hvanhovell commented on a change in pull request #25734:
[SPARK-28939][SQL][2.4] Propagate SQLConf for plans executed by toRdd
URL: https://github.com/apache/spark/pull/25734#discussion_r323613828
##########
File path: docs/sql-migration-guide-upgrade.md
##########
@@ -7,6 +7,12 @@ displayTitle: Spark SQL Upgrading Guide
* Table of contents
{:toc}
+## Upgrading from Spark SQL 2.4 to 2.4.5
+
+ - Starting from 2.4.5, SQL configurations are effective also when a Dataset
is converted to an RDD and its
+ plan is executed due to action on the derived RDD. The previous buggy
behavior can be restored setting
+ `spark.sql.legacy.rdd.applyConf` to `false`.
Review comment:
I don't think we need to add the flag to master. We are allowed to break
behavior there.
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