Github user kayousterhout commented on the issue:
https://github.com/apache/spark/pull/15249
@mridulm re: job failures, can you elaborate on the job failure scenario
you're concerned about?
Jobs can only fail when some tasks are unschedulable, which can happen if a
task is permanently blacklisted on all available nodes. This can only happen
when the number of nodes is smaller than the maximum number of failures for a
particular tax attempt, and also seems like it's very similar to existing
behavior: currently, if a task is blacklisted (even though the blacklist is
temporary) on all nodes, the job will be failed
(https://github.com/apache/spark/blob/master/core/src/main/scala/org/apache/spark/scheduler/TaskSetManager.scala#L595).
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