the-other-tim-brown commented on code in PR #11381:
URL: https://github.com/apache/hudi/pull/11381#discussion_r1632525375
##########
hudi-common/src/main/java/org/apache/hudi/internal/schema/utils/AvroSchemaEvolutionUtils.java:
##########
@@ -113,6 +120,21 @@ public static InternalSchema reconcileSchema(Schema
incomingSchema, InternalSche
typeChange.updateColumnType(col, inComingInternalSchema.findType(col));
});
+ // mark columns missing from incoming schema as nullable
+ Set<String> visited = new HashSet<>();
+ diffFromOldSchema.stream()
+ // ignore meta fields
+ .filter(col -> !META_FIELD_NAMES.contains(col))
+ .sorted()
+ .forEach(col -> {
+ // if parent is marked as nullable, only update the parent and not
all the missing children field
+ String parent = TableChangesHelper.getParentName(col);
+ if (!visited.contains(parent)) {
+ typeChange.updateColumnNullability(col, true);
+ }
+ visited.add(col);
+ });
Review Comment:
@nsivabalan I've updated the PR to include the boolean
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