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

1. You want to populate an associative array in order to perform a map-side join. You've decided to put this
information in a text file, place that file into the DistributedCache and read it in your Mapper before any
records are processed. Indentify which method in the Mapper you should use to implement code for
reading the file and populating the associative array?

A) combine
B) configure
C) map
D) init

2. A client application creates an HDFS file named foo.txt with a replication factor of 3. Identify which best
describes the file access rules in HDFS if the file has a single block that is stored on data nodes A, B and
C?

A) Each data node stores a copy of the file in the local file system with the same name as the HDFS file.
B) The file can be accessed if at least one of the data nodes storing the file is available.
C) The file will be marked as corrupted if data node B fails during the creation of the file.
D) Each data node locks the local file to prohibit concurrent readers and writers of the file.

3. You want to perform analysis on a large collection of images. You want to store this data in HDFS and
process it with MapReduce but you also want to give your data analysts and data scientists the ability to
process the data directly from HDFS with an interpreted high-level programming language like Python.
Which format should you use to store this data in HDFS?

A) CSV
B) XML
C) Avro
D) JSON
E) SequenceFiles
F) HTML

4. Review the following data and Pig code:

What command to define B would produce the output (M,62,95l02) when invoking the DUMP operator on
B?

A) B= GROUP A BY (zip = = '95102' AND gender = = 'M');
B) B = JOIN A BY (gender = = 'M' AND zip = = '95102');
C) B = FILTER A BY (zip = = '95102' AND gender = = M");
D) B= FOREACH A BY (gender = = 'M' AND zip = = '95102');

5. Which YARN component is responsible for monitoring the success or failure of a Container?

A) ResourceManager
B) NodeManager
C) ApplicationMaster
D) JobTracker

Solutions: