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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

Which of the following tool was designed to import data from a relational database into HDFS?

A. HCatalog
B. Ambari
C. Sqoop
D. Flume

Question 2

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. Partitioner
B. Combiner
C. OutputFormat
D. InputFormat
E. WritableComparable
F. Writable

Question 3

What is the term for the process of moving map outputs to the reducers?

A. Shuffling and sorting
B. Combining
C. Partitioning
D. Reducing

Question 4

You are developing a combiner that takes as input Text keys, IntWritable values, and emits Text keys,
IntWritable values. Which interface should your class implement?

A. Reducer <Text, Text, IntWritable, IntWritable>
B. Mapper <Text, IntWritable, Text, IntWritable>
C. Reducer <Text, IntWritable, Text, IntWritable>
D. Combiner <Text, IntWritable, Text, IntWritable>
E. Combiner <Text, Text, IntWritable, IntWritable>

Question 5

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.

Solutions: