Github user njwhite commented on the issue:
https://github.com/apache/spark/pull/12951
Actually, @kayousterhout - I'm not entirely sure what you expect for the
semantics of maxShares in general. Maybe a worked example would help: if I have
a pool X with 5 running tasks from Taskset A and a maxShares of 7. Pool X is a
child of pool Y which has a maxShares of 8. I want to the schedule another task
from Taskset A, so should the scheduler allow it or not? Do you need to know
how many executors are currently running (and so the maximum number of tasks
that could be run)?
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