Data Associate Interview Questions

2,707 data associate interview questions shared by candidates

1St Round Q1 What is currying ? Q2 What are partial functions ? Q3 Difference b/w AnyVal and AnyRef ? Q4 Case Classes in depth discussion ? Q5 Given an array of integers return the index's of two number which equals to the target. Q6 Why parquet ? Questions around my current Project 2nd Round RDD practical problem where I needed to get the output of RDD operation DF practical problem ReduceByKey vs GroupByKey Optimization techniques What is data skew and why care about it ?
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Associate Data Engineer

Interviewed at BlackRock

3.7
Apr 30, 2022

1St Round Q1 What is currying ? Q2 What are partial functions ? Q3 Difference b/w AnyVal and AnyRef ? Q4 Case Classes in depth discussion ? Q5 Given an array of integers return the index's of two number which equals to the target. Q6 Why parquet ? Questions around my current Project 2nd Round RDD practical problem where I needed to get the output of RDD operation DF practical problem ReduceByKey vs GroupByKey Optimization techniques What is data skew and why care about it ?

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