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

1. Which Hadoop component is responsible for managing the distributed file system metadata?

A) NameSpaceManager
B) NameNode
C) DataNode
D) Metanode

2. Given a directory of files with the following structure: line number, tab character, string:
Example:
1abialkjfjkaoasdfjksdlkjhqweroij
2kadfjhuwqounahagtnbvaswslmnbfgy
3kjfteiomndscxeqalkzhtopedkfsikj
You want to send each line as one record to your Mapper. Which InputFormat should you use to complete the line: conf.setInputFormat (____.class) ; ?

A) BDBInputFormat
B) SequenceFileAsTextInputFormat
C) SequenceFileInputFormat
D) KeyValueFileInputFormat

3. Which HDFS command displays the contents of the file x in the user's HDFS home directory?

A) hadoop fs -cat x
B) hdfs fs -get x
C) hadoop fs -cp x
D) hadoop fs -Is x

4. All keys used for intermediate output from mappers must:

A) Implement a splittable compression algorithm.
B) Be a subclass of FileInputFormat.
C) Override isSplitable.
D) Implement WritableComparable.
E) Implement a comparator for speedy sorting.

5. What is the term for the process of moving map outputs to the reducers?

A) Reducing
B) Shuffling and sorting
C) Combining
D) Partitioning

Solutions: