Daily Archives: October 2, 2014

Hadoop Interview Questions and Answers Part – 5 1

Below are some of the hadoop interview questions and answers. 1. As the data is replicated thrice in HDFS, does it mean that any calculation done on one node will also be replicated on the other two? Since there are 3 nodes, when we send the MapReduce programs, calculations will be done only on the original data. The master node will know which node exactly has that particular data. In […]