HDFS JAVA Hadoop API Overview




Hadoop API Introduction Hadoop API provides a Java native API to support file system operations such as create, rename or delete files and directories, open, read or write files, set permissions, etc. A very basic example can be found on Apache wiki about how to read and write files from Hadoop API. This is great for applications running within the […]

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Hadoop – HDFS Operations




Hadoop – HDFS Operations   we will see in this article about HDFS Operations that we usually needs for our job. Starting HDFS Initially you have to format the configured HDFS file system, open namenode (HDFS server), and execute the following command. $ hadoop namenode -format After formatting the HDFS, start the distributed file system. The following command will start […]

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Hadoop Distributed File System (HDFS) and MapReduce




The Hadoop Distributed File System (HDFS) HDFS is a fault tolerant and self-healing distributed file system designed to turn a cluster of industry standard servers into a massively scalable pool of storage. Developed specifically for large-scale data processing workloads where scalability, flexibility and throughput are critical, HDFS accepts data in any format regardless of schema, optimizes for high bandwidth streaming, […]

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