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BigData / Hadoop MapReduce

Explain The MapReduce process.

MapReduce has two main processes.

  • Job Tracker (Master).
  • Task tracker (Slave).

JobTracker Manages the overall MapReduce process in Hadoop Ecosystem. The main function of Job tracker is to manage resources and also it monitors the progress and status of the TaskTrackers.

Task Tracker processes the task assigned by JobTracker. TaskTracker also post its update to the JobTracker to notify about the status of task and the available free slots.

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