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

1. You have the following key-value pairs as output from your Map task:
(the, 1) (fox, 1) (faster, 1) (than, 1) (the, 1) (dog, 1)
How many keys will be passed to the Reducer's reduce method?

A) Three
B) One
C) Four
D) Six
E) Five
F) Two

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

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

3. Which best describes how TextInputFormat processes input files and line breaks?

A) The input file is split exactly at the line breaks, so each RecordReader will read a series of complete lines.
B) Input file splits may cross line breaks. A line that crosses file splits is ignored.
C) Input file splits may cross line breaks. A line that crosses file splits is read by the RecordReader of the split that contains the end of the broken line.
D) Input file splits may cross line breaks. A line that crosses file splits is read by the RecordReader of the split that contains the beginning of the broken line.
E) Input file splits may cross line breaks. A line that crosses file splits is read by the RecordReaders of both splits containing the broken line.

4. You have a directory named jobdata in HDFS that contains four files: _first.txt, second.txt, .third.txt and #data.txt. How many files will be processed by the FileInputFormat.setInputPaths () command when it's given a path object representing this directory?

A) Two, file names with a leading period or underscore are ignored
B) Four, all files will be processed
C) Three, the pound sign is an invalid character for HDFS file names
D) None, the directory cannot be named jobdata
E) One, no special characters can prefix the name of an input file

5. Which one of the following statements describes the relationship between the NodeManager and the ApplicationMaster?

A) The ApplicationMaster starts the NodeManager outside of a Container
B) The NodeManager creates an instance of the ApplicationMaster
C) The ApplicationMaster starts the NodeManager in a Container
D) The NodeManager requests resources from the ApplicationMaster

Solutions: