Point out the wrong statement.(a) The framework calls reduce method for each pair in the grouped inputs(b) The output of the Reducer is re-sorted(c) reduce method reduces values for a given key(d) None of the mentionedI have been asked this question by my school teacher while I was bunking the class.This question is from Java Interface in section HDFS – Hadoop Distributed File System of Hadoop

Point out the wrong statement.(a) The framework calls reduce method fo

1.	Point out the wrong statement.(a) The framework calls reduce method for each pair in the grouped inputs(b) The output of the Reducer is re-sorted(c) reduce method reduces values for a given key(d) None of the mentionedI have been asked this question by my school teacher while I was bunking the class.This question is from Java Interface in section HDFS – Hadoop Distributed File System of Hadoop
Answer» RIGHT CHOICE is (b) The output of the REDUCER is re-sorted The BEST explanation: The output of the Reducer is not re-sorted.

Discussion

No Comment Found

Related InterviewSolutions

_________ is a pluggable Map/Reduce scheduler for Hadoop which provides a way to share large clusters.(a) Flow Scheduler(b) Data Scheduler(c) Capacity Scheduler(d) None of the mentionedI got this question in an international level competition.Enquiry is from Hadoop Archives in portion HDFS – Hadoop Distributed File System of Hadoop
The __________ guarantees that excess resources taken from a queue will be restored to it within N minutes of its need for them.(a) capacitor(b) scheduler(c) datanode(d) none of the mentionedThis question was posed to me during an internship interview.My question is based upon Hadoop Archives topic in portion HDFS – Hadoop Distributed File System of Hadoop
Point out the wrong statement.(a) The Hadoop archive exposes itself as a file system layer(b) Hadoop archives are immutable(c) Archive rename, deletes and creates return an error(d) None of the mentionedThe question was asked in a national level competition.My question is taken from Hadoop Archives in division HDFS – Hadoop Distributed File System of Hadoop
Using Hadoop Archives in __________ is as easy as specifying a different input filesystem than the default file system.(a) Hive(b) Pig(c) MapReduce(d) All of the mentionedThis question was posed to me by my school principal while I was bunking the class.This is a very interesting question from Hadoop Archives in portion HDFS – Hadoop Distributed File System of Hadoop
_________ is the name of the archive you would like to create.(a) archive(b) archiveName(c) name(d) none of the mentionedI have been asked this question in a national level competition.Origin of the question is Hadoop Archives topic in portion HDFS – Hadoop Distributed File System of Hadoop
Point out the correct statement.(a) A Hadoop archive maps to a file system directory(b) Hadoop archives are special format archives(c) A Hadoop archive always has a *.har extension(d) All of the mentionedI have been asked this question in an interview.This intriguing question originated from Hadoop Archives topic in section HDFS – Hadoop Distributed File System of Hadoop
__________ controls the partitioning of the keys of the intermediate map-outputs.(a) Collector(b) Partitioner(c) InputFormat(d) None of the mentionedI had been asked this question in an interview for internship.This interesting question is from Data Flow topic in chapter HDFS – Hadoop Distributed File System of Hadoop
On a tasktracker, the map task passes the split to the createRecordReader() method on InputFormat to obtain a _________ for that split.(a) InputReader(b) RecordReader(c) OutputReader(d) None of the mentionedThe question was asked during an online exam.I want to ask this question from Data Flow in section HDFS – Hadoop Distributed File System of Hadoop
The default InputFormat is __________ which treats each value of input a new value and the associated key is byte offset.(a) TextFormat(b) TextInputFormat(c) InputFormat(d) All of the mentionedThe question was posed to me during an interview.My query is from Data Flow in portion HDFS – Hadoop Distributed File System of Hadoop
InputFormat class calls the ________ function and computes splits for each file and then sends them to the jobtracker.(a) puts(b) gets(c) getSplits(d) all of the mentionedI have been asked this question in examination.This question is from Data Flow in section HDFS – Hadoop Distributed File System of Hadoop

Discussion

No Comment Found

Related InterviewSolutions

Reply to Comment