Questions asked in KPMG TO DE - Part 2|| Pyspark || Data Engineer  

In this video I have discussed Questions below.
Q 11 : What is the difference between map and flatMap?
Q 12: What is catalyst Optimizer.
Q 13: What are broadcast variables and accumulators in PySpark?
Q 14: Explain a scenario where we want to reduce the number of partition but we prefer reparation.
Q 15: What is bucketing in spark?
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