This task is to revisit the configurations to make SPS service modes - internal/external/none
- internal : represents SPS service will be running with NN
- external: represents SPS service will be running outside NN
- none: represents the SPS service is completely disabled and zero cost to the system.
Proposed configuration dfs.storage.policy.satisfier.mode item in hdfs-site.xml file and value will be string. The mode can be changed via reconfig command.