mappers on node 2
would be reduced in parallel on node 2 and there would be 1 final inter-node
reduce (of node 1 reduced result and node 2 reduced result).
Isn't parallel reduce supported WITHIN a key (in this case I have no key) ?
(I know that there is parallelism in reduce across keys)
Best
in parallel in node 1 while the outputs of the 16 mappers on node 2
would be reduced in parallel on node 2 and there would be 1 final inter-node
reduce (of node 1 reduced result and node 2 reduced result).
Isn't parallel reduce supported WITHIN a key (in this case I have no key) ?
(I know