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Hortonworks Apache-Hadoop-Developer Exam Syllabus Topics:
| Section | Objectives |
|---|---|
| Topic 1: Data Transformation with Pig | - Pig Latin programming
|
| Topic 2: Data Ingestion | - Import data into Hadoop
|
| Topic 3: Data Analysis with Hive | - Hive query development
|
| Topic 4: Data Processing | - End-to-end Hadoop workflows
|
Hortonworks Hadoop 2.0 Certification exam for Pig and Hive Developer Sample Questions:
You have the following key-value pairs as output from your Map task:
(the, 1) (fox, 1) (faster, 1) (than, 1) (the, 1) (dog, 1)
How many keys will be passed to the Reducer's reduce method?
- A. One
- B. Four
- C. Five
- D. Two
- E. Six
- F. Three
Explanation: Only visible for TorrentExam members. You can sign-up / login (it's free).
Which describes how a client reads a file from HDFS?
- A. The client queries the NameNode for the block location(s). The NameNode returns the block location(s) to the client. The client reads the data directory off the DataNode(s).
- B. The client queries all DataNodes in parallel. The DataNode that contains the requested data responds directly to the client. The client reads the data directly off the DataNode.
- C. The client contacts the NameNode for the block location(s). The NameNode then queries the DataNodes for block locations. The DataNodes respond to the NameNode, and the NameNode redirects the client to the DataNode that holds the requested data block(s). The client then reads the data directly off the DataNode.
- D. The client contacts the NameNode for the block location(s). The NameNode contacts the DataNode that holds the requested data block. Data is transferred from the DataNode to the NameNode, and then from the NameNode to the client.
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In a large MapReduce job with m mappers and n reducers, how many distinct copy
operations will there be in the sort/shuffle phase?
- A. m
- B. n
- C. mn (i.e., m to the power of n)
- D. m+n (i.e., m plus n)
- E. mXn (i.e., m multiplied by n)
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Which best describes what the map method accepts and emits?
- A. It accepts a single key-value pair as input and emits a single key and list of corresponding values as output.
- B. It accepts a single key-value pairs as input and can emit only one key-value pair as output.
- C. It accepts a single key-value pairs as input and can emit any number of key-value pair as output, including zero.
- D. It accepts a list key-value pairs as input and can emit only one key-value pair as output.
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Examine the following Hive statements:
Assuming the statements above execute successfully, which one of the following statements is true?
- A. The contents of File1 are parsed as comma-delimited rows and stored in a database
- B. The contents of File1 are parsed as comma-delimited rows and loaded into /user/joe/x/
- C. The file named File1 is moved to to/user/joe/x/
- D. Hive reformats File1 into a structure that Hive can access and moves into to/user/joe/x/
Carey 
Roxanne 
Larry 
Athena 
Arabela 
Steward 
Hamiltion 
Newman 
Calvin 
Derrick 
Robin 
