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Hortonworks Hadoop 2.0 Certification exam for Pig and Hive Developer Sample Questions:

1. You have the following key-value pairs as output from your Map task:
(the, 1) (fox, 1) (faster, 1) (than, 1) (the, 1) (dog, 1)
How many keys will be passed to the Reducer's reduce method?

A) Five
B) One
C) Two
D) Six
E) Three
F) Four

2. To process input key-value pairs, your mapper needs to lead a 512 MB data file in memory. What is the best way to accomplish this?

A) Place the data file in the DistributedCache and read the data into memory in the configure method of the mapper.
B) Serialize the data file, insert in it the JobConf object, and read the data into memory in the configure method of the mapper.
C) Place the data file in the DistributedCache and read the data into memory in the map method of the mapper.
D) Place the data file in the DataCache and read the data into memory in the configure method of the mapper.

3. Which two of the following are true about this trivial Pig program' (choose Two)

A) ABC has a schema associated with it
B) The contents of myfile appear on stdout
C) myfile is read from the user's home directory in HDFS
D) Pig assumes the contents of myfile are comma delimited

4. Identify the MapReduce v2 (MRv2 / YARN) daemon responsible for launching application containers and monitoring application resource usage?

A) ResourceManager
B) NodeManager
C) ApplicationMasterService
D) TaskTracker
E) JobTracker
F) ApplicationMaster

5. MapReduce v2 (MRv2/YARN) splits which major functions of the JobTracker into separate
daemons? Select two.

A) Managing file system metadata
B) Managing tasks
C) Job scheduling/monitoring
D) Resource management
E) MapReduce metric reporting
F) Launching tasks
G) Job coordination between the ResourceManager and NodeManager
H) Heath states checks (heartbeats)

Solutions: