When i start my service using cloudera manger UI . its automatically done changes in some configuration parameters of particular service . for example when i start YARN service using cloudera Manger UI it changes Java Heap Size of Resource Manger and Node Manager . but when i tried to run "YARN" using cloudera manager API it doest not change this parameter and i think its use a default configuartion parameter , sometime its also show error like " cannot allocate particular amount of memory" . and after manually doing chnages in Java Heap Size of Resource Manger and Node Manager , service started succefully
is this a default behavior of cloudera manger API and its a Developer/Admin responsibility to set all the configuration parameter ?