GJL commented on a change in pull request #9268: [FLINK-13452] Ensure to fail 
global when exception happens during reseting tasks of regions
URL: https://github.com/apache/flink/pull/9268#discussion_r309681363
 
 

 ##########
 File path: 
flink-runtime/src/main/java/org/apache/flink/runtime/concurrent/FutureUtils.java
 ##########
 @@ -189,6 +189,36 @@
                        scheduledExecutor);
        }
 
+       /**
+        * Schedule the operation with given delay.
+        *
+        * @param operation to schedule
+        * @param delay delay to schedule
+        * @param scheduledExecutor executor to be used for the operation
+        * @param <T> type of the result
+        * @return Future which schedule the given operation with given delay.
+        */
+       public static <T> CompletableFuture<T> scheduleAsync(
 
 Review comment:
   This method is not unit tested but I think it should be because it could be 
used outside of the restart strategies. See `FutureUtilsTest`

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