Walmart

Pipeline design and Spark tuning, usually one skew question.

8 questions

PySpark · 3SQL · 2Python · 3

Status	Title	Technology	Topic	Acceptance	Difficulty
○	25.Parse fixed-width log lines	Python	Data modeling	19.0%	Easy
○	1.Deduplicate customers, keep latest record	PySpark	Window functions	38.1%	Medium
○	14.Month-over-month revenue growth	SQL	Window functions	41.2%	Medium
○	15.Find duplicate invoices	SQL	Deduplication	53.8%	Easy
○	85.The basket of each order	PySpark	Aggregation	—	Medium
○	94.Year-over-year revenue growth	PySpark	Window functions	—	Medium
○	96.Collapse a change feed to current state	Python	Data quality	—	Medium
○	99.Reconcile two sources	Python	Joins	—	Easy

Community-reported interview topics. Not official Walmart questions and no affiliation is implied.