Top "Combiners" questions

combiner and reducer can be different?

In many MapReduce programs, I see a reducer being used as a combiner as well. I know this is because …

mapreduce reducers combiners
“Combiner" Class in a mapreduce job

A Combiner runs after the Mapper and before the Reducer,it will receive as input all data emitted by the …

hadoop mapreduce reducers combiners
Multiple git commands in single command executed in order they are encountered by compiler

I have following list of commands that I run in respective order so that a source project can be committed …

bash git-bash combiners git
Hadoop combiner sort phase

When running a MapReduce job with a specified combiner, is the combiner run during the sort phase? I understand that …

hadoop mapreduce combiners