lucasbru commented on code in PR #20910:
URL: https://github.com/apache/kafka/pull/20910#discussion_r2559447281
##########
streams/src/main/java/org/apache/kafka/streams/kstream/internals/KTableImpl.java:
##########
@@ -497,6 +522,218 @@ private <VR> KTable<K, VR> doTransformValues(final
ValueTransformerWithKeySuppli
builder);
}
+ private <VR> FixedKeyProcessorSupplier<? super K, ? super V, ? extends VR>
createValueTransformerWithKeySupplierToFixedProcessorSupplierAdaptor(
+ final ValueTransformerWithKeySupplier<? super K, ? super V, ? extends
VR> transformerSupplier
+ ) {
+ return new FixedKeyProcessorSupplier<>() {
+
+ @Override
+ public Set<StoreBuilder<?>> stores() {
+ return transformerSupplier.stores();
+ }
+
+ @Override
+ public FixedKeyProcessor<K, V, VR> get() {
+ final ValueTransformerWithKey<? super K, ? super V, ? extends
VR> valueTransformerWithKey = transformerSupplier.get();
+
+ return new FixedKeyProcessor<>() {
+ private final AtomicReference<Long> timestamp = new
AtomicReference<>();
+ private final AtomicReference<Headers> headers = new
AtomicReference<>();
Review Comment:
Why `AtonicReference`? Where is the concurrency
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