Author: hlin09 <hlin09pu@gmail.com>

Closes #5568 from hlin09/zipPartitions and squashes the following commits:

12c08a5 [hlin09] Fix comments
d2d32db [hlin09] Merge branch 'master' into zipPartitions
ec56d2f [hlin09] Fix test.
27655d3 [hlin09] Adds support for zipPartitions.