Github user mengxr commented on a diff in the pull request:
https://github.com/apache/spark/pull/12640#discussion_r61386974
--- Diff:
sql/catalyst/src/main/java/org/apache/spark/sql/catalyst/expressions/UnsafeArrayData.java
---
@@ -336,4 +336,62 @@ public UnsafeArrayData copy() {
arrayCopy.pointTo(arrayDataCopy, Platform.BYTE_ARRAY_OFFSET,
sizeInBytes);
return arrayCopy;
}
+
+ public int[] toPrimitiveIntArray() {
+ int[] result = new int[numElements];
+ Platform.copyMemory(baseObject, baseOffset + 4 + 4 * numElements,
--- End diff --
* `4 *` -> `4L *` to avoid overflow. Please check other places as well.
* I don't quite understand the `offsetRegionSize`. Is it reserved for
marking null values or handling variable-length elements in the future? This is
quite expensive for primitive arrays.
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