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Hortonworks HADOOP-PR000007 Exam Syllabus Topics:
| Section | Weight | Objectives |
|---|---|---|
| Hadoop Fundamentals & HDFS | 20% | - Hadoop 2.0 architecture & YARN - HDFS file operations, permissions, and data management |
| Apache Pig Development | 40% | - Pig Latin syntax, data loading, and storage - Data transformation, filtering, grouping, and joining - User-defined functions (UDFs) and optimization - Integration with HCatalog and Hive |
| Data Ingestion & Ecosystem Integration | 5% | - Workflow orchestration with Oozie - Sqoop and Flume usage basics |
| Apache Hive Development | 35% | - HiveQL queries, joins, aggregations, and partitioning - Performance tuning and indexing - Hive architecture, metastore, and table management - Data types, serialization, and file formats |
Hortonworks-Certified-Apache-Hadoop-2.0-Developer(Pig and Hive Developer) Sample Questions:
1. You are developing a combiner that takes as input Text keys, IntWritable values, and emits Text keys,
IntWritable values. Which interface should your class implement?
A) Mapper <Text, IntWritable, Text, IntWritable>
B) Reducer <Text, Text, IntWritable, IntWritable>
C) Combiner <Text, Text, IntWritable, IntWritable>
D) Reducer <Text, IntWritable, Text, IntWritable>
E) Combiner <Text, IntWritable, Text, IntWritable>
2. Consider the following two relations, A and B.
A Pig JOIN statement that combined relations A by its first field and B by its second field would produce
what output?
A) 2 cherry 2 cherry 3 orange 4 peach
B) 2 cherry Jim 2 2 cherry Chris 2 3 orange Terry 3 4 peach Brian 4
C) 2 cherry Jim, Chris 3 orange Terry 4 peach Brian
D) 2 Jim Chris 2 3 Terry 3 4 Brian 4
3. Which one of the following statements describes a Hive user-defined aggregate function?
A) Operates on multiple input rows and creates a single row as output
B) Operates on a single input row and produces a single row as output
C) Operates on multiple input rows and produces a table as output
D) Operates on a single input row and produces a table as output
4. Given the following Hive commands:
Which one of the following statements Is true?
A) The file mydata.txt is copied to a subfolder of /apps/hive/warehouse
B) The file mydata.txt is moved to a subfolder of /apps/hive/warehouse
C) The file mydata.txt is copied into Hive's underlying relational database 0.
D) The file mydata.txt does not move from Its current location in HDFS
5. You wrote a map function that throws a runtime exception when it encounters a control character in input
data. The input supplied to your mapper contains twelve such characters totals, spread across five file
splits. The first four file splits each have two control characters and the last split has four control
characters.
Indentify the number of failed task attempts you can expect when you run the job with
mapred.max.map.attempts set to 4:
A) You will have seventeen failed task attempts
B) You will have twelve failed task attempts
C) You will have forty-eight failed task attempts
D) You will have twenty failed task attempts
E) You will have five failed task attempts
Solutions:
| Question # 1 Answer: D | Question # 2 Answer: B | Question # 3 Answer: A | Question # 4 Answer: A | Question # 5 Answer: D |
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