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

1. Workflows expressed in Oozie can contain:

A) Sequences of MapReduce job only; on Pig on Hive tasks or jobs. These MapReduce sequences can be combined with forks and path joins.
B) Iterntive repetition of MapReduce jobs until a desired answer or state is reached.
C) Sequences of MapReduce and Pig. These sequences can be combined with other actions including forks, decision points, and path joins.
D) Sequences of MapReduce and Pig jobs. These are limited to linear sequences of actions with exception handlers but no forks.

2. 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) NameNode
B) JobTracker
C) TaskTracker
D) DataNode
E) Secondary NameNode

3. How are keys and values presented and passed to the reducers during a standard sort and shuffle phase of MapReduce?

A) Keys are presented to reducer in sorted order; values for a given key are not sorted.
B) Keys are presented to a reducer in random order; values for a given key are not sorted.
C) Keys are presented to reducer in sorted order; values for a given key are sorted in ascending order.
D) Keys are presented to a reducer in random order; values for a given key are sorted in ascending order.

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

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

5. Examine the following Pig commands:

Which one of the following statements is true?

A) The reducers will only output the first 20% of the data passed from the mappers
B) The SAMPLE command generates an "unexpected symbol" error
C) A random sample of approximately 20% of the data will be output
D) Each MapReduce task will terminate after executing for 0.2 minutes

Solutions: