tillrohrmann commented on a change in pull request #10682:
[FLINK-15247][Runtime] Wait for all slots to be free before task executor
services shutdown upon stopping
URL: https://github.com/apache/flink/pull/10682#discussion_r362821873
##########
File path:
flink-runtime/src/main/java/org/apache/flink/runtime/taskexecutor/slot/TaskSlotTable.java
##########
@@ -146,12 +149,7 @@ public void start(SlotActions initialSlotActions) {
public void stop() {
started = false;
timerService.stop();
- allocatedSlots
- .values()
- .stream()
- .filter(slot -> !taskSlots.containsKey(slot.getIndex()))
- .forEach(TaskSlot::close);
- allocatedSlots.clear();
+ Preconditions.checkState(allocatedSlots.isEmpty(), "All slots
have to be freed before stopping TaskSlotTable");
Review comment:
This precondition check could be moved to the beginning of this method.
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