Github user mateiz commented on the pull request:
https://github.com/apache/spark/pull/3003#issuecomment-61025739
Hey Davies, one other thing: in Executor, you should just not send back a
result if the single result exceeds maxResultSize. That way you avoid killing
the driver with that single result in clusters where executors have more memory
than the driver (which I think can happen). You could just serialize the
result, and if it's too big, fail the task with a "result too big" exception.
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