1.

Explain the actions followed by a Jobtracker in Hadoop.

Answer»
  • The client application is USED to submit the jobs to the Jobtracker.
  • The JobTracker associates with the NameNode to determine the data location.
  • With the help of AVAILABLE slots and the near the data, JobTracker LOCATES TASKTRACKER nodes.
  • It submits the work on the selected TaskTracker Nodes.
  • When a TASK fails, JobTracker notifies and decides the further steps.
  • JobTracker monitors the TaskTracker nodes.


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