Github user StefanRRichter commented on a diff in the pull request:

    https://github.com/apache/flink/pull/5239#discussion_r168168472
  
    --- Diff: 
flink-contrib/flink-statebackend-rocksdb/src/main/java/org/apache/flink/contrib/streaming/state/RocksDBStateBackend.java
 ---
    @@ -686,4 +714,53 @@ static void resetRocksDBLoadedFlag() throws Exception {
                initField.setAccessible(true);
                initField.setBoolean(null, false);
        }
    +
    +   /**
    +    * This enum represents the different modes for local recovery.
    +    */
    +   public enum LocalRecoveryMode {
    +           DISABLED, ENABLE_FILE_BASED
    +   }
    +
    +   /**
    +    * This class encapsulates the configuration for local recovery of this 
backend.
    +    */
    +   public static final class LocalRecoveryConfig implements Serializable {
    +
    +           private static final long serialVersionUID = 1L;
    +           private static final LocalRecoveryConfig DISABLED_SINGLETON =
    +                   new LocalRecoveryConfig(LocalRecoveryMode.DISABLED, 
null);
    +
    +           private final LocalRecoveryMode localRecoveryMode;
    +           private final File localStateDirectory;
    +
    +           LocalRecoveryConfig(LocalRecoveryMode localRecoveryMode, File 
localStateDirectory) {
    --- End diff --
    
    This is changed in later commits.


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