Github user rxin commented on a diff in the pull request:
https://github.com/apache/spark/pull/1346#discussion_r15510995
--- Diff:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/WrapDynamic.scala
---
@@ -21,7 +21,9 @@ import scala.language.dynamics
import org.apache.spark.sql.catalyst.types.DataType
-case object DynamicType extends DataType
+case object DynamicType extends DataType {
--- End diff --
Do you mind adding scaladoc to explain what DynamicType is used for? (While
you are at it, also add scaladoc for WrapDynamic and DynamicRow)
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