What Is Difference between Hadoop Name node Federation, NFS And Journal Node?

devquora
devquora

Posted On: Feb 22, 2018

 

 Here are some of the considerable differences:

    

  • HDFS is considered as a write-once file system so a client can’t update the files once they exist it is possible that they can read or write to it. But, under specific situations in the enterprise condition like uploading, downloading, file browsing or information streaming – it isn’t conceivable to accomplish such an excess of utilizing the standard HDFS. This is the place an appropriated file framework protocol Network File System (NFS) is utilized. NFS enables access to files on remote machines only like how the local file system is pervaded to by applications.
  • Name node is the core of the HDFS file framework that keeps up the metadata and tracks where the record data is kept over the Hadoop group.
  • Reserve Nodes and Active Nodes communicate with a group of lightweight nodes to keep their state synchronized. These are called Journal Nodes

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