Github user tgravescs commented on a diff in the pull request: https://github.com/apache/spark/pull/15009#discussion_r101092206 --- Diff: core/src/main/scala/org/apache/spark/launcher/LauncherBackend.scala --- @@ -71,6 +100,9 @@ private[spark] abstract class LauncherBackend { if (connection != null && lastState != state) { connection.send(new SetState(state)) lastState = state + if (!_isConnected && stopOnShutdown) { --- End diff -- why do we need this check at all here vs just relying on the close() call? _isConnected only becomes false after calling that which should do the fireStopRequest(), am I missing a case? If it wasn't connected at all on startup the connection != null case wouldn't pass
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