Is no of block equal no of i/p split, no of container, no of mapper ?

0 votes

Can someone tell me if the following statement is true?

 no of block  == no of i/p split ==  no of container == no of mapper

Jun 20 in Big Data Hadoop by John
10 views

1 answer to this question.

0 votes
Split size is approximately equal to block size. InputSplit is user defined and the user can control split size based on the size of data in MapReduce program.

The number of map tasks is equal to the number of InputSplits. Initially ... InputFormat is used to define how these input files are split and read.

Container size depends on how much memory your program would require in general.
answered Jun 20 by Ron

Related Questions In Big Data Hadoop

0 votes
1 answer
0 votes
1 answer
0 votes
1 answer

How Impala is fast compared to Hive in terms of query response?

Impala provides faster response as it uses MPP(massively ...READ MORE

answered Mar 21, 2018 in Big Data Hadoop by nitinrawat895
• 10,110 points
232 views
0 votes
1 answer

What is the benefit of using CDH over other Distributors?

CDH is basically a packaged deal, where ...READ MORE

answered Mar 29, 2018 in Big Data Hadoop by kurt_cobain
• 9,240 points
40 views
0 votes
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
• 10,110 points
2,052 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
• 10,110 points
196 views
0 votes
10 answers

hadoop fs -put command?

copy command can be used to copy files ...READ MORE

answered Dec 7, 2018 in Big Data Hadoop by Sujay
10,495 views
0 votes
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
• 9,240 points
765 views
0 votes
11 answers

What is the default Namenode port of HDFS. Is it 8020 or 9000 or 50070?

8020/9000 hadoop namenode metadata port number. or ...READ MORE

answered Dec 31, 2018 in Big Data Hadoop by SM
7,498 views