Only push down LeftSemi/LeftAnti over Aggregate if join can be planned as broadcast join ( SPARK-34081).Cardinality estimation of union, sort, and range operator ( SPARK-33411).Use a relative cost comparison function in the CBO ( SPARK-34922).Push down limit through WINDOW when partition spec is empty ( SPARK-34575).Push down limit for LEFT SEMI and LEFT ANTI join ( SPARK-36404, SPARK-34514).Push down limit through Project with Join ( SPARK-34622).Remove redundant aggregates in the Optimizer ( SPARK-33122).Improve the performance of type coercion rules ( SPARK-35103).
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