Hortonworks HADOOP-PR000007 : Hortonworks-Certified-Apache-Hadoop-2.0-Developer(Pig and Hive Developer)

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Hortonworks HADOOP-PR000007 Exam Syllabus Topics:

Hortonworks-Certified-Apache-Hadoop-2.0-Developer(Pig and Hive Developer) Sample Questions:

1. In the reducer, the MapReduce API provides you with an iterator over Writable values. What does calling
the next () method return?

A) It returns a reference to a different Writable object time.
B) It returns a reference to the same Writable object if the next value is the same as the previous value, or
a new Writable object otherwise.
C) It returns a reference to a Writable object. The API leaves unspecified whether this is a reused object
or a new object.
D) It returns a reference to a Writable object from an object pool.
E) It returns a reference to the same Writable object each time, but populated with different data.

2. Identify the tool best suited to import a portion of a relational database every day as files into HDFS, and
generate Java classes to interact with that imported data?

A) Pig
B) Hue
C) fuse-dfs
D) Hive
E) Oozie
F) Flume
G) Sqoop

3. Given the following Hive command:
INSERT OVERWRITE TABLE mytable SELECT * FROM myothertable;
Which one of the following statements is true?

A) Any existing data in mytable will be overwritten
B) The contents of myothertable are appended to mytable
C) A new table named mytable is created, and the contents of myothertable are copied into mytable
D) The statement is not a valid Hive command

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

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

5. Which HDFS command displays the contents of the file x in the user's HDFS home directory?

A) hadoop fs -cp x
B) hdfs fs -get x
C) hadoop fs -cat x
D) hadoop fs -Is x

Solutions: