Hi,

Just noticed that
http://spark.apache.org/docs/latest/sql-migration-guide-upgrade.html (Spark
2.4.5) has formatting issues in "Upgrading from Spark SQL 2.4.3 to 2.4.4"
[1] which got fixed in master [2]. That's OK.

What made me wonder was the other change to the section "Upgrading from
Spark SQL 2.4 to 2.4.5" [3] that had the following item included:

"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 behavior can be restored setting
spark.sql.legacy.rdd.applyConf to false: in this case, SQL configurations
are ignored for operations performed on a RDD derived from a Dataset."

Why was this removed in master [4]? It was mentioned in "Notable changes"
of Spark Release 2.4.5 [5].

[1]
http://spark.apache.org/docs/latest/sql-migration-guide-upgrade.html#upgrading-from-spark-sql-243-to-244
[2]
https://github.com/apache/spark/blob/master/docs/sql-migration-guide.md#upgrading-from-spark-sql-243-to-244
[3]
http://spark.apache.org/docs/latest/sql-migration-guide-upgrade.html#upgrading-from-spark-sql-24-to-245
[4]
https://github.com/apache/spark/blob/master/docs/sql-migration-guide.md#upgrading-from-spark-sql-244-to-245
[5] http://spark.apache.org/releases/spark-release-2-4-5.html

Pozdrawiam,
Jacek Laskowski
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