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

1. You want to run Hadoop jobs on your development workstation for testing before you submit them to your production cluster. Which mode of operation in Hadoop allows you to most closely simulate a production cluster while using a single machine?

A) Run all the nodes in your production cluster as virtual machines on your development workstation.
B) Run the hadoop command with the -jt local and the -fs file:///options.
C) Run simldooop, the Apache open-source software for simulating Hadoop clusters.
D) Run the DataNode, TaskTracker, NameNode and JobTracker daemons on a single machine.

2. Table metadata in Hive is:

A) Stored along with the data in HDFS.
B) Stored as metadata on the NameNode.
C) Stored in ZooKeeper.
D) Stored in the Metastore.

3. Can you use MapReduce to perform a relational join on two large tables sharing a key? Assume that the two tables are formatted as comma-separated files in HDFS.

A) No, MapReduce cannot perform relational operations.
B) No, but it can be done with either Pig or Hive.
C) Yes, so long as both tables fit into memory.
D) Yes.
E) Yes, but only if one of the tables fits into memory

4. 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

5. Identify the MapReduce v2 (MRv2 / YARN) daemon responsible for launching application containers and monitoring application resource usage?

A) JobTracker
B) ApplicationMaster
C) ResourceManager
D) ApplicationMasterService
E) NodeManager
F) TaskTracker

Solutions: