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Posted to reviews@spark.apache.org by GitBox <gi...@apache.org> on 2019/04/09 21:34:00 UTC
[GitHub] [spark] dilipbiswal opened a new pull request #24331:
[SPARK-19712][SQL] Pushdown LeftSemi/LeftAnti below join
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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