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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. You have just executed a MapReduce job. Where is intermediate data written to after being emitted from the Mapper's map method?

A) Into in-memory buffers that spill over to the local file system (outside HDFS) of the TaskTracker node running the Reducer
B) Intermediate data in streamed across the network from Mapper to the Reduce and is never written to disk.
C) Into in-memory buffers on the TaskTracker node running the Mapper that spill over and are written into HDFS.
D) Into in-memory buffers that spill over to the local file system of the TaskTracker node running the Mapper.
E) Into in-memory buffers on the TaskTracker node running the Reducer that spill over and are written into HDFS.

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

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

3. 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 A
B) Option B
C) Option D
D) Option C

4. 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 trigram of the top 80 sentences that contain "you are" followed by a null space in the lines column of the inputdata table.
D) A bigram of the top 80 sentences that contain the substring "you are" in the lines column of the input data A1 table.

5. Which one of the following is NOT a valid Oozie action?

A) mapreduce
B) mrunit
C) hive
D) pig

Solutions: