GitHub user mgaido91 opened a pull request: https://github.com/apache/spark/pull/21529
[SPARK-24495][SQL] EnsureRequirement returns wrong plan when reordering equal keys ## What changes were proposed in this pull request? `EnsureRequirement` in its `reorder` method currently assumes that the same key appears only once in the join condition. This of course might not be the case, and when it is not satisfied, it returns a wrong plan which produces a wrong result of the query. ## How was this patch tested? added UT You can merge this pull request into a Git repository by running: $ git pull https://github.com/mgaido91/spark SPARK-24495 Alternatively you can review and apply these changes as the patch at: https://github.com/apache/spark/pull/21529.patch To close this pull request, make a commit to your master/trunk branch with (at least) the following in the commit message: This closes #21529 ---- commit 06858cd5a7e1b11cd5fd1edb206296d75550a8d4 Author: Marco Gaido <marcogaido91@...> Date: 2018-06-11T17:59:19Z [SPARK-24495][SQL] EnsureRequirement returns worng plan when reordering equal keys ---- --- --------------------------------------------------------------------- To unsubscribe, e-mail: reviews-unsubscr...@spark.apache.org For additional commands, e-mail: reviews-h...@spark.apache.org