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

1. Your client application submits a MapReduce job to your Hadoop cluster. Identify the Hadoop daemon on which the Hadoop framework will look for an available slot schedule a MapReduce operation.

A) Secondary NameNode
B) DataNode
C) NameNode
D) TaskTracker
E) JobTracker

2. Indentify the utility that allows you to create and run MapReduce jobs with any executable
or script as the mapper and/or the reducer?

A) Sqoop
B) mapred
C) Hadoop Streaming
D) Oozie
E) Flume

3. You have written a Mapper which invokes the following five calls to the OutputColletor.collect method:
output.collect (new Text ("Apple"), new Text ("Red") ) ;
output.collect (new Text ("Banana"), new Text ("Yellow") ) ;
output.collect (new Text ("Apple"), new Text ("Yellow") ) ;
output.collect (new Text ("Cherry"), new Text ("Red") ) ;
output.collect (new Text ("Apple"), new Text ("Green") ) ;
How many times will the Reducer's reduce method be invoked?

A) 0
B) 3
C) 1
D) 6
E) 5

4. Which TWO of the following statements are true regarding Hive? Choose 2 answers

A) Allows you to define a structure for your unstructured Big Data
B) Is a relational database
C) Useful for data analysts familiar with SQL who need to do ad-hoc queries
D) Offers real-time queries and row level updates

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

Solutions: