Spark-Sql源碼解析之八 Codegen

Codegen，動態字節碼技術，那麼什麼是動態字節碼技術呢？先看來一段代碼，假設SparkPlan爲Sort case class Sort( sortOrder: Seq[SortOrder], global: Boolean, child: SparkPlan) extends UnaryNode { override def requiredChildDist

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