zhuzhurk commented on a change in pull request #8912: [FLINK-12709] [runtime] 
Implement new generation restart strategy loader which also respects legacy…
URL: https://github.com/apache/flink/pull/8912#discussion_r323598464
 
 

 ##########
 File path: 
flink-core/src/main/java/org/apache/flink/configuration/RestartBackoffTimeStrategyOptions.java
 ##########
 @@ -25,6 +25,16 @@
  */
 @PublicEvolving
 public class RestartBackoffTimeStrategyOptions {
+
+       /**
+        * Class name of the RestartBackoffTimeStrategy implementation to use.
+        */
+       @PublicEvolving
+       public static final ConfigOption<String> 
RESTART_BACKOFF_TIME_STRATEGY_CLASS_NAME = ConfigOptions
+               .key("restart-backoff-time-strategy.class-name")
 
 Review comment:
   Yes it is a breaking change if a user was using a custom RestartStrategy.
   I will open a discussion to
   1. notify users that previous custom RestartStrategy does not work in the 
new scheduler anymore
   2. discuss whether we should keep supporting custom 
RestartBackoffTimeStrategy for existing custom RestartStrategy migration or 
future use

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