The example of mrsequential.go
[kou@python main]$ go run mrsequential.go wc.so pg*.txt
2020/02/22 21:20:31 cannot load plugin wc.so
exit status 1
[kou@python main]$ more mr-out-0
A 509
ABOUT 2
ACT 8
ACTRESS 1
ACTUAL 8
ADLER 1
The relation between map and reduce
