Github user kayousterhout commented on the issue:
https://github.com/apache/spark/pull/12775
@mridulm what's the scenario you're imagining where it's worse to catch the
exception? I'm imagining one of two scenarios:
(1) There's a recoverable exception, in which case we should properly
register the task as failed (otherwise the job will hang) and log the exception
(which is what this PR does).
(2) There's an irrecoverable exception. My understanding is that this
change only impacts the logging in that case (since the relevant thread is
going to die anyway).
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