Hortonworks HCAHD Apache-Hadoop-Developer

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Hortonworks Apache-Hadoop-Developer Exam Syllabus Topics:

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

Question 1

MapReduce v2 (MRv2/YARN) is designed to address which two issues?

A. Ability to run frameworks other than MapReduce, such as MPI.
B. Standardize on a single MapReduce API.
C. Resource pressure on the JobTracker.
D. Single point of failure in the NameNode.
E. HDFS latency.
F. Reduce complexity of the MapReduce APIs.

Question 2

All keys used for intermediate output from mappers must:

A. Implement WritableComparable.
B. Implement a splittable compression algorithm.
C. Implement a comparator for speedy sorting.
D. Be a subclass of FileInputFormat.
E. Override isSplitable.

Question 3

Assuming the following Hive query executes successfully:

Which one of the following statements describes the result set?

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

Question 4

Consider the following two relations, A and B.

What is the output of the following Pig commands?
X = GROUP A BY S1; DUMP X;

A. Option D
B. Option C
C. Option A
D. Option B

Question 5

Given the following Hive command:

Which one of the following statements is true?

A. The files in the mydata folder are copied to a subfolder of /apps/hlve/warehouse
B. The files in the mydata folder are moved to a subfolder of /apps/hive/wa re house
C. The files in the mydata folder are copied into Hive's underlying relational database
D. The files in the mydata folder do not move from their current location In HDFS

Solutions: