Github user cloud-fan commented on a diff in the pull request:
https://github.com/apache/spark/pull/21912#discussion_r213539798
--- Diff:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/codegen/CodeGenerator.scala
---
@@ -1490,6 +1423,63 @@ object CodeGenerator extends Logging {
}
}
+ /**
+ * Generates code creating a [[UnsafeArrayData]] or [[GenericArrayData]]
based on
+ * given parameters.
+ *
+ * @param arrayName name of the array to create
+ * @param elementType data type of the elements in source array
+ * @param numElements code representing the number of elements the array
should contain
+ * @param additionalErrorMessage string to include in the error message
+ * @param elementSize optional value which shows the size of an element
of the allocated
--- End diff --
it's better to give an example when we will set it.
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