deemoliu commented on code in PR #16113:
URL: https://github.com/apache/pinot/pull/16113#discussion_r2164695512
##########
pinot-segment-local/src/main/java/org/apache/pinot/segment/local/recordtransformer/ComplexTypeTransformer.java:
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@@ -179,20 +184,25 @@ public List<String> getInputColumns() {
@Override
public GenericRow transform(GenericRow record) {
try {
- GenericRow originalRow = _fieldsToUnnest.isEmpty() ? null :
record.copy(_fieldsToUnnest);
- flattenMap(record, new
ArrayList<>(record.getFieldToValueMap().keySet()));
- for (String field : _fieldsToUnnest) {
- unnestCollection(record, field);
- }
- Object unnestedRows = record.getValue(GenericRow.MULTIPLE_RECORDS_KEY);
- if (originalRow != null && unnestedRows instanceof Collection) {
- for (GenericRow unnestedRow : (Collection<GenericRow>) unnestedRows) {
- for (String field : _fieldsToUnnest) {
- unnestedRow.putValue(field, originalRow.getValue(field));
+ if (_retainOriginalFieldInUnnest) {
Review Comment:
Should we avoid changing the current behavior?
we can introduce this new config, and update for all our tableConfig to
apply this config.
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