code: public String[] getDbStoragePaths() {
  		if (localRocksDbDirectories == null) {
  			return null;
  		} else {
  			String[] paths = new String[localRocksDbDirectories.length];
  			for (int i = 0; i < paths.length; i++) {
  				paths[i] = localRocksDbDirectories[i].toString();
  			}
  			return paths;
  		}
  	}
docs: Gets the configured local DB storage paths, or null, if none were configured.
  
  <p>Under these directories on the TaskManager, RocksDB stores its SST files and
  metadata files. These directories do not need to be persistent, they can be ephermeral,
  meaning that they are lost on a machine failure, because state in RocksDB is persisted
  in checkpoints.
  
  <p>If nothing is configured, these directories default to the TaskManager's local
  temporary file directories.