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Hortonworks HADOOP-PR000007 Exam Syllabus Topics:
| Section | Objectives |
|---|---|
| Pig Development | - Pig data types and UDFs - Pig Latin scripting |
| Hive Development | - Hive optimization and execution - Hive table definitions and queries |
| Hadoop Core Concepts | - HDFS architecture and commands - YARN and MapReduce fundamentals |
| Hadoop Ecosystem Tools | - Sqoop and data ingestion - Workflow and processing frameworks |
Hortonworks-Certified-Apache-Hadoop-2.0-Developer(Pig and Hive Developer) Sample Questions:
You write MapReduce job to process 100 files in HDFS. Your MapReduce algorithm uses
TextInputFormat: the mapper applies a regular expression over input values and emits key-values pairs
with the key consisting of the matching text, and the value containing the filename and byte offset.
Determine the difference between setting the number of reduces to one and settings the number of
reducers to zero.
- A. There is no difference in output between the two settings.
- B. With zero reducers, instances of matching patterns are stored in multiple files on HDFS. With one
reducer, all instances of matching patterns are gathered together in one file on HDFS. - C. With zero reducers, all instances of matching patterns are gathered together in one file on HDFS. With
one reducer, instances of matching patterns are stored in multiple files on HDFS. - D. With zero reducers, no reducer runs and the job throws an exception. With one reducer, instances of
matching patterns are stored in a single file on HDFS.
Correct Answer: B 🗳️
Which one of the following statements describes the relationship between the NodeManager and the
ApplicationMaster?
- A. The ApplicationMaster starts the NodeManager in a Container
- B. The NodeManager creates an instance of the ApplicationMaster
- C. The NodeManager requests resources from the ApplicationMaster
- D. The ApplicationMaster starts the NodeManager outside of a Container
Correct Answer: B 🗳️
What is the term for the process of moving map outputs to the reducers?
- A. Reducing
- B. Shuffling and sorting
- C. Combining
- D. Partitioning
Correct Answer: B 🗳️
You need to create a job that does frequency analysis on input data. You will do this by writing a Mapper
that uses TextInputFormat and splits each value (a line of text from an input file) into individual characters.
For each one of these characters, you will emit the character as a key and an InputWritable as the value.
As this will produce proportionally more intermediate data than input data, which two resources should
you expect to be bottlenecks?
- A. Processor and network I/O
- B. Disk I/O and network I/O
- C. Processor and disk I/O
- D. Processor and RAM
Correct Answer: B 🗳️
You want to Ingest log files Into HDFS, which tool would you use?
- A. Flume
- B. HCatalog
- C. Sqoop
- D. Ambari
Correct Answer: A 🗳️
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