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

1. Which one of the following statements regarding the components of YARN is FALSE?

A) A client application submits a YARW job to the ResourceManager
B) The ResourceManager monitors and restarts any failed Containers
C) The ResourceManager is responsible for scheduling and allocating resources
D) A Container executes a specific task as assigned by the ApplicationMaster

2. Which one of the following Hive commands uses an HCatalog table named x?

A) SELECT * FROM x;
B) SELECT * FROM org.apache.hcatalog.hive.HCatLoader('x');
C) SELECT x.-FROM org.apache.hcatalog.hive.HCatLoader('x');
D) Hive commands cannot reference an HCatalog table

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

4. Assuming the following Hive query executes successfully:

Which one of the following statements describes the result set?

A) A bigram of the top 80 sentences that contain the substring "you are" in the lines column of the input data A1 table.
B) A trigram of the top 80 sentences that contain "you are" followed by a null space in the lines column of the inputdata table.
C) A frequency distribution of the top 80 words that follow the subsequence "you are" in the lines column of the inputdata table.
D) An 80-value ngram of sentences that contain the words "you" or "are" in the lines column of the inputdata table.

5. You need to run the same job many times with minor variations. Rather than hardcoding all job configuration options in your drive code, you've decided to have your Driver subclass org.apache.hadoop.conf.Configured and implement the org.apache.hadoop.util.Tool interface.
Indentify which invocation correctly passes.mapred.job.name with a value of Example to Hadoop?

A) hadoop setproperty mapred.job.name=Example MyDriver input output
B) hadoop MyDriver mapred.job.name=Example input output
C) hadoop MyDrive -D mapred.job.name=Example input output
D) hadoop "mapred.job.name=Example" MyDriver input output
E) hadoop setproperty ("mapred.job.name=Example") MyDriver input output

Solutions: