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

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

2. Which HDFS command copies an HDFS file named foo to the local filesystem as localFoo?

A) hadoop fs -Is foo
B) hadoop -cp foo LocalFoo
C) hadoop fs -get foo LocalFoo
D) hadoop fs -put foo LocalFoo

3. Given the following Hive command:

Which one of the following statements is true?

A) The files in the mydata folder do not move from their current location In HDFS
B) The files in the mydata folder are moved to a subfolder of /apps/hive/wa re house
C) The files in the mydata folder are copied to a subfolder of /apps/hlve/warehouse
D) The files in the mydata folder are copied into Hive's underlying relational database

4. Which one of the following statements is false about HCatalog?

A) Designed to be used by other programs such as Pig, Hive and MapReduce
B) Stores HDFS data in a database for performing SQL-like ad-hoc queries
C) Provides a shared schema mechanism
D) Exists as a subproject of Hive

5. Consider the following two relations, A and B.

A Pig JOIN statement that combined relations A by its first field and B by its second field would produce what output?

A) 2 cherry 2 cherry 3 orange 4 peach
B) 2 cherry Jim 2 2 cherry Chris 2 3 orange Terry 3 4 peach Brian 4
C) 2 Jim Chris 2 3 Terry 3 4 Brian 4
D) 2 cherry Jim, Chris 3 orange Terry 4 peach Brian

Solutions: