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Hortonworks HADOOP-PR000007 Exam Syllabus Topics:
| Section | Weight | Objectives |
|---|---|---|
| Apache Pig Development | 40% | - User-defined functions (UDFs) and optimization - Integration with HCatalog and Hive - Pig Latin syntax, data loading, and storage - Data transformation, filtering, grouping, and joining |
| Data Ingestion & Ecosystem Integration | 5% | - Sqoop and Flume usage basics - Workflow orchestration with Oozie |
| Apache Hive Development | 35% | - Performance tuning and indexing - Data types, serialization, and file formats - HiveQL queries, joins, aggregations, and partitioning - Hive architecture, metastore, and table management |
| Hadoop Fundamentals & HDFS | 20% | - Hadoop 2.0 architecture & YARN - HDFS file operations, permissions, and data management |
Hortonworks-Certified-Apache-Hadoop-2.0-Developer(Pig and Hive Developer) Sample Questions:
Which one of the following statements describes a Pig bag. tuple, and map, respectively?
- A. Unordered collection of tuples, ordered set of fields, set of key value pairs
- B. Ordered collection of maps, ordered collection of bags, and unordered set of key/value pairs
- C. Ordered set of fields, ordered collection of tuples, ordered collection of maps
- D. Unordered collection of maps, ordered collection of tuples, ordered set of key/value pairs
Correct Answer: A 🗳️
What is the term for the process of moving map outputs to the reducers?
- A. Reducing
- B. Combining
- C. Partitioning
- D. Shuffling and sorting
Correct Answer: D 🗳️
You are developing a MapReduce job for sales reporting. The mapper will process input keys
representing the year (IntWritable) and input values representing product indentifies (Text).
Indentify what determines the data types used by the Mapper for a given job.
- A. The mapper-specification.xml file submitted with the job determine the mapper's input key and value
types. - B. The InputFormat used by the job determines the mapper's input key and value types.
- C. The data types specified in HADOOP_MAP_DATATYPES environment variable
- D. The key and value types specified in the JobConf.setMapInputKeyClass and
JobConf.setMapInputValuesClass methods
Correct Answer: B 🗳️
Given the following Hive command:
Which one of the following statements is true?
- A. The files in the mydata folder do not move from their current location In HDFS
- B. The files in the mydata folder are copied into Hive's underlying relational database
- C. The files in the mydata folder are copied to a subfolder of /apps/hlve/warehouse
- D. The files in the mydata folder are moved to a subfolder of /apps/hive/wa re house
Correct Answer: A 🗳️
When is the earliest point at which the reduce method of a given Reducer can be called?
- A. As soon as a mapper has emitted at least one record.
- B. Not until all mappers have finished processing all records.
- C. It depends on the InputFormat used for the job.
- D. As soon as at least one mapper has finished processing its input split.
Correct Answer: B 🗳️
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