GitHub user viirya opened a pull request: https://github.com/apache/spark/pull/19501
[SPARK-22223][SQL] ObjectHashAggregate should not introduce unnecessary shuffle ## What changes were proposed in this pull request? `ObjectHashAggregateExec` should override `outputPartitioning` in order to avoid unnecessary shuffle. ## How was this patch tested? Added Jenkins test. You can merge this pull request into a Git repository by running: $ git pull https://github.com/viirya/spark-1 SPARK-22223 Alternatively you can review and apply these changes as the patch at: https://github.com/apache/spark/pull/19501.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 #19501 ---- commit c84562763034e3fc6a7ddba785131cb4a1c36eb4 Author: Liang-Chi Hsieh <vii...@gmail.com> Date: 2017-10-15T06:02:59Z ObjectHashAggregate should not introduce unnecessary shuffle. ---- --- --------------------------------------------------------------------- To unsubscribe, e-mail: reviews-unsubscr...@spark.apache.org For additional commands, e-mail: reviews-h...@spark.apache.org