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

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

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

2. You need to move a file titled "weblogs" into HDFS. When you try to copy the file, you can't. You know you have ample space on your DataNodes. Which action should you take to relieve this situation and store more files in HDFS?

A) Increase the block size on all current files in HDFS.
B) Increase the amount of memory for the NameNode.
C) Increase the number of disks (or size) for the NameNode.
D) Increase the block size on your remaining files.
E) Decrease the block size on your remaining files.
F) Decrease the block size on all current files in HDFS.

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

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

4. Review the following data and Pig code.
M,38,95111 F,29,95060 F,45,95192 M,62,95102 F,56,95102
A = LOAD 'data' USING PigStorage('.') as (gender:Chararray, age:int, zlp:chararray);
B = FOREACH A GENERATE age;
Which one of the following commands would save the results of B to a folder in hdfs named myoutput?

A) STORE B INTO 'myoutput';
B) DUMP B using PigStorage('myoutput');
C) STORE A INTO 'myoutput' USING PigStorage(',');
D) DUMP B INTO 'myoutput';

5. On a cluster running MapReduce v1 (MRv1), a TaskTracker heartbeats into the JobTracker on your cluster, and alerts the JobTracker it has an open map task slot.
What determines how the JobTracker assigns each map task to a TaskTracker?

A) The location of the InsputSplit to be processed in relation to the location of the node.
B) The average system load on the TaskTracker node over the past fifteen (15) minutes.
C) The amount of RAM installed on the TaskTracker node.
D) The number and speed of CPU cores on the TaskTracker node.
E) The amount of free disk space on the TaskTracker node.

Solutions: