Multiple Choice
You have just run a MapReduce job to filter user messages to only those of a selected geographical region. The output for this job is in a directory named westUsers, located just below your home directory in HDFS. Which command gathers these into a single file on your local file system?
A) Hadoop fs -getmerge -R westUsers.txt
B) Hadoop fs -getemerge westUsers westUsers.txt
C) Hadoop fs -cp westUsers/* westUsers.txt
D) Hadoop fs -get westUsers westUsers.txt
Correct Answer:

Verified
Correct Answer:
Verified
Q11: You are running a Hadoop cluster with
Q12: Assuming a cluster running HDFS, MapReduce version
Q13: A slave node in your cluster has
Q14: What does CDH packaging do on install
Q15: Which process instantiates user code, and executes
Q17: Which scheduler would you deploy to ensure
Q18: You are working on a project where
Q19: What two processes must you do if
Q20: Your cluster implements HDFS High Availability (HA).
Q21: Choose three reasons why should you run