sokui

Hi @xBis7 , we should not deprecate dfs.datanode.use.datanode.hostname and always make it as false. This flag is also used by the users who deploy ozone to ip changing environment such...

> Thanks @sokui for your comments. On the errors you mention that may happen when using the map for both ip and hostnames mapping to UUIDs of DNs, > >...

> > > Kill/ Restart one DN pod could change the IP. > > > > > > This works fine with the current approach. Any particular scenarios or test...