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Hortonworks Apache-Hadoop-Developer Exam Syllabus Topics:

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

1. Consider the following two relations, A and B.

A Pig JOIN statement that combined relations A by its first field and B by its second field would produce what output?

A) 2 cherry 2 cherry 3 orange 4 peach
B) 2 Jim Chris 2 3 Terry 3 4 Brian 4
C) 2 cherry Jim, Chris 3 orange Terry 4 peach Brian
D) 2 cherry Jim 2 2 cherry Chris 2 3 orange Terry 3 4 peach Brian 4

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

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

3. For each input key-value pair, mappers can emit:

A) As many intermediate key-value pairs as designed. There are no restrictions on the types of those key-value pairs (i.e., they can be heterogeneous).
B) One intermediate key-value pair, but of the same type.
C) One intermediate key-value pair, of a different type.
D) As many intermediate key-value pairs as designed, but they cannot be of the same type as the input key-value pair.
E) As many intermediate key-value pairs as designed, as long as all the keys have the same types and all the values have the same type.

4. Identify the tool best suited to import a portion of a relational database every day as files into HDFS, and generate Java classes to interact with that imported data?

A) Sqoop
B) Flume
C) Hue
D) fuse-dfs
E) Oozie
F) Hive
G) Pig

5. Assuming default settings, which best describes the order of data provided to a reducer's reduce method:

A) Both the keys and values passed to a reducer always appear in sorted order.
B) The keys given to a reducer aren't in a predictable order, but the values associated with those keys always are.
C) Neither keys nor values are in any predictable order.
D) The keys given to a reducer are in sorted order but the values associated with each key are in no predictable order

Solutions: