Pandian Ramaiah

Lab 19: Reducer side join

Hi Hadoopers, I have written a post about Mapper side join in my previous post. Here is the code for […]

Hi Hadoopers, This post talks about how to do the joins in the mapper. I have two tables. One of […]

Hi, This is part of my blog post series on MapReduce. But let me tell you upfront, this doesn’t work. […]

Hi, I’m unable to schedule the posts for the past two days, as I have been stuck with creating the […]

Hi hadoopers, Here is the exception that screwed up me on Saturday night and failed my Mapper task. Mapper is […]

Hi Hadoopers, So we are looking at the 7th circle today – which is the job clean up. MR […]

Hi Hadoopers, We are in 6th circle today, which is the reducer function. A job is submitted by the user, […]

Pandian Ramaiah / September 30, 2016

Hi Hadoopers, Mappers run on individual machines and prepare intermediate results. They accept splits as inputs. Reducer accepts partition of […]

Pandian Ramaiah / September 29, 2016

Hi Hadoopers, The user had submitted his job. He has permissions. We have slots in the cluster. Job setup is […]

Pandian Ramaiah / September 28, 2016

Hi Hadoopers, We shall talk about 3rd circle today, as we talk about Job submission and Job initialilzation already. Scheduling […]