Github user cloud-fan commented on a diff in the pull request:
https://github.com/apache/spark/pull/10527#discussion_r52596991
--- Diff:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/misc.scala
---
@@ -442,3 +444,88 @@ case class PrintToStderr(child: Expression) extends
UnaryExpression {
""".stripMargin)
}
}
+
+/**
+ * A function that encrypts input using AES. Key lengths of 128, 192 or
256 bits can be used.
+ * 192 and 256 bits keys can be used if Java Cryptography Extension (JCE)
Unlimited Strength
+ * Jurisdiction Policy Files are installed. If either argument is NULL or
the key length is
+ * not one of the permitted values, the return value is NULL.
--- End diff --
pls update the doc
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