Hortonworks-Certified-Apache-Hadoop-2.0-Developer(Pig and Hive Developer) : HADOOP-PR000007

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Hortonworks HADOOP-PR000007 Exam Syllabus Topics:

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

Question 1

For each intermediate key, each reducer task can emit:

A. One final key-value pair per value associated with the key; no restrictions on the type.
B. One final key-value pair per key; no restrictions on the type.
C. As many final key-value pairs as desired. There are no restrictions on the types of those key-value
pairs (i.e., they can be heterogeneous).
D. As many final key-value pairs as desired, but they must have the same type as the intermediate
key-value pairs.
E. As many final key-value pairs as desired, as long as all the keys have the same type and all the values
have the same type.

Question 2

Given a directory of files with the following structure:
line number, tab character, string:
Example:
1 abialkjfjkaoasdfjksdlkjhqweroij
2 kadfjhuwqounahagtnbvaswslmnbfgy
3 kjfteiomndscxeqalkzhtopedkfsikj
You want to send each line as one record to your Mapper. Which InputFormat should you use to complete
the line: conf.setInputFormat (____.class) ; ?

A. KeyValueFileInputFormat
B. BDBInputFormat
C. SequenceFileAsTextInputFormat
D. SequenceFileInputFormat

Question 3

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

Question 4

What are the TWO main components of the YARN ResourceManager process? Choose 2 answers

A. Job Tracker
B. Applications Manager
C. Scheduler
D. Task Tracker

Question 5

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

Solutions: