get the app get the app       get the app       get the app
How does fault tolerance work in mapreduce?

  • : 198
  • : 8
    Previous Next

    In a mapreduce job the master pings each worker periodically. In case a worker does not respond to that system then the system is marked as failed. Even completed tasks are rescheduled because the output was stored in a in a local disk of a worker which failed. Hence mapreduce is able to handle large-scale failures easily by simply restarting a task. The master node always saves itself at checkpoints and in case of any failure it simply restarts from that checkpoint.

    you can suggest other answer in comment box

  • Exam: Cloud Computing QUESTIONS

    Subscribe here for free mock test on IAS PCS SSC and other competitive exam. Signup here to get SSC CGL Solution and main exam study material