diff options
| -rw-r--r-- | core/src/main/scala/org/apache/spark/scheduler/cluster/StandaloneSchedulerBackend.scala | 33 |
1 files changed, 17 insertions, 16 deletions
diff --git a/core/src/main/scala/org/apache/spark/scheduler/cluster/StandaloneSchedulerBackend.scala b/core/src/main/scala/org/apache/spark/scheduler/cluster/StandaloneSchedulerBackend.scala index 7befdb0c1f..0529fe9eed 100644 --- a/core/src/main/scala/org/apache/spark/scheduler/cluster/StandaloneSchedulerBackend.scala +++ b/core/src/main/scala/org/apache/spark/scheduler/cluster/StandaloneSchedulerBackend.scala @@ -18,6 +18,7 @@ package org.apache.spark.scheduler.cluster import java.util.concurrent.Semaphore +import java.util.concurrent.atomic.AtomicBoolean import scala.concurrent.Future @@ -42,7 +43,7 @@ private[spark] class StandaloneSchedulerBackend( with Logging { private var client: StandaloneAppClient = null - private var stopping = false + private val stopping = new AtomicBoolean(false) private val launcherBackend = new LauncherBackend() { override protected def onStopRequest(): Unit = stop(SparkAppHandle.State.KILLED) } @@ -112,7 +113,7 @@ private[spark] class StandaloneSchedulerBackend( launcherBackend.setState(SparkAppHandle.State.RUNNING) } - override def stop(): Unit = synchronized { + override def stop(): Unit = { stop(SparkAppHandle.State.FINISHED) } @@ -125,14 +126,14 @@ private[spark] class StandaloneSchedulerBackend( override def disconnected() { notifyContext() - if (!stopping) { + if (!stopping.get) { logWarning("Disconnected from Spark cluster! Waiting for reconnection...") } } override def dead(reason: String) { notifyContext() - if (!stopping) { + if (!stopping.get) { launcherBackend.setState(SparkAppHandle.State.KILLED) logError("Application has been killed. Reason: " + reason) try { @@ -206,20 +207,20 @@ private[spark] class StandaloneSchedulerBackend( registrationBarrier.release() } - private def stop(finalState: SparkAppHandle.State): Unit = synchronized { - try { - stopping = true - - super.stop() - client.stop() + private def stop(finalState: SparkAppHandle.State): Unit = { + if (stopping.compareAndSet(false, true)) { + try { + super.stop() + client.stop() - val callback = shutdownCallback - if (callback != null) { - callback(this) + val callback = shutdownCallback + if (callback != null) { + callback(this) + } + } finally { + launcherBackend.setState(finalState) + launcherBackend.close() } - } finally { - launcherBackend.setState(finalState) - launcherBackend.close() } } |