Github user srowen commented on the issue:
https://github.com/apache/spark/pull/14333
I don't understand the last change. As far as I can see it can be destroyed
inside the loop iteration. It's also possible to reuse the broadcast (declare
outside the loop), and unpersist each iteration, and destroy afterwards. But I
don't see the need to hold on to all these broadcasts?
Yes you make a fair point about recovery. I think your changes are safe in
this respect, good.
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