This post shows a Java program to write a file in HDFS using the Hadoop FileSystem API. Steps for writing a file in HDFS using Java are as follows- FileSystem is an abstraction of file system of which HDFS is one implementation. So you will have to get an instance of…
As per the replica placement policy in Hadoop each HDFS block is replicated across different nodes. Default replication factor is 3 which means by default each HDFS block is replicated on three different nodes in order to make HDFS reliable and fault tolerant. Considerations for HDFS replica placement policy When…
Apache Hadoop is an open source framework for storing data and processing of data set of big data on a cluster of nodes (commodity hardware) in parallel. Hadoop framework is designed to scale up from single server to thousand of machines with each machine offering both storage and computation. It…
