YARN-1362. Distinguish between nodemanager shutdown for decommission vs shutdown for restart. (Contributed by Jason Lowe)

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1594421 13f79535-47bb-0310-9956-ffa450edef68

hadoop-yarn-project/CHANGES.txt

@@ -26,6 +26,9 @@ Release 2.5.0 - UNRELEASED
     YARN-1864. Fair Scheduler Dynamic Hierarchical User Queues (Ashwin Shankar
     via Sandy Ryza)
 
+    YARN-1362. Distinguish between nodemanager shutdown for decommission vs shutdown 
+    for restart. (Jason Lowe via junping_du)
+
   IMPROVEMENTS
 
     YARN-1479. Invalid NaN values in Hadoop REST API JSON response (Chen He via

hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-nodemanager/src/main/java/org/apache/hadoop/yarn/server/nodemanager/Context.java

@@ -66,4 +66,8 @@ public interface Context {
   LocalDirsHandlerService getLocalDirsHandler();
 
   ApplicationACLsManager getApplicationACLsManager();
+
+  boolean getDecommissioned();
+
+  void setDecommissioned(boolean isDecommissioned);
 }

hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-nodemanager/src/main/java/org/apache/hadoop/yarn/server/nodemanager/NodeManager.java

@@ -272,6 +272,7 @@ public class NodeManager extends CompositeService
     private WebServer webServer;
     private final NodeHealthStatus nodeHealthStatus = RecordFactoryProvider
         .getRecordFactory(null).newRecordInstance(NodeHealthStatus.class);
+    private boolean isDecommissioned = false;
 
     public NMContext(NMContainerTokenSecretManager containerTokenSecretManager,
         NMTokenSecretManagerInNM nmTokenSecretManager,
@@ -349,6 +350,16 @@ public class NodeManager extends CompositeService
     public ApplicationACLsManager getApplicationACLsManager() {
       return aclsManager;
     }
+
+    @Override
+    public boolean getDecommissioned() {
+      return isDecommissioned;
+    }
+
+    @Override
+    public void setDecommissioned(boolean isDecommissioned) {
+      this.isDecommissioned = isDecommissioned;
+    }
   }
 
 

hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-nodemanager/src/main/java/org/apache/hadoop/yarn/server/nodemanager/NodeStatusUpdaterImpl.java

@@ -493,6 +493,7 @@ public class NodeStatusUpdaterImpl extends AbstractService implements
                     + " hence shutting down.");
               LOG.warn("Message from ResourceManager: "
                   + response.getDiagnosticsMessage());
+              context.setDecommissioned(true);
               dispatcher.getEventHandler().handle(
                   new NodeManagerEvent(NodeManagerEventType.SHUTDOWN));
               break;

hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-nodemanager/src/test/java/org/apache/hadoop/yarn/server/nodemanager/TestNodeStatusUpdater.java

@@ -930,6 +930,7 @@ public class TestNodeStatusUpdater {
       Thread.sleep(500);
     }
     Assert.assertFalse(heartBeatID < 1);
+    Assert.assertTrue(nm.getNMContext().getDecommissioned());
 
     // NM takes a while to reach the STOPPED state.
     waitCount = 0;