Github user kiszk commented on a diff in the pull request:
https://github.com/apache/spark/pull/23206#discussion_r238776051
--- Diff:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/optimizer/Optimizer.scala
---
@@ -235,10 +235,127 @@ abstract class
GitHub user skambha opened a pull request:
https://github.com/apache/spark/pull/23206
[SPARK-26249][SQL] Add ability to inject a rule in order and to add a batch
via the Spark Extension Points API
## What changes were proposed in this pull request?
Add two new APIs to
