Explain what does the conf setMapper Class do

0 votes
Can anyone explain what conf.setMapper class does in Hadoop?
Jun 10, 2019 in Big Data Hadoop by sekhar
128 views

1 answer to this question.

0 votes

Hi,

Conf.setMapperclass  sets the mapper class and all the stuff related to map job such as reading data and generating a key-value pair out of the mapper.

answered Jun 10, 2019 by Gitika
• 65,870 points

Related Questions In Big Data Hadoop

0 votes
1 answer

What do we exactly mean by “Hadoop” – the definition of Hadoop?

The official definition of Apache Hadoop given ...READ MORE

answered Mar 16, 2018 in Big Data Hadoop by Shubham
1,003 views
0 votes
1 answer

What is the best functional language to do Hadoop Map-Reduce?

down voteacceptedBoth Clojure and Haskell are definitely ...READ MORE

answered Sep 4, 2018 in Big Data Hadoop by Frankie
• 9,810 points
239 views
0 votes
1 answer

What does a Hadoop tester do?

Hadoop tester, like any other tester, has ...READ MORE

answered Nov 6, 2018 in Big Data Hadoop by Omkar
• 69,130 points
82 views
0 votes
1 answer

What is the usage of Configured class in Hadoop programs?

Configured is a default implementation of the Configurable interface - ...READ MORE

answered Nov 22, 2018 in Big Data Hadoop by Frankie
• 9,810 points
548 views
+1 vote
1 answer

Hadoop Mapreduce word count Program

Firstly you need to understand the concept ...READ MORE

answered Mar 16, 2018 in Data Analytics by nitinrawat895
• 11,380 points
7,208 views
0 votes
1 answer

hadoop.mapred vs hadoop.mapreduce?

org.apache.hadoop.mapred is the Old API  org.apache.hadoop.mapreduce is the ...READ MORE

answered Mar 16, 2018 in Data Analytics by nitinrawat895
• 11,380 points
1,169 views
+2 votes
11 answers

hadoop fs -put command?

Hi, You can create one directory in HDFS ...READ MORE

answered Mar 16, 2018 in Big Data Hadoop by nitinrawat895
• 11,380 points
52,785 views
–1 vote
1 answer

Hadoop dfs -ls command?

In your case there is no difference ...READ MORE

answered Mar 16, 2018 in Big Data Hadoop by kurt_cobain
• 9,390 points
2,726 views
0 votes
1 answer

Mention what is the Hadoop MapReduce APIs contract for a key and value class?

Hey, For a key and value class, there ...READ MORE

answered Jun 10, 2019 in Big Data Hadoop by Gitika
• 65,870 points
228 views
0 votes
12 answers

What is Zookeeper? What is the purpose of Zookeeper in Hadoop Ecosystem?

Hey, Apache Zookeeper says that it is a ...READ MORE

answered Apr 29, 2019 in Big Data Hadoop by Gitika
• 65,870 points
15,923 views