[state.checkpoints.num-retained ]The default value does not take effect

[chenqizhu]

hi,
   
   The configration is valid only when I specify -Dstate.cache. num-retained=n 
by command line interface.
   If I do not specify this configuration, the default value does not take 
effect , is it a bug ?


   my flink version : flink-1.13.3