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

1. You want to Ingest log files Into HDFS, which tool would you use?

A) Sqoop
B) HCatalog
C) Flume
D) Ambari

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

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

3. 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

4. You are developing a combiner that takes as input Text keys, IntWritable values, and emits Text keys, IntWritable values. Which interface should your class implement?

A) Mapper <Text, IntWritable, Text, IntWritable>
B) Combiner <Text, IntWritable, Text, IntWritable>
C) Combiner <Text, Text, IntWritable, IntWritable>
D) Reducer <Text, IntWritable, Text, IntWritable>
E) Reducer <Text, Text, IntWritable, IntWritable>

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

Solutions: