imagine that you have a user that is "always" accessing table A, but you need to move the changes (in 10000 rows) from the temp table into table A without the user being affected. How would you do that ?
SQL Imagine you want to make some changes to table A, without actually changing table A. How do you do it ?
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