Point out the wrong statement.
A. To read data from an HBase table, use the get() method of the HTable class
B. You can retrieve data from the HBase table using the get() method of the HTable class
C. While retrieving data, you can get a single row by id, or get a set of rows by a set of row ids, or scan an entire table or a subset of rows
D. None of the mentioned
Answer: Option D
This Question Belongs to Hadoop >> Developing MapReduce Applications
What is the purpose of the Mapper class in a MapReduce application?
A. Generate intermediate key-value pairs
B. Read and parse input data
C. Aggregate values on the reducer side
D. Execute MapReduce jobs
In a MapReduce job, what does the term "Reducer" refer to?
A. Task that processes the Map output
B. Task that processes the Reduce output
C. Task that processes the Map input
D. Task that processes the Reduce input
What is the role of the Partitioner in a MapReduce application?
A. Distribute data across multiple nodes
B. Sort and shuffle data
C. Combine intermediate key-value pairs on the mapper side
D. Determine the reducer for each key
In a MapReduce program, what is the purpose of the Hadoop Configuration object?
A. Manage computation resources
B. Set job-level configurations
C. Execute MapReduce jobs
D. Read and parse input data
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