GuanYuan Data Tech Team
Aug 18, 2022 · Big Data
Why Spark’s compatiblePartitions Causes CPU Spikes and How to Fix It
The article investigates a Spark driver CPU overload caused by the compatiblePartitions method’s expensive permutation logic in window functions, explains the underlying O(n!) complexity, and presents a simplified implementation that eliminates the issue and has been merged into the official Spark codebase.
CPU OptimizationSparkbig data
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