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

1. What does Pig provide to the overall Hadoop solution?

A) C++ interface to MapReduce and data warehouse infrastructure
B) Legacy language Integration with MapReduce framework
C) Database table and storage management services
D) Simple scripting language for writing MapReduce programs

2. A combiner reduces:

A) The amount of intermediate data that must be transferred between the mapper and reducer.
B) The number of input files a mapper must process.
C) The number of output files a reducer must produce.
D) The number of values across different keys in the iterator supplied to a single reduce method call.

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

4. Review the following 'data' file and Pig code.

Which one of the following statements is true?

A) The code executes successfully but there is not output because the D relation is empty
B) The output of the dump d command is (M, {(38,95in),(62,95i02)})
C) The Output Of the DUMP D command IS (M,{(M,62.95102),(M,38,95111)})
D) The code does not execute successfully because D is not a valid relation

5. You use the hadoop fs -put command to write a 300 MB file using and HDFS block size of 64 MB. Just after this command has finished writing 200 MB of this file, what would another user see when trying to access this life?

A) They would see Hadoop throw an ConcurrentFileAccessException when they try to access this file.
B) They would see the current state of the file, up to the last bit written by the command.
C) They would see the current of the file through the last completed block.
D) They would see no content until the whole file written and closed.

Solutions: