GitHub user uncleGen opened a pull request: https://github.com/apache/spark/pull/17896
[SPARK-20373][SQL][SS] Batch queries with 'Dataset/DataFrame.withWatermark()` does not execute ## What changes were proposed in this pull request? Any Dataset/DataFrame batch query with the operation `withWatermark` does not execute because the batch planner does not have any rule to explicitly handle the EventTimeWatermark logical plan. The right solution is to simply remove the plan node, as the watermark should not affect any batch query in any way. Changes: - In this PR, we add a new rule `CheckEventTimeWatermark` to check if we need to ignore the event time watermark. We will ignore watermark in any batch query. Followups: - Add `CheckEventTimeWatermark` into analyzer rule list. We can not add this rule into analyzer directly, because streaming query will be copied to a internal batch query in every trigger, and the rule will be applied to this internal batch query mistakenly. IIUC, we should refactor related codes to better define a query is batch or streaming. Right? Others: - A typo fix in example. ## How was this patch tested? add new unit test. You can merge this pull request into a Git repository by running: $ git pull https://github.com/uncleGen/spark SPARK-20373 Alternatively you can review and apply these changes as the patch at: https://github.com/apache/spark/pull/17896.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 #17896 ---- commit 563721241851751c2bb1736161febe73b8abba3b Author: uncleGen <husty...@gmail.com> Date: 2017-05-08T03:19:35Z Ignore event time watermark in batch query. ---- --- If your project is set up for it, you can reply to this email and have your reply appear on GitHub as well. If your project does not have this feature enabled and wishes so, or if the feature is enabled but not working, please contact infrastructure at infrastruct...@apache.org or file a JIRA ticket with INFRA. --- --------------------------------------------------------------------- To unsubscribe, e-mail: reviews-unsubscr...@spark.apache.org For additional commands, e-mail: reviews-h...@spark.apache.org