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Optimize Spark job with data skew on a large join

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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).

Optimize Spark job with data skew on a large join — HSBC… | InterviewForge AI