How to sort data in map reduce hadoop?
If you want to sort according to value's, make it key in map function. i.e.
id value1 202 33 94 365 3(value) (key) in map function
output will be key value3 53 29 320 136 4map<value, id> output key/value reduce <value, id>if you want id to be in the first column, this will work.
context.write(value, key);
Note that, id's are not going to be sorted