zhuzhurk commented on a change in pull request #9860: [FLINK-14331][runtime] 
Reset vertices right after they transition to terminated states
URL: https://github.com/apache/flink/pull/9860#discussion_r334218371
 
 

 ##########
 File path: 
flink-runtime/src/main/java/org/apache/flink/runtime/scheduler/DefaultScheduler.java
 ##########
 @@ -211,7 +215,8 @@ private Runnable restartTasks(final 
Set<ExecutionVertexVersion> executionVertexV
        }
 
        private CompletableFuture<?> cancelExecutionVertex(final 
ExecutionVertexID executionVertexId) {
-               return 
executionVertexOperations.cancel(getExecutionVertex(executionVertexId));
+               return 
executionVertexOperations.cancel(getExecutionVertex(executionVertexId))
+                       .whenComplete((Object ignored, Throwable t) -> 
executionSlotAllocator.cancel(executionVertexId));
 
 Review comment:
   The check for duplicated slot request is done in commit 
4270dd87c5e6657708d32bc1dd71cd07ccb9e09f.

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