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Question ID 20587

For a MapReduce job, what's the relationship between tasks and task attempts?

Option A

There are always exactly as many task attempts as there are tasks.

Option B

 There are always at least as many task attempts as there are tasks.

Option C

There are always at most as many task attempts as there are tasks.

Correct Answer B
Explanation


Question ID 20588

Hadoop provider web interface can be used for all of the following EXCEPT: (choose 1)

Option A

Keeping track of the number of files and directories stored in HDFS.

Option B

Keeping track of jobs running on the cluster.

Option C

 Browsing files in HDFS.

Option D

 Keeping track of tasks running on each individual slave node.

Option E

Keeping track of processor and memory utilization on each individual slave node.

Correct Answer D
Explanation

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