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

Question : If a Task attempts is fail then JobTracker will wait to finish all the task and retry the failed task

1. true
2. false

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If a task fails, another will be started by the Jobtracker





Question : Mapper outputs zero or more key value pairs ?

1. True
2. False

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Question : Which statement is correct for the Hadoop framework



1. Hadoop attempts that Mappers run on node which hold their portio of data locally.
2. Multiple Mappers run parallel
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4. 1 and 2 are correct
5. 1,2 and 3 are correct

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Related Questions

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Question : Select correct statement regarding OOZie workflow



1. OOZie can manage non-Map-Reduce jobs like Pig, Hive , Standalone java programs

2. In OOzie , you can use fork and Join to have parallel processing

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4. 1,2

5. 1,2,3



Question : Select correct statemnet regarding OOZie workflow


1. You can mdify OOZie workflow using its XML

2. OOZie workflow are cyclic

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4. 1,3

5. 1,2


Question : If you have two Jobs and wants to run one after another, Select code snippet which represent correct one



1. JobClient.runJob(conf1), JobClient.runJob(conf2);

2. JobClient.run(conf1), JobClient.run(conf2);

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4. JobClient.submit(conf1), JobClient.submit(conf2);



Question : Using ChainMapper, you can have



1. Multiple Mappers before Multiple Reducer

2. Multiple Mappers before Single Reducer

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4. Single Mapper before Single Reducer



Question : Using the ChainReducer


1. You can have Multiple Mappers after Multiple Reducer

2. You can have Single Mappers after Multiple Reducer

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4. You can have Multiple Mappers after Single Reducer


Question : Single OOZie workflow can be used on..


1. Across Clusters

2. Only in same cluster

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4. 1,2

5. 1,3