Github user BryanCutler commented on a diff in the pull request:
https://github.com/apache/spark/pull/11746#discussion_r56270216
--- Diff:
core/src/main/scala/org/apache/spark/deploy/worker/DriverRunner.scala ---
@@ -67,56 +70,67 @@ private[deploy] class DriverRunner(
private var clock: Clock = new SystemClock()
private var sleeper = new Sleeper {
- def sleep(seconds: Int): Unit = (0 until seconds).takeWhile(f =>
{Thread.sleep(1000); !killed})
+ def sleep(seconds: Int): Unit = Thread.sleep(seconds * 1000)
}
/** Starts a thread to run and manage the driver. */
private[worker] def start() = {
- new Thread("DriverRunner for " + driverId) {
+ workerThread = new Thread("DriverRunner for " + driverId) {
override def run() {
try {
- val driverDir = createWorkingDirectory()
- val localJarFilename = downloadUserJar(driverDir)
-
- def substituteVariables(argument: String): String = argument
match {
- case "{{WORKER_URL}}" => workerUrl
- case "{{USER_JAR}}" => localJarFilename
- case other => other
+ shutdownHook = ShutdownHookManager.addShutdownHook { () =>
+ killProcessAndFinalize(DriverState.KILLED, new
SparkException("Worker shutting down"))
}
- // TODO: If we add ability to submit multiple jars they should
also be added here
- val builder =
CommandUtils.buildProcessBuilder(driverDesc.command, securityManager,
- driverDesc.mem, sparkHome.getAbsolutePath, substituteVariables)
- launchDriver(builder, driverDir, driverDesc.supervise)
+ // prepare driver jars, launch driver and set final state from
process exit code
+ val exitCode = prepareAndLaunchDriver()
+ finalState = if (exitCode == 0) Some(DriverState.FINISHED) else
Some(DriverState.FAILED)
}
catch {
- case e: Exception => finalException = Some(e)
+ case interrupted: InterruptedException =>
+ logInfo("Runner thread for driver " + driverId + "
interrupted")
+ killProcessAndFinalize(DriverState.KILLED, interrupted)
+ case e: Exception =>
+ killProcessAndFinalize(DriverState.ERROR, e)
+ }
+ finally {
+ if (shutdownHook != null)
ShutdownHookManager.removeShutdownHook(shutdownHook)
--- End diff --
From what I could tell, `DriverRunner.kill` is not always called, like if
the driver completes on its own. I remove the hook here so that this wouldn't
cause the DriverRunner object to be hanging around because the
ShutdownHookManager is holding on to a reference.
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