guozhangwang commented on a change in pull request #8964:
URL: https://github.com/apache/kafka/pull/8964#discussion_r460592249
##########
File path:
streams/src/main/java/org/apache/kafka/streams/processor/internals/ProcessorStateManager.java
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@@ -454,6 +456,41 @@ public void flush() {
}
}
+ public void flushCache() {
+ RuntimeException firstException = null;
+ // attempting to flush the stores
+ if (!stores.isEmpty()) {
+ log.debug("Flushing all store caches registered in the state
manager: {}", stores);
+ for (final StateStoreMetadata metadata : stores.values()) {
+ final StateStore store = metadata.stateStore;
+
+ try {
+ // buffer should be flushed to send all records to
changelog
+ if (store instanceof TimeOrderedKeyValueBuffer) {
Review comment:
My plan is actually to remove the `flushCache` once we decoupled caching
with emitting (see the TODO comment on the caller).
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