Copilot commented on code in PR #16254:
URL: https://github.com/apache/pinot/pull/16254#discussion_r2193557054
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pinot-spi/src/main/java/org/apache/pinot/spi/data/readers/GenericRow.java:
##########
@@ -100,7 +80,7 @@ public void init(GenericRow row) {
* the value for the field can be {@code null}.
*/
public Map<String, Object> getFieldToValueMap() {
- return Collections.unmodifiableMap(_fieldToValueMap);
+ return _fieldToValueMap;
Review Comment:
[nitpick] Returning the internal `_fieldToValueMap` allows callers to mutate
the row’s internal state. Consider returning an unmodifiable view or a
defensive copy to preserve encapsulation.
##########
pinot-segment-local/src/main/java/org/apache/pinot/segment/local/recordtransformer/FilterTransformer.java:
##########
@@ -56,16 +61,20 @@ public boolean isNoOp() {
@Override
public List<String> getInputColumns() {
- return _evaluator != null ? _evaluator.getArguments() : List.of();
+ assert _evaluator != null;
+ return _evaluator.getArguments();
}
@Override
- public GenericRow transform(GenericRow record) {
- if (_evaluator != null) {
+ public List<GenericRow> transform(List<GenericRow> records) {
+ assert _evaluator != null;
Review Comment:
Using `assert _evaluator != null` will cause an AssertionError when no
filter is configured. Guard against null `_evaluator` or skip registering the
transformer when no filter function is provided.
##########
pinot-spi/src/main/java/org/apache/pinot/spi/data/readers/GenericRow.java:
##########
@@ -109,7 +89,7 @@ public Map<String, Object> getFieldToValueMap() {
* {@link #putDefaultNullValue(String, Object)}.
*/
public Set<String> getNullValueFields() {
- return Collections.unmodifiableSet(_nullValueFields);
+ return _nullValueFields;
Review Comment:
[nitpick] Returning the internal `_nullValueFields` set exposes it for
external modification. Consider returning an unmodifiable set or cloning to
prevent unintended mutations.
```suggestion
return Collections.unmodifiableSet(_nullValueFields);
```
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