EMERGING TRENDS IN SOFTWARE ENGINEERING
CLOUD COMPUTING
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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True
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False
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Either A or B
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None of the above
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Detailed explanation-1: -The main duties of task tracker are to break down the receive job that is big computations in small parts, allocate the partial computations that is tasks to the slave nodes monitoring the progress and report of task execution from the slave.
Detailed explanation-2: -Which of the following statements are true about key/value pairs in Hadoop? A map() function can emit up to a maximum number of key/value pairs (depending on the Hadoop environment). A map() function can emit anything between zero and an unlimited number of key/value pairs.
Detailed explanation-3: -For which of the following operations is NO communication with the NameNode required? A client writing a file to HDFS.
Detailed explanation-4: -There is only One Task Tracker process run on any hadoop slave node.