As the word says, single node will have only one node(machine/host) and multi-node will have more than one. Single Node: By default, Hadoop is configured to run in a non-distributed or standalone mode, as a single Java process. There are no daemons running and everything runs in a single JVM instance.
Give peeling nails a moisturizing assist by using a moisturizer with alpha-hydroxy acids or lactic acids before bedtime. Kathy Clement, M.D., a faculty doctor at University of Wyoming, advises donning cotton gloves afterward; this will help keep moisturizer in contact with fingernails.
A friend of mine put acrylic nails on to keep from biting them and to make them look nice. I don't have the problem of biting my nails, but I do bite off nail polish and the acrylic nails so I have to just leave them natural.