Github user hvanhovell commented on a diff in the pull request:
https://github.com/apache/spark/pull/22429#discussion_r223980665
--- Diff:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/trees/TreeNode.scala
---
@@ -455,21 +457,37 @@ abstract class TreeNode[BaseType <:
TreeNode[BaseType]] extends Product {
}.mkString(", ")
/** ONE line description of this node. */
- def simpleString: String = s"$nodeName $argString".trim
+ def simpleString(maxFields: Option[Int]): String = {
--- End diff --
Please document the `maxFields` parameter. I am especially interested in
what `None` represents here.
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