Hadoop multiple input files example In MapReduce

Hadoop multiple input files example In MapReduce

In Our basic MapReduce Programs we took a single input file and then we load that particular input file from local path to Mapreduce framework.In this process we just add a single input file and then we got a single output file but coming to the real time scenarios we have to load multiple input […]

Multiple Output Files in MapReduce Program using MultipleTextOutputFormat

multiple-output-files-in-mapreduce-program-using-multipletextoutputformat

In Our Previous Post we discussed about MultipleInputs multiple input files concept in Mapreduce and now this is the time to discuss about Multiple Output Files in MapReduce Program using MultipleTextOutputFormat by using We have to import first of all import org.apache.hadoop.mapreduce.lib.output.MultipleOutputs from hadoop librires. Multiple Outputs in Mapreduce FileOutputFormat and its subclasses generate a set of files in […]

hadoop custom partitioner in mapreduce example

hadoop-custom-partitioner-in-mapreduce-example

In our last posts we all are clearly discussed about hadoop mapreduce architecture and how mapper function will work and how reducer function will work and how to set mapreduce program configurations in mapreduce driver class.Now we will learn about hadoop custom partitioner in mapreduce example . what is partitioner in hadoop The main purpose of […]

Count Group of Repeated Characters in a String Mapreduce Java

count-group-of-repeated-characters-in-a-string-mapreduce-java

In our Last Program character count example in mapreduce java program we had clearly discussed about character count in a large text file.In the same way now we will learn about Count Group of Repeated Characters in a String Mapreduce Java. Here we taken an input like this below In the above input file every line […]

Character Count Example In Mapreduce java

Character Count Example In Mapreduce java

Generally we all are know about Word count example in mapreduce java program and that is very basic hadoop mapreduce program in big data like hello world program in java.In our previous program we had discussed about Word count program driver class,mapper class and reducer class very clearly.Now it’s turn to character count example in […]