a) Partitionerb) OutputCollectorc) Reporterd) All of the mentioned Answer: cExplanation: Reporter is a facility for ...
View QuestionWhich of the following phases occur simultaneously?
a) Shuffle and Sortb) Reduce and Sortc) Shuffle and Mapd) All of the mentioned Answer: ...
View QuestionThe output of the _______ is not sorted in the Mapreduce framework for Hadoop.
a) Mapperb) Cascaderc) Scaldingd) None of the mentioned Answer: dExplanation: The output of the reduce ...
View QuestionPoint out the wrong statement.
a) Reducer has 2 primary phasesb) Increasing the number of reduces increases the framework overhead, but increases load ...
View QuestionThe right number of reduces seems to be ____________
a) 0.90b) 0.80c) 0.36d) 0.95 Answer: dExplanation: The right number of reduces seems to be ...
View QuestionInput to the _______ is the sorted output of the mappers.
a) Reducerb) Mapperc) Shuffled) All of the mentioned Answer: aExplanation: In the Shuffle phase the ...
View QuestionPoint out the correct statement.
a) Applications can use the Reporter to report progressb) The Hadoop MapReduce framework spawns one map task for ...
View QuestionMapper implementations are passed the JobConf for the job via the ________ method.
a) JobConfigure.configureb) JobConfigurable.configurec) JobConfigurable.configurabled) None of the mentioned Answer: bExplanation: JobConfigurable.configure method is overridden to ...
View QuestionHadoop has a library class, org.apache.hadoop.mapred.lib.FieldSelectionMapReduce, that effectively allows you to process text data like the unix ______ utility.
a) Copyb) Cutc) Pasted) Move Answer: bExplanation: The map function defined in the class treats ...
View QuestionWhich of the following class is provided by the Aggregate package?
a) Mapb) Reducerc) Reduced) None of the mentioned Answer: bExplanation: Aggregate provides a special reducer ...
View Question