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Question ID 20607

Which daemon spawns child JVMs to perform MapReduce processing?

Option A

JobTracker

Option B

NameNode

Option C

DataNode

Option D

TaskTracker

Option E

Secondary NameNode

Correct Answer D
Explanation Reference: http://www.mindmeister.com/75831919/hadoop-talk-nathan-milford-outbrain (search Task Tracker)


Question ID 20608

For each job, the Hadoop framework generates task log files. Where are these log files
stored?

Option A

On the local disk of the slave node running the task.

Option B

In HDFS, in the directory of the user who generates the job.

Option C

On the local disk of the slave node running the task, then copied into HDFS.

Option D

On the local disk of the slave node running the task, but logs are discarded immediately upon task completion.

Correct Answer A
Explanation

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