Hortonworks Hadoop 2.0 Certification exam for Pig and Hive Developer : Apache-Hadoop-Developer

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Hortonworks Apache-Hadoop-Developer Exam Syllabus Topics:

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

1. In Hadoop 2.0, which one of the following statements is true about a standby NameNode?
The Standby NameNode:

A) Processes all client requests and block reports from the appropriate DataNodes.
B) Communicates directly with the active NameNode to maintain the state of the active NameNode.
C) Runs on the same machine and shares the memory of the active NameNode.
D) Receives the same block reports as the active NameNode.

2. Which Two of the following statements are true about hdfs? Choose 2 answers

A) HDFS works best when storing a large number of relatively small files
B) An HDFS file that is larger than dfs.block.size is split into blocks
C) Blocks are replicated to multiple datanodes
D) Block sizes for all files must be the same size

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

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

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

5. 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

Solutions: