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

Question : If a node appears to be running slowly then .....

1. the master can redundantly execute another instance of the same task
2. Result from the first to finish will be used
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4. 1 and 2 are correct

Correct Answer : Get Lastest Questions and Answer :

If a node appears to be running slowly, the master can
redundantly execute another instance of the same task
- Results from the first to finish will be used






Question : What are the core components of the Hadoop framework



1. HDFS (Hadoop Distributed File System)
2. MapReduce
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4. 1 nad 2 both are correct

Correct Answer : Get Lastest Questions and Answer :

Hadoop consists of two core components
- The Hadoop Distributed File System (HDFS)
- MapReduce







Question : Hadoop MapReduce code can be written in other than Java language ?

1. True
2. False

Correct Answer : Get Lastest Questions and Answer :

Mapreduce programs can be written in any scripting language using Hadoop Streaming

Related Questions

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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


Question : Mapper outputs zero or more key value pairs ?

1. True
2. False


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
3. Access Mostly Uused Products by 50000+ Subscribers
4. 1 and 2 are correct
5. 1,2 and 3 are correct


Question : The Mapper may use or completely ignore the input key ?



1. True
2. False


Question : What would be the key when file is an input to the MapReduce job


1. The key is the byte offset into the file at which the line starts
2. the key is the line contents itself
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4. None of the above




Question :The Mappers output must be in the form of key value pairs

1. True
2. False