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

1. Which one of the following statements describes a Pig bag. tuple, and map, respectively?

A) Unordered collection of tuples, ordered set of fields, set of key value pairs
B) Ordered collection of maps, ordered collection of bags, and unordered set of key/value pairs
C) Unordered collection of maps, ordered collection of tuples, ordered set of key/value pairs
D) Ordered set of fields, ordered collection of tuples, ordered collection of maps

2. Assuming the following Hive query executes successfully:

Which one of the following statements describes the result set?

A) An 80-value ngram of sentences that contain the words "you" or "are" in the lines column of the
inputdata table.
B) A frequency distribution of the top 80 words that follow the subsequence "you are" in the lines column
of the inputdata table.
C) A bigram of the top 80 sentences that contain the substring "you are" in the lines column of the input
data A1 table.
D) A trigram of the top 80 sentences that contain "you are" followed by a null space in the lines column of
the inputdata table.

3. Examine the following Hive statements:

Assuming the statements above execute successfully, which one of the following statements is true?

A) Each reducer generates a file sorted by age
B) The SORT BY command causes only one reducer to be used
C) The output is guaranteed to be a single file with all the data sorted by age
D) The output of each reducer is only the age column

4. 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

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

A) It depends on the InputFormat used for the job.
B) Not until all mappers have finished processing all records.
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: