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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. […]
July 3, 2015

How to change default replication factor?

How to change default replication factor?   What Is Replication Factor? Replication factor dictates how many copies of a block should be kept in your cluster. […]
June 25, 2015

How to change default block size in HDFS

How to change default block size in HDFS? In this post we are going to see how to upload a file to HDFS overriding the default […]