Point out the wrong statement.

Question

Admin · Accepted Answer

Reducer has 2 primary phases

Admin · Answer

Increasing the number of reduces increases the framework overhead, but increases load balancing and lowers the cost of failures

Admin · Answer

It is legal to set the number of reduce-tasks to zero if no reduction is desired

Admin · Answer

The framework groups Reducer inputs by keys (since different mappers may have output the same key) in the sort stage

Q. Point out the wrong statement.