There is nothing sacred about electrons being called negative charge and protons positive charge.Itâs just a convention. You, can very well call electrons as positive charge and protons as negative charge!
Single Node or Psuedo-Distributed Cluster is the one in which all the essential daemons (like NameNode, DataNode, JobTracker and TaskTracker) run on the same machine. The default replication factor for a single node cluster is 1. A single node cluster is basically used to simulate a full cluster like environment and to test hadoop applications and unlike the Stand-alone mode, HDFS is accessible in this.
Wiktionary(4.80 / 5 votes)Rate this definition: 1  cluster(Noun) A group or bunch of several discrete items that are close to each other. 2  cluster(Noun) A group of galaxies or stars that appear near each other. 3  cluster(Noun) A secundal chord of three or more notes. 4  cluster(Noun) A group of consonants.