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Hortonworks-Certified-Apache-Hadoop-2.0-Developer(Pig and Hive Developer) Sample Questions:

1. On a cluster running MapReduce v1 (MRv1), a TaskTracker heartbeats into the JobTracker on your
cluster, and alerts the JobTracker it has an open map task slot.
What determines how the JobTracker assigns each map task to a TaskTracker?

A) The average system load on the TaskTracker node over the past fifteen (15) minutes.
B) The number and speed of CPU cores on the TaskTracker node.
C) The amount of RAM installed on the TaskTracker node.
D) The location of the InsputSplit to be processed in relation to the location of the node.
E) The amount of free disk space on the TaskTracker node.

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

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

3. You have the following key-value pairs as output from your Map task:

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

4. Your client application submits a MapReduce job to your Hadoop cluster. Identify the Hadoop daemon on
which the Hadoop framework will look for an available slot schedule a MapReduce operation.

A) Secondary NameNode
B) DataNode
C) NameNode
D) JobTracker
E) TaskTracker

5. When is the earliest point at which the reduce method of a given Reducer can be called?

A) Not until all mappers have finished processing all records.
B) It depends on the InputFormat used for the job.
C) As soon as at least one mapper has finished processing its input split.
D) As soon as a mapper has emitted at least one record.

Solutions: