Nov 24, 2020 in HDFS
Q:

Name some Hadoop-specific data types that are used in a MapReduce program.

1 Answer

0 votes
Nov 24, 2020

This is an important question, as you would need to know the different data types if you are getting into the field of Big Data.

For every data type in Java, you have an equivalent in Hadoop. Therefore, the following are some Hadoop-specific data types that you could use in your MapReduce program:

IntWritable

FloatWritable 

LongWritable 

DoubleWritable 

BooleanWritable 

ArrayWritable 

MapWritable 

ObjectWritable 

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