rzhang10 commented on code in PR #6004:
URL: https://github.com/apache/iceberg/pull/6004#discussion_r1005299156
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core/src/main/java/org/apache/iceberg/avro/ValueReaders.java:
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@@ -612,6 +615,9 @@ protected StructReader(
} else if (field.fieldId() == MetadataColumns.IS_DELETED.fieldId()) {
positionList.add(pos);
constantList.add(false);
+ } else if (record.getField(field.name()) == null &&
field.initialDefault() != null) {
Review Comment:
Sure, I suggested the above way of creating a "_d" field which can be a
marker, or I can use a custom avro property, something like "<HAS_DEFAULT ->
true>" to signify it, WDYT?
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