revans2 commented on a change in pull request #24795: [SPARK-27945][SQL]
Minimal changes to support columnar processing
URL: https://github.com/apache/spark/pull/24795#discussion_r299008558
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File path:
sql/core/src/main/java/org/apache/spark/sql/execution/vectorized/WritableColumnVector.java
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@@ -604,7 +604,10 @@ public final int appendArray(int length) {
*/
public final int appendStruct(boolean isNull) {
if (isNull) {
- appendNull();
+ // This is the same as appendNull but without the assertion for struct
types
Review comment:
Because `appendNull` itself has an assertion that you are not appending a
struct. So any call to `appendStruct` with `isNull` true would have failed.
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