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

1. You wrote a map function that throws a runtime exception when it encounters a control character in input
data. The input supplied to your mapper contains twelve such characters totals, spread across five file
splits. The first four file splits each have two control characters and the last split has four control
characters.
Indentify the number of failed task attempts you can expect when you run the job with
mapred.max.map.attempts set to 4:

A) You will have five failed task attempts
B) You will have twenty failed task attempts
C) You will have twelve failed task attempts
D) You will have forty-eight failed task attempts
E) You will have seventeen failed task attempts

2. Indentify which best defines a SequenceFile?

A) A SequenceFile contains a binary encoding of an arbitrary number of heterogeneous Writable objects
B) A SequenceFile contains a binary encoding of an arbitrary number of homogeneous Writable objects
C) A SequenceFile contains a binary encoding of an arbitrary number key-value pairs. Each key must be
the same type. Each value must be the same type.
D) A SequenceFile contains a binary encoding of an arbitrary number of WritableComparable objects, in
sorted order.

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

4. What is a SequenceFile?

A) A SequenceFile contains a binary encoding of an arbitrary number of heterogeneous writable objects.
B) A SequenceFile contains a binary encoding of an arbitrary number key-value pairs. Each key must be
the same type. Each value must be same type.
C) A SequenceFile contains a binary encoding of an arbitrary number of homogeneous writable objects.
D) A SequenceFile contains a binary encoding of an arbitrary number of WritableComparable objects, in
sorted order.

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

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

Solutions: