021 Recap Map, Reduce and Combiner in hadoop Part 1

[@phulers]

I couldn't find this clear explanation anyway ... Thank you

[@SudarshanThakurIRONPULLER]

Good concept and i have implemented Combiner by seeing your video .My apllication completes fast but there is one issue when i use combiner .i am reading Hbase table that has 40 regions and write to the text files .So because of 40 regions 40 mappers are running and when i run combiner for each mapper one output file getting generated .Can you please help ?

[@videoonlinelearning]

+Sudarshan Thakur pls mail us you detailed query