Spark3.0.0 新加入的 解决数据倾斜的性能优化 Optimizing Skew Join

Spark3.x新加入的数据倾斜性能优化Optimizing Skew Join Data skew can severely downgrade the performance of join queries. 数据倾斜会严重降低连接查询的性能。 This feature dynamically handles skew in sort-merge join by splitting (and

>>阅读原文<<