Github user mridulm commented on the pull request:
https://github.com/apache/spark/pull/242#issuecomment-39404342
@pwendell @holdenk i dont have a good solution to keep compatibility, was
hoping you guys might :-)
This will require some rewrite, but I am hoping it wont be more than method
signature changes ...
@mateiz that is exactly the kind of usecase I was thinking about
if we had support for something like output collector, would have made even
more sense (stream relation 1 from iterator, replay iterator 2 repeatedly, and
output goes to a collector which could be disk backed to remove memory
pressure). But even without that, I can see the benefits of using Iterable
instead of Iterator (my scala collection knowledge is nil, thanks for pointing
out existing interface !) ...
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