GitHub user maropu opened a pull request: https://github.com/apache/spark/pull/21668
[SPARK-24690][SQL] Add a new config to control plan stats computation in LogicalRelation ## What changes were proposed in this pull request? This pr proposes to propose a new separate config so that `LogicalRelation` can use `rowCount` to compute data statistics in logical plans. In the master, we currently cannot enable `StarSchemaDetection.reorderStarJoins` because we need to turn off CBO to enable it but `StarSchemaDetection` internally references the `rowCount` that is used in LogicalRelation if CBO disabled. ## How was this patch tested? Added tests in `DataFrameJoinSuite`. You can merge this pull request into a Git repository by running: $ git pull https://github.com/maropu/spark PlanStatsConf Alternatively you can review and apply these changes as the patch at: https://github.com/apache/spark/pull/21668.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 #21668 ---- commit f0db73bcad7741ec06560a1b6bb50bb49483b954 Author: Takeshi Yamamuro <yamamuro@...> Date: 2018-06-29T06:22:16Z Fix ---- --- --------------------------------------------------------------------- To unsubscribe, e-mail: reviews-unsubscr...@spark.apache.org For additional commands, e-mail: reviews-h...@spark.apache.org