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Hortonworks HADOOP-PR000007 Exam Syllabus Topics:

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

1. You've written a MapReduce job that will process 500 million input records and generated 500 million
key-value pairs. The data is not uniformly distributed. Your MapReduce job will create a significant
amount of intermediate data that it needs to transfer between mappers and reduces which is a potential
bottleneck. A custom implementation of which interface is most likely to reduce the amount of
intermediate data transferred across the network?

A) InputFormat
B) WritableComparable
C) Combiner
D) OutputFormat
E) Partitioner
F) Writable

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

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

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

4. Which HDFS command copies an HDFS file named foo to the local filesystem as localFoo?

A) hadoop -cp foo LocalFoo
B) hadoop fs -put foo LocalFoo
C) hadoop fs -get foo LocalFoo
D) hadoop fs -Is foo

5. You have user profile records in your OLPT database, that you want to join with web logs you have
already ingested into the Hadoop file system. How will you obtain these user records?

A) HDFS command
B) Hive LOAD DATA command
C) Sqoop import
D) Pig LOAD command
E) Ingest with Flume agents
F) Ingest with Hadoop Streaming

Solutions: