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Mapr (HP) Hadoop Developer Certification Questions and Answers (Dumps and Practice Questions)



Question : Which of the methods are available, if you use mapreduce package Mapper class?


: Which of the methods are available, if you use mapreduce package Mapper class?
1. map(), setup(), cleanup(),run()

2. map(), reduce(), setup(), cleanup(),run()

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4. map(), reduce(), setup(),run()

5. map(), reduce(), setup()


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Question : Which of the following class is responsible for creating key-value pairs from input-split and submitted to Mapper for further processing

: Which of the following class is responsible for creating key-value pairs from input-split and submitted to Mapper for further processing
1. RecordReader

2. Tasktracker

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4. JobTracker

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Question : Which all methods can be called by the run() method of a Mapper/Reducer class
: Which all methods can be called by the run() method of a Mapper/Reducer class
1. setup(),map(),cleanup() or setup(),reduce(),cleanup()
2. setup(),map(),cleanup() or setup(),reduce()
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4. setup(),map(),reduce(),cleanup()

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Related Questions

Question : Put statements in correct order

A. Applications Manager talks directly to the Node Managers on those nodes to launch the containers for tasks.
B. Applications Manager, on boot-up, registers with ResourceManager
C. Resource Manager allocates a container for Applications Manager on a node. Tells Node Manager in charge of that node to launch the Applications Manager container
D. Resource Manager allocates the containers on different nodes in the cluster.
E. A client program submits the application



 : Put statements in correct order
1. A,B,C,D,E
2. E,C,B,D,A
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4. A,E,B,D,C
5. D,A,B,E,C


Question : Select the correct steps in which Non-MapReduce jobs are submitted on YARN cluster
A. The Resource Manager starts the Application Master to allocate a container to the job.
B. User submits an app request by passing configuration to the Application Master and to the Resource Manager.
C. When the Application Master is done, it then unregisters from the Resource Manager.
D. Then the Application Master launches the container and monitors it.

: Select the correct steps in which Non-MapReduce jobs are submitted on YARN cluster
1. D,B,A,C
2. D,A,B,C
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4. C,D,A,B
5. D,C,B,A


Question : Which of the following component is part of resource manager


 : Which of the following component is part of resource manager
1. Application Master

2. Application Manager'

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4. Container



Question : Place the following steps in order of execution for MapR Direct Shuffle work flow in YARN.

A. After that the Node Manager on each node launches containers using information about the node s local volume from the LocalVolumeAuxiliaryService.
B. The Application Master service initializes the application by calling initialize Application() on the LocalVolumeAuxiliaryService.
C. Application Master Service requests task containers from the Resource Manager.
D. Then the Resource Manager sends the App Master information that AppMaster uses to request containers from the NodeManager.

 : Place the following steps in order of execution for MapR Direct Shuffle work flow in YARN.
1. A,B,C,D
2. D,C,B,A
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4. B,C,D,A
5. C,D,B.A


Question : You have an Hadoop ecosystem components that use MapReduce under the hood , how can you define which Version of the to use either Classic or yarn


 : You have an Hadoop ecosystem components that use MapReduce under the hood , how can you define which Version of the to use either Classic or yarn
1. set a parameter called default_mode in their /opt/mapr/conf/hadoop_version configuration file of each component

2. While submitting the job we must use maprcli command and setting mode argument

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4. None of the above



Question : In YARN cluster, which of the following component, you can use to monitor your job?


 : In YARN cluster, which of the following component, you can use to monitor your job?
1. Job Tracker

2. Task Tracker

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4. 1,3
5. 1,2,3