public static UUID generateLegacyCfId(String ksName,String cfName){
  return UUID.nameUUIDFromBytes(ArrayUtils.addAll(ksName.getBytes(),cfName.getBytes()));
}

public static UUID generateLegacyCfId ( String ksName , String cfName ) { return UUID . nameUUIDFromBytes ( ArrayUtils . addAll ( ksName . getBytes ( ) , cfName . getBytes ( ) ) ) ; }
generates deterministic uuid from keyspace / columnfamily name pair . this is used to generate the same uuid for c * version < 2 . 1 since 2 . 1 , this is only used for system columnfamilies and tests .
