Github user cloud-fan commented on a diff in the pull request:
https://github.com/apache/spark/pull/20861#discussion_r205337069
--- Diff:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/analysis/Analyzer.scala
---
@@ -1994,6 +1996,20 @@ class Analyzer(
}
}
+ /**
+ * Set the seed for random number generation in Uuid expressions.
+ */
+ object ResolvedUuidExpressions extends Rule[LogicalPlan] {
+ private lazy val random = new Random()
+
+ override def apply(plan: LogicalPlan): LogicalPlan = plan.transformUp {
+ case p if p.resolved => p
+ case p => p transformExpressionsUp {
+ case Uuid(None) => Uuid(Some(random.nextLong()))
--- End diff --
what's the current behavior for rand in streaming?
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