Big Data Essentials - Week 3 (Course 1)

[saint1729]

Hi,

In file "https://github.com/maxis42/Big-Data-Engineering-Coursera-Yandex/blob/master/1%20Big%20data%20essentials/Homeworks/Week%203/1%20Words%20Rating.ipynb"

In "mapper_rating.py", why did you print as

'print "%d\t%s" % (count, word)'?

Is it necessary that the element to be sorted to be present at the beginning.

I tried it the following way,

'print "%s\t%d" % (word, count)'

and changed the "line 6" from "reducer_rating.py" to

"word, count = line.strip().split('\t', 1)"

and changed the yarn command option to,

'-D mapreduce.partition.keycomparator.options=-k2,2nr'

It it not showing the right answer. Can you please tell me what is wrong in the options I set?