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

1. All keys used for intermediate output from mappers must:

A) Be a subclass of FileInputFormat.
B) Implement a comparator for speedy sorting.
C) Implement WritableComparable.
D) Override isSplitable.
E) Implement a splittable compression algorithm.

2. You've written a MapReduce job that will process 500 million input records and generated 500 million key-value pairs. The data is not uniformly distributed. Your MapReduce job will create a significant amount of intermediate data that it needs to transfer between mappers and reduces which is a potential bottleneck. A custom implementation of which interface is most likely to reduce the amount of intermediate data transferred across the network?

A) Partitioner
B) Combiner
C) Writable
D) OutputFormat
E) InputFormat
F) WritableComparable

3. Indentify which best defines a SequenceFile?

A) A SequenceFile contains a binary encoding of an arbitrary number of homogeneous Writable objects
B) A SequenceFile contains a binary encoding of an arbitrary number key-value pairs. Each key must be the same type. Each value must be the same type.
C) A SequenceFile contains a binary encoding of an arbitrary number of WritableComparable objects, in sorted order.
D) A SequenceFile contains a binary encoding of an arbitrary number of heterogeneous Writable objects

4. Which of the following tool was designed to import data from a relational database into HDFS?

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

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

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

Solutions: