How to run mapreduce program in terminal

Question

Hi. I have done a map reduce program in java now I want to run it in terminal but I am getting how to run it. Please help.

Answer 1

You can reference the below steps:

Step 1: Copy the code to you eclipse and export the jar.

Now for exporting the jar part, you should do this:

Now, browse to where you want to save the jar file.

Step 2: Copy the dataset to the hdfs using the below command:

hadoop fs -put wordcountproblem​

Step 3: Check if dataset was stored in hdfs:

Step 4: Execute the MapReduce code:

Syntax:

hadoop jar jar_name package_name.class_name input_path_in_hdfs output_path_in_hdfs

Step 8: Check the output directory for your output