Github user srowen commented on the pull request:
https://github.com/apache/spark/pull/1391#issuecomment-48835447
That makes sense, but then it doesn't explain why a constant amount works
for a given job when executor memory is low, and then doesn't work when it is
high. This has also been my experience and I don't have a great grasp on why it
would be. More threads and open files in a busy executor? It goes indirectly
with how big you need your executor to be, but not directly.
Nishkam do you have a sense of how much extra memory you had to configure
to get it to work when executor memory increased? is it pretty marginal, or
quite substantial?
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