dima5rr commented on a change in pull request #9020:
URL: https://github.com/apache/kafka/pull/9020#discussion_r498055567
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File path:
streams/src/main/java/org/apache/kafka/streams/state/internals/WrappingStoreProvider.java
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@@ -46,11 +46,22 @@ public void setStoreQueryParameters(final
StoreQueryParameters storeQueryParamet
public <T> List<T> stores(final String storeName,
final QueryableStoreType<T> queryableStoreType) {
final List<T> allStores = new ArrayList<>();
- for (final StreamThreadStateStoreProvider provider : storeProviders) {
- final List<T> stores = provider.stores(storeQueryParameters);
- allStores.addAll(stores);
+ for (final StreamThreadStateStoreProvider storeProvider :
storeProviders) {
+ final List<T> stores = storeProvider.stores(storeQueryParameters);
+ if (!stores.isEmpty()) {
+ allStores.addAll(stores);
+ if (storeQueryParameters.partition() != null) {
+ break;
+ }
+ }
}
if (allStores.isEmpty()) {
+ if (storeQueryParameters.partition() != null) {
+ throw new InvalidStateStoreException(
+ String.format("The specified partition %d for store %s
does not exist.",
Review comment:
Hey @guozhangwang, you're right, this check is ambiguous, it's more
likely parameter sanity validation when user explicitly specify a single
partition.
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