GitHub user gatorsmile opened a pull request: https://github.com/apache/spark/pull/19393
[SPARK-21644][SQL] LocalLimit.maxRows is defined incorrectly ## What changes were proposed in this pull request? The definition of `maxRows` in `LocalLimit` operator was simply wrong. This patch introduces a new `maxRowsPerPartition` method and uses that in pruning. The patch also adds more documentation on why we need local limit vs global limit. Note that this previously has never been a bug because the way the code is structured, but future use of the maxRows could lead to bugs. ## How was this patch tested? Should be covered by existing test cases. Closes #18851 You can merge this pull request into a Git repository by running: $ git pull https://github.com/gatorsmile/spark pr-18851 Alternatively you can review and apply these changes as the patch at: https://github.com/apache/spark/pull/19393.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 #19393 ---- commit 9911176d901a6bdfadec3ef68b28e6dd2c82be9e Author: Reynold Xin <r...@databricks.com> Date: 2017-08-05T01:19:26Z [SPARK-21644][SQL] LocalLimit.maxRows is defined incorrectly commit fb97a73cd9ad217f04992cd70a44d22b29dc6a9b Author: gatorsmile <gatorsm...@gmail.com> Date: 2017-09-29T21:34:05Z fix ---- --- --------------------------------------------------------------------- To unsubscribe, e-mail: reviews-unsubscr...@spark.apache.org For additional commands, e-mail: reviews-h...@spark.apache.org