Github user techaddict commented on a diff in the pull request:
https://github.com/apache/spark/pull/12846#discussion_r61803861
--- Diff:
sql/core/src/main/scala/org/apache/spark/sql/internal/SQLConf.scala ---
@@ -726,6 +726,14 @@ private[sql] class SQLConf extends Serializable with
CatalystConf with Logging {
}
/**
+ * Return the value of an optional Spark SQL configuration property for
the given key. If the key
+ * is not set yet, returns None.
+ */
+ def getOptionalConf[T](entry: OptionalConfigEntry[T]): Option[T] = {
--- End diff --
Its used at
https://github.com/apache/spark/blob/master/sql/core/src/main/scala/org/apache/spark/sql/internal/SQLConf.scala#L549,
so added the require line.
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