Github user nongli commented on a diff in the pull request:
https://github.com/apache/spark/pull/11709#discussion_r56597128
--- Diff:
sql/core/src/main/java/org/apache/spark/sql/execution/vectorized/ColumnVector.java
---
@@ -807,6 +809,11 @@ public final int appendStruct(boolean isNull) {
public final boolean isArray() { return resultArray != null; }
/**
+ * Marks this column as being constant.
+ */
+ public final void setIsConstant() { isConstant = true; }
--- End diff --
I think that's a good suggestion. Let's do it as a follow up though.
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