WeichenXu123 commented on a change in pull request #25315:
[SPARK-28582][PYSPARK] Fix pyspark daemon exit failed when receive SIGTERM on
Python 3.7
URL: https://github.com/apache/spark/pull/25315#discussion_r309503553
##########
File path: python/pyspark/daemon.py
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@@ -102,7 +102,7 @@ def shutdown(code):
signal.signal(SIGTERM, SIG_DFL)
# Send SIGHUP to notify workers of shutdown
os.kill(0, SIGHUP)
- sys.exit(code)
+ os._exit(code)
Review comment:
This line `os.kill(0, SIGHUP)` kill child processes by sending SIGHUP to
them.
And I prefer `os._exit` rather than `sys.exit` here, because `sys.exit` will
throw `SystemExit` exception in main thread. If this `SystemExit` exception is
caught by user code then the kill will fail.
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