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

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

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

2. What does the following command do?
register '/piggyban):/pig-files.jar';

A) Assigns a name to a user-defined function or streaming command
B) Specifies the location of the JAR file containing the user-defined functions
C) Invokes the user-defined functions contained in the jar file
D) Transforms Pig user-defined functions into a format that Hive can accept

3. 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) Flume
B) Sqoop
C) mapred
D) Oozie
E) Hadoop Streaming

4. To use a lava user-defined function (UDF) with Pig what must you do?

A) Put the JAR file into the user's home folder in HDFS
B) Define an alias to shorten the function name
C) Pass arguments to the constructor of UDFs implementation class
D) Register the JAR file containing the UDF

5. Analyze each scenario below and indentify which best describes the behavior of the default partitioner?

A) The default partitioner implements a round-robin strategy, shuffling the key-value pairs to each reducer in turn. This ensures an event partition of the key space.
B) The default partitioner computes the hash of the value and takes the mod of that value with the number of reducers. The result determines the reducer assigned to process the key-value pair.
C) The default partitioner computes the hash of the key. Hash values between specific ranges are associated with different buckets, and each bucket is assigned to a specific reducer.
D) The default partitioner computes the hash of the key and divides that valule modulo the number of reducers. The result determines the reducer assigned to process the key-value pair.
E) The default partitioner assigns key-values pairs to reduces based on an internal random number generator.

Solutions: