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Hortonworks HADOOP-PR000007 Exam Syllabus Topics:

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

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

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

2. Which one of the following statements describes a Hive user-defined aggregate function?

A) Operates on a single input row and produces a single row as output
B) Operates on multiple input rows and produces a table as output
C) Operates on multiple input rows and creates a single row as output
D) Operates on a single input row and produces a table as output

3. Which one of the following statements is FALSE regarding the communication between DataNodes and a
federation of NameNodes in Hadoop 2.0?

A) DataNodes send periodic block reports to all the NameNodes.
B) Each DataNode registers with all the NameNodes.
C) Each DataNode receives commands from one designated master NameNode.
D) DataNodes send periodic heartbeats to all the NameNodes.

4. You are developing a MapReduce job for sales reporting. The mapper will process input keys
representing the year (IntWritable) and input values representing product indentifies (Text).
Indentify what determines the data types used by the Mapper for a given job.

A) The mapper-specification.xml file submitted with the job determine the mapper's input key and value
types.
B) The data types specified in HADOOP_MAP_DATATYPES environment variable
C) The InputFormat used by the job determines the mapper's input key and value types.
D) The key and value types specified in the JobConf.setMapInputKeyClass and
JobConf.setMapInputValuesClass methods

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

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

Solutions: