xintongsong commented on a change in pull request #11320: 
[FLINK-16437][runtime] Make SlotManager allocate resource from ResourceManager 
at the worker granularity.
URL: https://github.com/apache/flink/pull/11320#discussion_r389454700
 
 

 ##########
 File path: 
flink-runtime/src/main/java/org/apache/flink/runtime/resourcemanager/slotmanager/SlotManagerImpl.java
 ##########
 @@ -804,22 +808,31 @@ private boolean 
isFulfillableByRegisteredSlots(ResourceProfile resourceProfile)
        }
 
        private Optional<PendingTaskManagerSlot> 
allocateResource(ResourceProfile resourceProfile) {
-               final Collection<ResourceProfile> requestedSlots = 
resourceActions.allocateResource(resourceProfile);
+               if (workerResourceSpec == null) {
+                       // standalone mode, cannot allocate resource
 
 Review comment:
   @wangyang0918
   True. That's why we annotate it as `@Nullable` and, as suggested by Tison 
and updated to the PR, clearly documented that a `null` value means in 
standalone mode.

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