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

1. Given the following Hive command:
INSERT OVERWRITE TABLE mytable SELECT * FROM myothertable;
Which one of the following statements is true?

A) The contents of myothertable are appended to mytable
B) A new table named mytable is created, and the contents of myothertable are copied into mytable
C) The statement is not a valid Hive command
D) Any existing data in mytable will be overwritten

2. Which one of the following statements regarding the components of YARN is FALSE?

A) A Container executes a specific task as assigned by the ApplicationMaster
B) The ResourceManager monitors and restarts any failed Containers
C) A client application submits a YARW job to the ResourceManager
D) The ResourceManager is responsible for scheduling and allocating resources

3. What does the following WebHDFS command do?
Curl -1 -L "http://host:port/webhdfs/v1/foo/bar?op=OPEN"

A) Make a directory /foo/bar
B) Delete a directory /foo/bar
C) Read a file /foo/bar
D) List a directory /foo

4. You need to create a job that does frequency analysis on input data. You will do this by writing a Mapper that uses TextInputFormat and splits each value (a line of text from an input file) into individual characters. For each one of these characters, you will emit the character as a key and an InputWritable as the value. As this will produce proportionally more intermediate data than input data, which two resources should you expect to be bottlenecks?

A) Processor and disk I/O
B) Processor and RAM
C) Processor and network I/O
D) Disk I/O and network I/O

5. 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) Provides a shared schema mechanism
C) Exists as a subproject of Hive
D) Stores HDFS data in a database for performing SQL-like ad-hoc queries

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