Github user tgravescs commented on the pull request:
https://github.com/apache/spark/pull/11512#issuecomment-195370827
Yes its only if they explicitly System.exit. Or someone puts a System.exit
back into Spark but that shouldn't happen except on failure.
ok @jerryshao can you update pr for master to just be to change default
behavior of shutdown hook assume failures. Then a PR to 1.6 with this signal
handler
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