dilipbiswal opened a new pull request #24331: [SPARK-19712][SQL] Pushdown LeftSemi/LeftAnti below join URL: https://github.com/apache/spark/pull/24331 ## What changes were proposed in this pull request? This PR adds support for pushing down LeftSemi and LeftAnti joins below the Join operator. This is a prerequisite work thats needed for the subsequent task of moving the subquery rewrites to the beginning of optimization phase. The larger PR is [here](https://github.com/apache/spark/pull/23211) . This PR addresses the comment at [link](https://github.com/apache/spark/pull/23211#issuecomment-445705922). ## How was this patch tested? Added tests under LeftSemiAntiJoinPushDownSuite.
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