mridulm commented on PR #37779:
URL: https://github.com/apache/spark/pull/37779#issuecomment-1255648587
A few points:
* Plugins are initialized as part of `Executor` construction, but after
uncaught exception handler is set.
* If anything other than `NonFatal` is thrown in `receive` (like the
`LinkageError` from @yabola's example here), it will be handled in
`Inbox.process` as part of `safelyCall` - which will result in re-throwing it.
* This now bubbles up to `receiveLoop` - where we end up throwing the
throwable again (after scheduling it for re-execution).
* The throw should result in uncaught exception handler killing the jvm -
and if it does not, then the re-enqueue in prev step will cause the message to
be reprocessed.
* In this case we are discussing, it should have resulted in killing the
VM.
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