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

1. In a MapReduce job, you want each of your input files processed by a single map task. How do you configure a MapReduce job so that a single map task processes each input file regardless of how many blocks the input file occupies?

A) Write a custom MapRunner that iterates over all key-value pairs in the entire file.
B) Increase the parameter that controls minimum split size in the job configuration.
C) Write a custom FileInputFormat and override the method isSplitable to always return false.
D) Set the number of mappers equal to the number of input files you want to process.

2. Which one of the following files is required in every Oozie Workflow application?

A) Oozie.xml
B) job.properties
C) Config-default.xml
D) Workflow.xml

3. Which best describes how TextInputFormat processes input files and line breaks?

A) Input file splits may cross line breaks. A line that crosses file splits is read by the RecordReader of the split that contains the end of the broken line.
B) Input file splits may cross line breaks. A line that crosses file splits is read by the RecordReader of the split that contains the beginning of the broken line.
C) The input file is split exactly at the line breaks, so each RecordReader will read a series of complete lines.
D) Input file splits may cross line breaks. A line that crosses file splits is read by the RecordReaders of both splits containing the broken line.
E) Input file splits may cross line breaks. A line that crosses file splits is ignored.

4. In Hadoop 2.0, which TWO of the following processes work together to provide automatic failover of the NameNode? Choose 2 answers

A) ZKFailoverController
B) ZooKeeper
C) JournalNode
D) QuorumManager

5. Which one of the following is NOT a valid Oozie action?

A) mrunit
B) mapreduce
C) hive
D) pig

Solutions: