Question
Name Job control options specified by MapReduce.
Answers
Since this framework supports chained operations wherein an input of one map job serves as the output for other, there is a need for job controls to govern these complex operations.

The various job control options are:

Job.submit() : to submit the job to the cluster and immediately return

Job.waitforCompletion(boolean) : to submit the job to the cluster and wait for its completion   Your Comment




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