Spark3.0.0 新加入的 解決數據傾斜的性能優化 Optimizing Skew Join

Spark3.x新加入的數據傾斜性能優化Optimizing Skew Join Data skew can severely downgrade the performance of join queries. 數據傾斜會嚴重降低連接查詢的性能。 This feature dynamically handles skew in sort-merge join by splitting (and

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