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

1. What is the disadvantage of using multiple reducers with the default HashPartitioner and distributing your workload across you cluster?

A) You will longer be able to take advantage of a Combiner.
B) By using multiple reducers with the default HashPartitioner, output files may not be in globally sorted order.
C) There are no concerns with this approach. It is always advisable to use multiple reduces.
D) You will not be able to compress the intermediate data.

2. Which two of the following are true about this trivial Pig program' (choose Two)

A) The contents of myfile appear on stdout
B) Pig assumes the contents of myfile are comma delimited
C) myfile is read from the user's home directory in HDFS
D) ABC has a schema associated with it

3. Examine the following Hive statements:

Assuming the statements above execute successfully, which one of the following statements is true?

A) The contents of File1 are parsed as comma-delimited rows and loaded into /user/joe/x/
B) The contents of File1 are parsed as comma-delimited rows and stored in a database
C) The file named File1 is moved to to/user/joe/x/
D) Hive reformats File1 into a structure that Hive can access and moves into to/user/joe/x/

4. Identify the MapReduce v2 (MRv2 / YARN) daemon responsible for launching application containers and monitoring application resource usage?

A) JobTracker
B) NodeManager
C) TaskTracker
D) ApplicationMasterService
E) ResourceManager
F) ApplicationMaster

5. You have a directory named jobdata in HDFS that contains four files: _first.txt, second.txt, .third.txt and #data.txt. How many files will be processed by the FileInputFormat.setInputPaths () command when it's given a path object representing this directory?

A) Three, the pound sign is an invalid character for HDFS file names
B) None, the directory cannot be named jobdata
C) One, no special characters can prefix the name of an input file
D) Two, file names with a leading period or underscore are ignored
E) Four, all files will be processed

Solutions: