What is the role of a "combiner" in the Map reduce framework? Explain with the help of an example.

Welcome back.

and 4 others joined a min ago.

4.9kviews

written 6.7 years ago by

swatisharma • 1.4k

modified 5.6 years ago by

prashantsaini • 0

big data analytics

ADD COMMENT EDIT

1 Answer

294views

written 6.6 years ago by

teamques10 ★ 70k

enter image description here

Combiner:

i. A Reduce function is associative and commutative. That is, the values to be combined can be combined in any order, with the same result.

ii. The addition performed in Example 1 is an example of an associative and commutative operation. It doesn’t matter how we group a list …

and 2 others joined a min ago.

ADD COMMENT EDIT

Community

Content

Company