Interview question
Optimize Spark job with data skew on a large join
Asked in HSBC Data Engineer interviews
Asked by
59% candidates
Difficulty
Medium
Round
Technical Round
AI synthesized from candidate reports
Question 1 of 5
Optimize Spark job with data skew on a large join
Medium60% Candidate ReportsTECHNICALHSBCData Engineer
Question
Optimize Spark job with data skew on a large join
High-Level Approach
Start with object lifecycle, then GC phases, then metrics you watch (heap, GC pause, allocation rate).