zentol commented on code in PR #22169:
URL: https://github.com/apache/flink/pull/22169#discussion_r1138371133
##########
flink-runtime/src/main/java/org/apache/flink/runtime/scheduler/adaptive/AdaptiveScheduler.java:
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@@ -1255,4 +1268,17 @@ <T extends State> T transitionToState(StateFactory<T>
targetState) {
State getState() {
return state;
}
+
+ /**
+ * Check for slots that are idle for more than {@link
JobManagerOptions#SLOT_IDLE_TIMEOUT} and
+ * release them back to the ResourceManager.
+ */
+ private void checkIdleSlotTimeout() {
+ declarativeSlotPool.releaseIdleSlots(System.currentTimeMillis());
+ getMainThreadExecutor()
+ .schedule(
+ this::checkIdleSlotTimeout,
+ slotIdleTimeout.toMillis(),
+ TimeUnit.MILLISECONDS);
+ }
Review Comment:
The main thread executor is scoped to a JobMaster. While it won't run
infinitely it will still run while the scheduler was shut down but the JM is
still running (e.g., during the JM shutdown procedure)
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