twalthr commented on code in PR #26516:
URL: https://github.com/apache/flink/pull/26516#discussion_r2065864255
##########
flink-table/flink-table-planner/src/main/java/org/apache/flink/table/planner/plan/nodes/exec/serde/ChangelogModeJsonDeserializer.java:
##########
@@ -49,8 +51,14 @@ public ChangelogMode deserialize(
ChangelogMode.Builder builder = ChangelogMode.newBuilder();
JsonNode rowKindsNode = jsonParser.readValueAsTree();
for (JsonNode rowKindNode : rowKindsNode) {
- RowKind rowKind =
RowKind.valueOf(rowKindNode.asText().toUpperCase());
- builder.addContainedKind(rowKind);
+ final String rowKindText = rowKindNode.asText().toUpperCase();
Review Comment:
we can also just remove this `toUpperCase` . IMHO `toUpperCase` /
`toLowerCase` are just adding unnecessary runtime overhead and lead to weird
bugs.
##########
flink-table/flink-table-planner/src/main/java/org/apache/flink/table/planner/plan/nodes/exec/serde/ChangelogModeJsonSerializer.java:
##########
@@ -49,7 +50,12 @@ public void serialize(
throws IOException {
jsonGenerator.writeStartArray();
for (RowKind rowKind : changelogMode.getContainedKinds()) {
- jsonGenerator.writeString(rowKind.name());
+ if (Objects.requireNonNull(rowKind) == RowKind.DELETE
Review Comment:
```suggestion
if (rowKind == RowKind.DELETE
```
Why should this be null?
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