MAPREDUCE-3355. Fixed MR AM's ContainerLauncher to handle node-command timeouts correctly. (vinodkv)

svn merge -c r1202744 --ignore-ancestry ../../trunk/


git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-0.23@1202745 13f79535-47bb-0310-9956-ffa450edef68

hadoop-mapreduce-project/CHANGES.txt

@@ -41,6 +41,9 @@ Release 0.23.1 - Unreleased
     MAPREDUCE-3102. Changed NodeManager to fail fast when LinuxContainerExecutor
     has wrong configuration or permissions. (Hitesh Shah via vinodkv)
 
+    MAPREDUCE-3355. Fixed MR AM's ContainerLauncher to handle node-command
+    timeouts correctly. (vinodkv)
+
   OPTIMIZATIONS
 
   BUG FIXES

hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-app/src/main/java/org/apache/hadoop/mapreduce/v2/app/launcher/ContainerLauncherImpl.java

@@ -82,6 +82,7 @@ public class ContainerLauncherImpl extends AbstractService implements
   private Thread eventHandlingThread;
   private BlockingQueue<ContainerLauncherEvent> eventQueue =
       new LinkedBlockingQueue<ContainerLauncherEvent>();
+  final Timer commandTimer = new Timer(true);
   YarnRPC rpc;
 
   // To track numNodes.
@@ -201,14 +202,14 @@ public class ContainerLauncherImpl extends AbstractService implements
     return proxy;
   }
 
-  private static class CommandTimer extends TimerTask {
+  private static class CommandTimerTask extends TimerTask {
     private final Thread commandThread;
-    protected final ContainerLauncherEvent event;
     protected final String message;
+    private boolean cancelled = false;
 
-    public CommandTimer(Thread thread, ContainerLauncherEvent event) {
+    public CommandTimerTask(Thread thread, ContainerLauncherEvent event) {
+      super();
       this.commandThread = thread;
-      this.event = event;
       this.message = "Couldn't complete " + event.getType() + " on "
           + event.getContainerID() + "/" + event.getTaskAttemptID()
           + ". Interrupting and returning";
@@ -216,8 +217,27 @@ public class ContainerLauncherImpl extends AbstractService implements
 
     @Override
     public void run() {
-      LOG.warn(this.message);
-      this.commandThread.interrupt();
+      synchronized (this) {
+        if (this.cancelled) {
+          return;
+        }
+        LOG.warn(this.message);
+        StackTraceElement[] trace = this.commandThread.getStackTrace();
+        StringBuilder logMsg = new StringBuilder();
+        for (int i = 0; i < trace.length; i++) {
+          logMsg.append("\n\tat " + trace[i]);
+        }
+        LOG.info("Stack trace of the command-thread: \n" + logMsg.toString());
+        this.commandThread.interrupt();
+      }
+    }
+
+    @Override
+    public boolean cancel() {
+      synchronized (this) {
+        this.cancelled = true;
+        return super.cancel();
+      }
     }
   }
 
@@ -243,10 +263,11 @@ public class ContainerLauncherImpl extends AbstractService implements
       ContainerToken containerToken = event.getContainerToken();
       TaskAttemptId taskAttemptID = event.getTaskAttemptID();
 
-      Timer timer = new Timer(true);
-
       ContainerManager proxy = null;
 
+      CommandTimerTask timerTask = new CommandTimerTask(Thread
+          .currentThread(), event);
+
       switch(event.getType()) {
 
       case CONTAINER_REMOTE_LAUNCH:
@@ -254,16 +275,16 @@ public class ContainerLauncherImpl extends AbstractService implements
             = (ContainerRemoteLaunchEvent) event;
 
         try {
-          timer.schedule(new CommandTimer(Thread.currentThread(), event),
-              nmTimeOut);
+          commandTimer.schedule(timerTask, nmTimeOut);
 
           proxy = getCMProxy(containerID, containerManagerBindAddr,
               containerToken);
 
           // Interruped during getProxy, but that didn't throw exception
-          if (Thread.currentThread().isInterrupted()) {
+          if (Thread.interrupted()) {
             // The timer cancelled the command in the mean while.
-            String message = "Start-container for " + event.getContainerID()
+            String message = "Container launch failed for " + containerID
+                + " : Start-container for " + event.getContainerID()
                 + " got interrupted. Returning.";
             sendContainerLaunchFailedMsg(taskAttemptID, message);
             return;
@@ -280,11 +301,12 @@ public class ContainerLauncherImpl extends AbstractService implements
           StartContainerResponse response = proxy.startContainer(startRequest);
 
           // container started properly. Stop the timer
-          timer.cancel();
-          if (Thread.currentThread().isInterrupted()) {
+          timerTask.cancel();
+          if (Thread.interrupted()) {
             // The timer cancelled the command in the mean while, but
             // startContainer didn't throw exception
-            String message = "Start-container for " + event.getContainerID()
+            String message = "Container launch failed for " + containerID
+                + " : Start-container for " + event.getContainerID()
                 + " got interrupted. Returning.";
             sendContainerLaunchFailedMsg(taskAttemptID, message);
             return;
@@ -309,12 +331,19 @@ public class ContainerLauncherImpl extends AbstractService implements
           context.getEventHandler().handle(
               new TaskAttemptContainerLaunchedEvent(taskAttemptID, port));
         } catch (Throwable t) {
+          if (Thread.interrupted()) {
+            // The timer cancelled the command in the mean while.
+            LOG.info("Start-container for " + event.getContainerID()
+                + " got interrupted.");
+          }
           String message = "Container launch failed for " + containerID
               + " : " + StringUtils.stringifyException(t);
           sendContainerLaunchFailedMsg(taskAttemptID, message);
         } finally {
-          timer.cancel();
-          ContainerLauncherImpl.this.rpc.stopProxy(proxy, getConfig());
+          timerTask.cancel();
+          if (proxy != null) {
+            ContainerLauncherImpl.this.rpc.stopProxy(proxy, getConfig());
+          }
         }
 
         break;
@@ -331,13 +360,12 @@ public class ContainerLauncherImpl extends AbstractService implements
         } else {
 
           try {
-            timer.schedule(new CommandTimer(Thread.currentThread(), event),
-                nmTimeOut);
+            commandTimer.schedule(timerTask, nmTimeOut);
 
             proxy = getCMProxy(containerID, containerManagerBindAddr,
                 containerToken);
 
-            if (Thread.currentThread().isInterrupted()) {
+            if (Thread.interrupted()) {
               // The timer cancelled the command in the mean while. No need to
               // return, send cleanedup event anyways.
               LOG.info("Stop-container for " + event.getContainerID()
@@ -353,6 +381,14 @@ public class ContainerLauncherImpl extends AbstractService implements
               proxy.stopContainer(stopRequest);
             }
           } catch (Throwable t) {
+
+            if (Thread.interrupted()) {
+              // The timer cancelled the command in the mean while, clear the
+              // interrupt flag
+              LOG.info("Stop-container for " + event.getContainerID()
+                  + " got interrupted.");
+            }
+
             // ignore the cleanup failure
             String message = "cleanup failed for container "
                 + event.getContainerID() + " : "
@@ -363,8 +399,18 @@ public class ContainerLauncherImpl extends AbstractService implements
                         message));
             LOG.warn(message);
           } finally {
-            timer.cancel();
-            ContainerLauncherImpl.this.rpc.stopProxy(proxy, getConfig());
+            timerTask.cancel();
+            if (Thread.interrupted()) {
+              LOG.info("Stop-container for " + event.getContainerID()
+                  + " got interrupted.");
+              // ignore the cleanup failure
+              context.getEventHandler()
+                  .handle(new TaskAttemptDiagnosticsUpdateEvent(taskAttemptID,
+                    "cleanup failed for container " + event.getContainerID()));
+            }
+            if (proxy != null) {
+              ContainerLauncherImpl.this.rpc.stopProxy(proxy, getConfig());
+            }
           }
 
           // after killing, send killed event to taskattempt

hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-app/src/test/java/org/apache/hadoop/mapreduce/v2/app/TestContainerLauncher.java

@@ -88,11 +88,19 @@ public class TestContainerLauncher {
 
     app.waitForState(job, JobState.FAILED);
 
-    LOG.info("attempt.getDiagnostics: " + attempt.getDiagnostics());
-    Assert.assertTrue(attempt.getDiagnostics().toString().contains(
-        "Container launch failed for container_0_0000_01_000000 : "));
-    Assert.assertTrue(attempt.getDiagnostics().toString().contains(
-        ": java.lang.InterruptedException"));
+    String diagnostics = attempt.getDiagnostics().toString();
+    LOG.info("attempt.getDiagnostics: " + diagnostics);
+    if (swallowInterrupts) {
+      Assert.assertEquals("[Container launch failed for "
+          + "container_0_0000_01_000000 : Start-container for "
+          + "container_0_0000_01_000000 got interrupted. Returning.]",
+          diagnostics);
+    } else {
+      Assert.assertTrue(diagnostics.contains("Container launch failed for "
+          + "container_0_0000_01_000000 : "));
+      Assert.assertTrue(diagnostics
+          .contains(": java.lang.InterruptedException"));
+    }
 
     app.stop();
   }
@@ -119,11 +127,10 @@ public class TestContainerLauncher {
             }
           } catch (InterruptedException e) {
             LOG.info(e);
-            if (!swallowInterrupts) {
+            if (!MRAppWithSlowNM.this.swallowInterrupts) {
               throw new IOException(e);
-            } else {
-              Thread.currentThread().interrupt();
             }
+            Thread.currentThread().interrupt();
           }
           return null;
         }