namenode

Resolving the Failure Issue of NameNode

June 4, 2017June 8, 2018Big Data and Fast Data, HDFS, Studio-Scalaactive namenode, Hadoop, HDFS, hdfs cluster, namenode, passive namenode, standby machine, standby namenode

Reading Time: 2 minutes In the previous blog “Smattering of HDFS“, we learnt that “The NameNode is a Single Point of Failure for the HDFS Cluster”. Each cluster had a single NameNode and if that machine became unavailable, the whole cluster would become unavailable until the NameNode is restarted or brought up on a different machine. Now in this blog, we will learn about resolving the failure issue of Continue Reading

Smattering of HDFS

April 18, 2017June 8, 2018HDFSdatanode, goals of hdfs, HDFS, hdfs architecture, hdfs cluster, namenode

Reading Time: 2 minutes INTRODUCTION TO HDFS :- Hadoop is an open-source framework that allows to store and process big data in a distributed environment across clusters of computers.It has many similarities with existing distributed file systems. However, the differences from other distributed file systems are significant as it provides high-performance access to data across Hadoop clusters. Like other Hadoop-related technologies, HDFS has become a key tool for managing Continue Reading