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July 28, 2015

Data Locality in Hadoop

Data Locality in Hadoop Data Locality in Hadoop refers to the “proximity” of the data with respect to the Mapper tasks working on the data. Why […]
July 19, 2015

Hadoop Modes

Hadoop Modes Hadoop cluster is made up of several key process and each process is designed to do a specific task. Here are the key daemons […]
July 14, 2015

JobTracker and TaskTracker

JobTracker and TaskTracker JobTracker and TaskTracker are 2 essential process involved in MapReduce execution in MRv1 (or Hadoop version 1). Both processes are now deprecated in […]
July 12, 2015

NameNode and DataNode

NameNode and DataNode In this post let’s talk about the 2 important types of nodes and it’s functions in your Hadoop cluster – NameNode and DataNode. […]