tillrohrmann commented on a change in pull request #6406: [FLINK-9159][runtime] 
Sanity check default timeout values
URL: https://github.com/apache/flink/pull/6406#discussion_r206500540
 
 

 ##########
 File path: 
flink-runtime/src/main/java/org/apache/flink/runtime/resourcemanager/slotmanager/SlotManagerConfiguration.java
 ##########
 @@ -68,11 +74,24 @@ public static SlotManagerConfiguration 
fromConfiguration(Configuration configura
                                "value " + AkkaOptions.ASK_TIMEOUT + '.', e);
                }
 
-               final Time slotRequestTimeout = Time.milliseconds(
-                               
configuration.getLong(ResourceManagerOptions.SLOT_REQUEST_TIMEOUT));
+               final Time slotRequestTimeout = 
getSlotRequestTimeout(configuration);
                final Time taskManagerTimeout = Time.milliseconds(
                                
configuration.getLong(ResourceManagerOptions.TASK_MANAGER_TIMEOUT));
 
                return new SlotManagerConfiguration(rpcTimeout, 
slotRequestTimeout, taskManagerTimeout);
        }
+
+       private static Time getSlotRequestTimeout(final Configuration 
configuration) {
+               final long legacySlotRequestTimeoutMs = 
configuration.getLong(ResourceManagerOptions.SLOT_REQUEST_TIMEOUT);
+               final long slotRequestTimeoutMs;
+               if (legacySlotRequestTimeoutMs == 
ResourceManagerOptions.SLOT_REQUEST_TIMEOUT.defaultValue()) {
 
 Review comment:
   I think 
`configuration.contains(ResourceManagerOptions.SLOT_REQUEST_TIMEOUT)` would be 
more accurate because one could set this option accidentally to the default 
value.

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