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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. Given the following Hive commands:

Which one of the following statements Is true?

A) The file mydata.txt is copied to a subfolder of /apps/hive/warehouse
B) The file mydata.txt is moved to a subfolder of /apps/hive/warehouse
C) The file mydata.txt is copied into Hive's underlying relational database 0.
D) The file mydata.txt does not move from Its current location in HDFS

2. Consider the following two relations, A and B.

Which Pig statement combines A by its first field and B by its second field?

A) C = JOIN A by al, B by b2;
B) C = DOIN B BY a1, A by b2;
C) C = JOIN A a1, B b2;
D) C = JOIN A SO, B $1;

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

4. What does the following command do?
register '/piggyban):/pig-files.jar';

A) Invokes the user-defined functions contained in the jar file
B) Transforms Pig user-defined functions into a format that Hive can accept
C) Assigns a name to a user-defined function or streaming command
D) Specifies the location of the JAR file containing the user-defined functions

5. In a MapReduce job, the reducer receives all values associated with same key. Which statement best describes the ordering of these values?

A) Since the values come from mapper outputs, the reducers will receive contiguous sections of sorted values.
B) The values are arbitrarily ordered, and the ordering may vary from run to run of the same MapReduce job.
C) The values are arbitrary ordered, but multiple runs of the same MapReduce job will always have the same ordering.
D) The values are in sorted order.

Solutions: