linliu-code commented on code in PR #17834:
URL: https://github.com/apache/hudi/pull/17834#discussion_r2762093752
##########
hudi-client/hudi-spark-client/src/main/java/org/apache/hudi/keygen/BuiltinKeyGenerator.java:
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@@ -233,23 +235,43 @@ private <S> S combineRecordKeyInternal(
}
private <S> S combineCompositeRecordKeyInternal(
+ boolean encodeSingleKeyFieldName,
Supplier<PartitionPathFormatterBase.StringBuilder<S>> builderFactory,
Function<Object, S> converter,
Function<S, S> emptyKeyPartHandler,
Predicate<S> isNullOrEmptyKeyPartPredicate,
Object... recordKeyParts
) {
- boolean hasNonNullNonEmptyPart = false;
+ if (recordKeyParts.length == 0) {
+ throw new HoodieKeyException(String.format("All of the values for (%s)
were either null or empty", recordKeyFields));
+ }
PartitionPathFormatterBase.StringBuilder<S> sb = builderFactory.get();
+
+ if (recordKeyParts.length == 1) {
+ // NOTE: If record-key part has already been a string [[toString]] will
be a no-op
+ S convertedKeyPart =
emptyKeyPartHandler.apply(converter.apply(recordKeyParts[0]));
+
+ if (encodeSingleKeyFieldName) {
+ sb.appendJava(recordKeyFields.get(0));
+ sb.appendJava(DEFAULT_COMPOSITE_KEY_FILED_VALUE);
Review Comment:
nit: FILED -> FIELD
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