zentol commented on pull request #15324:
URL: https://github.com/apache/flink/pull/15324#issuecomment-809147327


   Looks like the RM fails slot requests with a different cause if no TM is 
connected.
   ```
   Caused by: 
org.apache.flink.runtime.resourcemanager.exceptions.UnfulfillableSlotRequestException:
 Could not fulfill slot request f53b49e86b45419d303e2a9922c9f0b4. Requested 
resource profile (ResourceProfile{UNKNOWN}) is unfulfillable.
        at 
org.apache.flink.runtime.resourcemanager.slotmanager.SlotManagerImpl.setFailUnfulfillableRequest(SlotManagerImpl.java:651)
 ~[classes/:?]
        at 
org.apache.flink.runtime.resourcemanager.ResourceManager.setFailUnfulfillableRequest(ResourceManager.java:1371)
 ~[classes/:?]
        at 
org.apache.flink.runtime.resourcemanager.StandaloneResourceManager.lambda$startStartupPeriod$0(StandaloneResourceManager.java:123)
 ~[classes/:?]
        at 
org.apache.flink.runtime.rpc.akka.AkkaRpcActor.handleRunAsync(AkkaRpcActor.java:440)
 ~[classes/:?]
        at 
org.apache.flink.runtime.rpc.akka.AkkaRpcActor.handleRpcMessage(AkkaRpcActor.java:208)
 ~[classes/:?]
        ... 20 more
   ```
   I will fix it by reverting back to 1 TM and adjusting the job to not be 
runnable on a single slot.


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