COMPUTER SCIENCE AND ENGINEERING
CLOUD COMPUTING
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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JobTracker
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TaskTracker
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TaskScheduler
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None of the mentioned
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Detailed explanation-1: -The TaskTracker executes the Mapper/ Reducer task as a child process in a separate jvm. The child-task inherits the environment of the parent TaskTracker. The user can specify additional options to the child-jvm via the mapred.
Detailed explanation-2: -Job − A program is an execution of a Mapper and Reducer across a dataset. Task − An execution of a Mapper or a Reducer on a slice of data.
Detailed explanation-3: -A TaskTracker is a slave node daemon in the cluster that accepts tasks (Map, Reduce and Shuffle operations) from a JobTracker.
Detailed explanation-4: -Explanation: JobTracker : Schedules jobs and tracks the assign jobs to Task tracker. 6. Which of the following is used for an execution of a Mapper or a Reducer on a slice of data? Explanation: Task : An execution of a Mapper or a Reducer on a slice of data.