Exam Name: Hadoop 2.0 Certification exam for Pig and Hive Developer
Certification Provider: Hortonworks
Corresponding Certification: HCAHD
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Hortonworks Apache-Hadoop-Developer Exam Syllabus Topics:
| Section | Objectives |
|---|---|
| Topic 1: Data Analysis with Hive | - Hive query development
|
| Topic 2: Data Processing | - End-to-end Hadoop workflows
|
| Topic 3: Data Transformation with Pig | - Pig Latin programming
|
| Topic 4: Data Ingestion | - Import data into Hadoop
|
Hortonworks Hadoop 2.0 Certification exam for Pig and Hive Developer Sample Questions:
What types of algorithms are difficult to express in MapReduce v1 (MRv1)?
- A. Text analysis algorithms on large collections of unstructured text (e.g, Web crawls).
- B. Algorithms that require global, sharing states.
- C. Large-scale graph algorithms that require one-step link traversal.
- D. Algorithms that require applying the same mathematical function to large numbers of individual binary records.
- E. Relational operations on large amounts of structured and semi-structured data.
Correct Answer: B 🗳️
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What is 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 of WritableComparable objects, in sorted order.
- C. A SequenceFile contains a binary encoding of an arbitrary number key-value pairs. Each key must be the same type. Each value must be same type.
- D. A SequenceFile contains a binary encoding of an arbitrary number of heterogeneous writable objects.
Correct Answer: C 🗳️
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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. Sqoop
- B. Oozie
- C. Pig
- D. Flume
- E. Hive
- F. Hue
- G. fuse-dfs
Correct Answer: A 🗳️
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You need to perform statistical analysis in your MapReduce job and would like to call methods in the Apache Commons Math library, which is distributed as a 1.3 megabyte Java archive (JAR) file. Which is the best way to make this library available to your MapReducer job at runtime?
- A. Have your system administrator place the JAR file on a Web server accessible to all cluster nodes and then set the HTTP_JAR_URL environment variable to its location.
- B. Have your system administrator copy the JAR to all nodes in the cluster and set its location in the HADOOP_CLASSPATH environment variable before you submit your job.
- C. When submitting the job on the command line, specify the -libjars option followed by the JAR file path.
- D. Package your code and the Apache Commands Math library into a zip file named JobJar.zip
Correct Answer: C 🗳️
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MapReduce v2 (MRv2/YARN) is designed to address which two issues?
- A. Single point of failure in the NameNode.
- B. HDFS latency.
- C. Ability to run frameworks other than MapReduce, such as MPI.
- D. Resource pressure on the JobTracker.
- E. Standardize on a single MapReduce API.
- F. Reduce complexity of the MapReduce APIs.
Correct Answer: A,D 🗳️
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