YARN-3965. Add startup timestamp to nodemanager UI. Contributed by Hong Zhiguo

hadoop-yarn-project/CHANGES.txt

@@ -361,6 +361,8 @@ Release 2.8.0 - UNRELEASED
     YARN-3950. Add unique SHELL_ID environment variable to DistributedShell
     (Robert Kanter via jlowe)
 
+    YARN-3965. Add startup timestamp to nodemanager UI (Hong Zhiguo via jlowe)
+
   OPTIMIZATIONS
 
     YARN-3339. TestDockerContainerExecutor should pull a single image and not

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

@@ -81,6 +81,7 @@ public class NodeManager extends CompositeService
   public static final int SHUTDOWN_HOOK_PRIORITY = 30;
 
   private static final Log LOG = LogFactory.getLog(NodeManager.class);
+  private static long nmStartupTime = System.currentTimeMillis();
   protected final NodeManagerMetrics metrics = NodeManagerMetrics.create();
   private ApplicationACLsManager aclsManager;
   private NodeHealthCheckerService nodeHealthChecker;
@@ -101,6 +102,10 @@ public class NodeManager extends CompositeService
     super(NodeManager.class.getName());
   }
 
+  public static long getNMStartupTime() {
+    return nmStartupTime;
+  }
+
   protected NodeStatusUpdater createNodeStatusUpdater(Context context,
       Dispatcher dispatcher, NodeHealthCheckerService healthChecker) {
     return new NodeStatusUpdaterImpl(context, dispatcher, healthChecker,

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

@@ -73,15 +73,17 @@ public class NodePage extends NMView {
               StringUtils.byteDesc(info.getTotalPmemAllocated() * BYTES_IN_MB))
           ._("Pmem enforcement enabled",
               info.isPmemCheckEnabled())
-           ._("Total VCores allocated for Containers",
-              String.valueOf(info.getTotalVCoresAllocated())) 
+          ._("Total VCores allocated for Containers",
+              String.valueOf(info.getTotalVCoresAllocated()))
           ._("NodeHealthyStatus",
               info.getHealthStatus())
           ._("LastNodeHealthTime", new Date(
               info.getLastNodeUpdateTime()))
           ._("NodeHealthReport",
               info.getHealthReport())
-          ._("Node Manager Version:", info.getNMBuildVersion() +
+          ._("NodeManager started on", new Date(
+              info.getNMStartupTime()))
+          ._("NodeManager Version:", info.getNMBuildVersion() +
               " on " + info.getNMVersionBuiltOn())
           ._("Hadoop Version:", info.getHadoopBuildVersion() +
               " on " + info.getHadoopVersionBuiltOn());

hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-nodemanager/src/main/java/org/apache/hadoop/yarn/server/nodemanager/webapp/dao/NodeInfo.java

@@ -24,6 +24,7 @@ import javax.xml.bind.annotation.XmlRootElement;
 
 import org.apache.hadoop.util.VersionInfo;
 import org.apache.hadoop.yarn.server.nodemanager.Context;
+import org.apache.hadoop.yarn.server.nodemanager.NodeManager;
 import org.apache.hadoop.yarn.server.nodemanager.ResourceView;
 import org.apache.hadoop.yarn.util.YarnVersionInfo;
 
@@ -49,6 +50,7 @@ public class NodeInfo {
   protected String hadoopVersionBuiltOn;
   protected String id;
   protected String nodeHostName;
+  protected long nmStartupTime;
 
   public NodeInfo() {
   } // JAXB needs this
@@ -77,6 +79,7 @@ public class NodeInfo {
     this.hadoopVersion = VersionInfo.getVersion();
     this.hadoopBuildVersion = VersionInfo.getBuildVersion();
     this.hadoopVersionBuiltOn = VersionInfo.getDate();
+    this.nmStartupTime = NodeManager.getNMStartupTime();
   }
 
   public String getNodeId() {
@@ -143,4 +146,7 @@ public class NodeInfo {
     return this.pmemCheckEnabled;
   }
 
+  public long getNMStartupTime() {
+    return nmStartupTime;
+  }
 }

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

@@ -402,7 +402,7 @@ public class TestNMWebServices extends JerseyTestBase {
   public void verifyNodeInfo(JSONObject json) throws JSONException, Exception {
     assertEquals("incorrect number of elements", 1, json.length());
     JSONObject info = json.getJSONObject("nodeInfo");
-    assertEquals("incorrect number of elements", 16, info.length());
+    assertEquals("incorrect number of elements", 17, info.length());
     verifyNodeInfoGeneric(info.getString("id"), info.getString("healthReport"),
         info.getLong("totalVmemAllocatedContainersMB"),
         info.getLong("totalPmemAllocatedContainersMB"),