tillrohrmann commented on a change in pull request #15557:
URL: https://github.com/apache/flink/pull/15557#discussion_r613122449
##########
File path:
flink-runtime/src/main/java/org/apache/flink/runtime/operators/coordination/OperatorEventValve.java
##########
@@ -96,42 +94,44 @@ public boolean isShut() {
* (because it gets dropped through a call to {@link #reset()} or {@link
#resetForTask(int)},
* then the returned future till be completed exceptionally.
*/
- public CompletableFuture<Acknowledge> sendEvent(
- SerializedValue<OperatorEvent> event, int subtask) {
- synchronized (lock) {
- if (!shut) {
- return eventSender.apply(event, subtask);
- }
-
- final List<BlockedEvent> eventsForTask =
- blockedEvents.computeIfAbsent(subtask, (key) -> new
ArrayList<>());
- final CompletableFuture<Acknowledge> future = new
CompletableFuture<>();
- eventsForTask.add(new BlockedEvent(event, subtask, future));
- return future;
+ public void sendEvent(
+ SerializedValue<OperatorEvent> event,
+ int subtask,
+ CompletableFuture<Acknowledge> result) {
+ checkRunsInMainThread();
+
+ if (!shut) {
+ final CompletableFuture<Acknowledge> ack =
eventSender.apply(event, subtask);
Review comment:
Should we also add `assertRunningInJobMasterMainThread()` to
`Execution.sendOperatorEvent` in order to guard that this method is only
accessed from the main thread?
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