Hi, In the wordcount example: http://hadoop.apache.org/docs/r0.17.0/mapred_tutorial.html Lets say I run the above example and save the the output. But lets say that I have now a new input file. What I want to do is.. basically again do the wordcount but basically modifying the previous counts. For example.. sample_input1.txt //foo bar foo bar bar bar After first run: 1) foo 2 2) bar 4
Save it in output1.txt Now sample_input2.txt //bar hello world Now the result I am looking for is: 1)foo 2 2)bar 5 3) hello 1 4) world 1 How do i achieve this in map reduce?
