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Hortonworks Apache-Hadoop-Developer Exam Syllabus Topics:

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

1. Which one of the following Hive commands uses an HCatalog table named x?

A) SELECT * FROM org.apache.hcatalog.hive.HCatLoader('x');
B) SELECT * FROM x;
C) SELECT x.-FROM org.apache.hcatalog.hive.HCatLoader('x');
D) Hive commands cannot reference an HCatalog table

2. To process input key-value pairs, your mapper needs to lead a 512 MB data file in memory. What is the best way to accomplish this?

A) Place the data file in the DataCache and read the data into memory in the configure method of the mapper.
B) Place the data file in the DistributedCache and read the data into memory in the configure method of the mapper.
C) Place the data file in the DistributedCache and read the data into memory in the map method of the mapper.
D) Serialize the data file, insert in it the JobConf object, and read the data into memory in the configure method of the mapper.

3. In Hadoop 2.0, which TWO of the following processes work together to provide automatic failover of the NameNode? Choose 2 answers

A) JournalNode
B) ZooKeeper
C) ZKFailoverController
D) QuorumManager

4. Which one of the following statements describes the relationship between the ResourceManager and the ApplicationMaster?

A) The ApplicationMaster starts a single instance of the ResourceManager
B) The ApplicationMaster starts an instance of the ResourceManager within each Container
C) The ApplicationMaster requests resources from the ResourceManager
D) The ResourceManager monitors and restarts any failed Containers of the ApplicationMaster

5. Examine the following Hive statements:

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

A) The SORT BY command causes only one reducer to be used
B) The output is guaranteed to be a single file with all the data sorted by age
C) Each reducer generates a file sorted by age
D) The output of each reducer is only the age column

Solutions: