pan3793 commented on code in PR #52091:
URL: https://github.com/apache/spark/pull/52091#discussion_r2297621738
##########
core/src/main/scala/org/apache/spark/deploy/SparkSubmit.scala:
##########
@@ -1037,6 +1045,12 @@ private[spark] class SparkSubmit extends Logging {
case e: Throwable => logError("Failed to close SparkContext", e)
}
}
+ if (sparkConf.get(SUBMIT_CALL_SYSTEM_EXIT_ON_MAIN_EXIT)) {
+ logInfo(
+ log"Calling System.exit() with exit code ${MDC(LogKeys.EXIT_CODE,
exitCode)} " +
+ log"because main ${MDC(LogKeys.CONFIG,
SUBMIT_CALL_SYSTEM_EXIT_ON_MAIN_EXIT.key)}=true")
+ exitFn(exitCode)
Review Comment:
@itskals I think it's more appropriate to implement this in a shutdown hook.
You actually want a graceful shutdown mechanism that's not coupled to either
daemon or non-daemon threads. If users want to do some cleanup work or graceful
shutdown logic before the JVM terminates, they need to register a shutdown hook
rather than creating non-daemon threads.
BTW, you can use three backticks to quote the code block
```
I'm a
code block
```
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