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質問 1：
You've written a MapReduce job that will process 500 million input records and generated 500 million key-value pairs. The data is not uniformly distributed. Your MapReduce job will create a significant amount of intermediate data that it needs to transfer between mappers and reduces which is a potential bottleneck. A custom implementation of which interface is most likely to reduce the amount of intermediate data transferred across the network?
A. Combiner
B. OutputFormat
C. Writable
D. InputFormat
E. Partitioner
F. WritableComparable
正解：A
解説: (Pass4Test メンバーにのみ表示されます)
質問 2：
Which one of the following statements regarding the components of YARN is FALSE?
A. A client application submits a YARW job to the ResourceManager
B. The ResourceManager is responsible for scheduling and allocating resources
C. A Container executes a specific task as assigned by the ApplicationMaster
D. The ResourceManager monitors and restarts any failed Containers
正解：D
質問 3：
What is the term for the process of moving map outputs to the reducers?
A. Partitioning
B. Shuffling and sorting
C. Reducing
D. Combining
正解：B
質問 4：
Which one of the following classes would a Pig command use to store data in a table defined in HCatalog?
A. No special class is needed for a Pig script to store data in an HCatalog table
B. org.apache.hcatalog.pig.HCatStorer
C. Pig scripts cannot use an HCatalog table
D. org.apache.hcatalog.pig.HCatOutputFormat
正解：B
質問 5：
Which best describes what the map method accepts and emits?
A. It accepts a single key-value pairs as input and can emit any number of key-value pair as output, including zero.
B. It accepts a list key-value pairs as input and can emit only one key-value pair as output.
C. It accepts a single key-value pair as input and emits a single key and list of corresponding values as output.
D. It accepts a single key-value pairs as input and can emit only one key-value pair as output.
正解：A
解説: (Pass4Test メンバーにのみ表示されます)
質問 6：
Which of the following tool was designed to import data from a relational database into HDFS?
A. HCatalog
B. Flume
C. Sqoop
D. Ambari
正解：C
You've written a MapReduce job that will process 500 million input records and generated 500 million key-value pairs. The data is not uniformly distributed. Your MapReduce job will create a significant amount of intermediate data that it needs to transfer between mappers and reduces which is a potential bottleneck. A custom implementation of which interface is most likely to reduce the amount of intermediate data transferred across the network?
A. Combiner
B. OutputFormat
C. Writable
D. InputFormat
E. Partitioner
F. WritableComparable
正解：A
解説: (Pass4Test メンバーにのみ表示されます)
質問 2：
Which one of the following statements regarding the components of YARN is FALSE?
A. A client application submits a YARW job to the ResourceManager
B. The ResourceManager is responsible for scheduling and allocating resources
C. A Container executes a specific task as assigned by the ApplicationMaster
D. The ResourceManager monitors and restarts any failed Containers
正解：D
質問 3：
What is the term for the process of moving map outputs to the reducers?
A. Partitioning
B. Shuffling and sorting
C. Reducing
D. Combining
正解：B
質問 4：
Which one of the following classes would a Pig command use to store data in a table defined in HCatalog?
A. No special class is needed for a Pig script to store data in an HCatalog table
B. org.apache.hcatalog.pig.HCatStorer
C. Pig scripts cannot use an HCatalog table
D. org.apache.hcatalog.pig.HCatOutputFormat
正解：B
質問 5：
Which best describes what the map method accepts and emits?
A. It accepts a single key-value pairs as input and can emit any number of key-value pair as output, including zero.
B. It accepts a list key-value pairs as input and can emit only one key-value pair as output.
C. It accepts a single key-value pair as input and emits a single key and list of corresponding values as output.
D. It accepts a single key-value pairs as input and can emit only one key-value pair as output.
正解：A
解説: (Pass4Test メンバーにのみ表示されます)
質問 6：
Which of the following tool was designed to import data from a relational database into HDFS?
A. HCatalog
B. Flume
C. Sqoop
D. Ambari
正解：C
松岛** -
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