Github user MaxGekk commented on a diff in the pull request:
https://github.com/apache/spark/pull/21598#discussion_r197082278
--- Diff:
sql/catalyst/src/main/scala/org/apache/spark/sql/internal/SQLConf.scala ---
@@ -1314,6 +1314,13 @@ object SQLConf {
"Other column values can be ignored during parsing even if they are
malformed.")
.booleanConf
.createWithDefault(true)
+
+ val LEGACY_SIZE_OF_NULL = buildConf("spark.sql.legacy.sizeOfNull")
--- End diff --
Yes, we would like to change/improve external behavior under flags in the
`spark.sql.legacy.*` namespace. All those flags should be removed in the next
major release 3.0. Please, share your thoughts about it.
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