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Security in Hadoop

Security in Hadoop :

  • Apache Hadoop achieves security by using Kerberos.
  • At a high level, there are three steps that a client must take to access a service when using Kerberos. 
  • Thus, each of which involves a message exchange with a server.
  • Authentication – The client authenticates itself to the authentication server. Then, receives a timestamped Ticket-Granting Ticket (TGT).
  • Authorization – The client uses the TGT to request a service ticket from the Ticket Granting Server.
  • Service Request – The client uses the service ticket to authenticate itself to the server.

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