dawidwys commented on a change in pull request #6711: [FLINK-9377] [core, state 
backends] Remove serializers from checkpoints
URL: https://github.com/apache/flink/pull/6711#discussion_r223315401
 
 

 ##########
 File path: 
flink-runtime/src/main/java/org/apache/flink/runtime/state/KeyedBackendSerializationProxy.java
 ##########
 @@ -44,7 +47,17 @@
  */
 public class KeyedBackendSerializationProxy<K> extends 
VersionedIOReadableWritable {
 
-       public static final int VERSION = 5;
+       public static final int VERSION = 6;
+
+       private static final Map<Integer, Integer> 
META_INFO_SNAPSHOT_FORMAT_VERSION_MAPPER = new HashMap<>();
+       static {
 
 Review comment:
   Do we need this map?

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