dima5rr commented on a change in pull request #8706:
URL: https://github.com/apache/kafka/pull/8706#discussion_r431687179
##########
File path:
streams/src/main/java/org/apache/kafka/streams/state/internals/QueryableStoreProvider.java
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@@ -58,9 +58,21 @@ public QueryableStoreProvider(final
List<StreamThreadStateStoreProvider> storePr
}
final List<T> allStores = new ArrayList<>();
for (final StreamThreadStateStoreProvider storeProvider :
storeProviders) {
- allStores.addAll(storeProvider.stores(storeQueryParameters));
+ final List<T> stores = storeProvider.stores(storeQueryParameters);
+ if (stores != null && !stores.isEmpty()) {
+ allStores.addAll(stores);
+ if (storeQueryParameters.partition() != null) {
+ break;
+ }
+ }
}
if (allStores.isEmpty()) {
+ if (storeQueryParameters.partition() != null) {
Review comment:
I extended StateStoreProviderStub functionality to add store by
partition with default partition 0, + relevant tests in
QueryableStoreProviderTest
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