code: public void deleteShard(ApplicationDefinition appDef, String shard) {
          checkServiceState();
          m_olap.deleteShard(appDef, shard);
      }
docs: Delete the shard for the given application, including all of its data. This method
  is a no-op if the given shard does not exist or has no data.
  
  @param appDef    {@link ApplicationDefinition} of application.
  @param shard     Shard name.