jun-he commented on a change in pull request #2454:
URL: https://github.com/apache/iceberg/pull/2454#discussion_r628822284
##########
File path: spark3/src/main/java/org/apache/iceberg/spark/Spark3Util.java
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@@ -292,6 +292,12 @@ public Transform hour(String sourceName, int sourceId) {
return Expressions.hours(sourceName);
}
+ @Override
+ public Transform alwaysNull(int fieldId, String sourceName, int
sourceId) {
+ // do nothing for alwaysNull, it doesn't need to be converted to a
transform
+ return null;
Review comment:
👌 Updated the PR and `Spark3Util` returns `null` to avoid create dummy
objects.
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