Hadoop Tutorial: Intro to HDFS

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In this presentation, Sameer Farooqui is going to introduce the Hadoop Distributed File System, an Apache open source distributed file system designed to run on commodity hardware.

He’ll cover:

  • Origins of HDFS and Google File System / GFS
  • How a file breaks up into blocks before being distributed to a cluster
  • NameNode and DataNode basics
  • Technical architecture of HDFS
  • Sample HDFS commands
  • Rack Awareness
  • Synchronous write pipeline
  • How a client reads a file