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Hortonworks-Certified-Apache-Hadoop-2.0-Developer(Pig and Hive Developer) Sample Questions:

1. Given a directory of files with the following structure:
line number, tab character, string:
Example:
1 abialkjfjkaoasdfjksdlkjhqweroij
2 kadfjhuwqounahagtnbvaswslmnbfgy
3 kjfteiomndscxeqalkzhtopedkfsikj
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) KeyValueFileInputFormat
B) SequenceFileAsTextInputFormat
C) BDBInputFormat
D) SequenceFileInputFormat

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

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

3. You wrote a map function that throws a runtime exception when it encounters a control character in input
data. The input supplied to your mapper contains twelve such characters totals, spread across five file
splits. The first four file splits each have two control characters and the last split has four control
characters.
Indentify the number of failed task attempts you can expect when you run the job with
mapred.max.map.attempts set to 4:

A) You will have seventeen failed task attempts
B) You will have twelve failed task attempts
C) You will have twenty failed task attempts
D) You will have five failed task attempts
E) You will have forty-eight failed task attempts

4. Identify the tool best suited to import a portion of a relational database every day as files into HDFS, and
generate Java classes to interact with that imported data?

A) fuse-dfs
B) Sqoop
C) Oozie
D) Hive
E) Hue
F) Pig
G) Flume

5. Given the following Pig command:
logevents = LOAD 'input/my.log' AS (date:chararray, levehstring, code:int, message:string);
Which one of the following statements is true?

A) The logevents relation represents the data from the my.log file, using a tab as the parsing delimiter
B) The statement is not a valid Pig command
C) The logevents relation represents the data from the my.log file, using a comma as the parsing delimiter
D) The first field of logevents must be a properly-formatted date string or table return an error

Solutions: