YARN-2778. Moved node-lables' reports to the yarn nodes CLI from the admin CLI. Contributed by Wangda Tan.

hadoop-yarn-project/CHANGES.txt

@@ -420,6 +420,9 @@ Release 2.6.0 - UNRELEASED
     YARN-2779. Fixed ResourceManager to not require delegation tokens for 
     communicating with Timeline Service. (Zhijie Shen via vinodkv)
 
+    YARN-2778. Moved node-lables' reports to the yarn nodes CLI from the admin
+    CLI. (Wangda Tan via vinodkv)
+
   OPTIMIZATIONS
 
   BUG FIXES

hadoop-yarn-project/hadoop-yarn/hadoop-yarn-api/src/main/java/org/apache/hadoop/yarn/api/records/NodeReport.java

@@ -64,6 +64,7 @@ public abstract class NodeReport {
     nodeReport.setNumContainers(numContainers);
     nodeReport.setHealthReport(healthReport);
     nodeReport.setLastHealthReportTime(lastHealthReportTime);
+    nodeReport.setNodeLabels(nodeLabels);
     return nodeReport;
   }
 

hadoop-yarn-project/hadoop-yarn/hadoop-yarn-client/src/main/java/org/apache/hadoop/yarn/client/cli/NodeCLI.java

@@ -20,6 +20,8 @@ package org.apache.hadoop.yarn.client.cli;
 import java.io.ByteArrayOutputStream;
 import java.io.IOException;
 import java.io.PrintWriter;
+import java.util.ArrayList;
+import java.util.Collections;
 import java.util.Date;
 import java.util.HashSet;
 import java.util.List;
@@ -31,6 +33,7 @@ import org.apache.commons.cli.HelpFormatter;
 import org.apache.commons.cli.MissingArgumentException;
 import org.apache.commons.cli.Option;
 import org.apache.commons.cli.Options;
+import org.apache.commons.lang.StringUtils;
 import org.apache.commons.lang.time.DateFormatUtils;
 import org.apache.hadoop.classification.InterfaceAudience.Private;
 import org.apache.hadoop.classification.InterfaceStability.Unstable;
@@ -199,6 +202,13 @@ public class NodeCLI extends YarnCLI {
           : (nodeReport.getUsed().getVirtualCores() + " vcores"));
       nodeReportStr.print("\tCPU-Capacity : ");
       nodeReportStr.println(nodeReport.getCapability().getVirtualCores() + " vcores");
+      nodeReportStr.print("\tNode-Labels : ");
+      
+      // Create a List for node labels since we need it get sorted
+      List<String> nodeLabelsList =
+          new ArrayList<String>(report.getNodeLabels());
+      Collections.sort(nodeLabelsList);
+      nodeReportStr.println(StringUtils.join(nodeLabelsList.iterator(), ','));
     }
 
     if (nodeReport == null) {

hadoop-yarn-project/hadoop-yarn/hadoop-yarn-client/src/test/java/org/apache/hadoop/yarn/client/cli/TestYarnCLI.java

@@ -1112,6 +1112,40 @@ public class TestYarnCLI {
 
   @Test
   public void testNodeStatus() throws Exception {
+    NodeId nodeId = NodeId.newInstance("host0", 0);
+    NodeCLI cli = new NodeCLI();
+    when(client.getNodeReports()).thenReturn(
+                    getNodeReports(3, NodeState.RUNNING, false));
+    cli.setClient(client);
+    cli.setSysOutPrintStream(sysOut);
+    cli.setSysErrPrintStream(sysErr);
+    int result = cli.run(new String[] { "-status", nodeId.toString() });
+    assertEquals(0, result);
+    verify(client).getNodeReports();
+    ByteArrayOutputStream baos = new ByteArrayOutputStream();
+    PrintWriter pw = new PrintWriter(baos);
+    pw.println("Node Report : ");
+    pw.println("\tNode-Id : host0:0");
+    pw.println("\tRack : rack1");
+    pw.println("\tNode-State : RUNNING");
+    pw.println("\tNode-Http-Address : host1:8888");
+    pw.println("\tLast-Health-Update : "
+      + DateFormatUtils.format(new Date(0), "E dd/MMM/yy hh:mm:ss:SSzz"));
+    pw.println("\tHealth-Report : ");
+    pw.println("\tContainers : 0");
+    pw.println("\tMemory-Used : 0MB");
+    pw.println("\tMemory-Capacity : 0MB");
+    pw.println("\tCPU-Used : 0 vcores");
+    pw.println("\tCPU-Capacity : 0 vcores");
+    pw.println("\tNode-Labels : a,b,c,x,y,z");
+    pw.close();
+    String nodeStatusStr = baos.toString("UTF-8");
+    verify(sysOut, times(1)).println(isA(String.class));
+    verify(sysOut).println(nodeStatusStr);
+  }
+  
+  @Test
+  public void testNodeStatusWithEmptyNodeLabels() throws Exception {
     NodeId nodeId = NodeId.newInstance("host0", 0);
     NodeCLI cli = new NodeCLI();
     when(client.getNodeReports()).thenReturn(
@@ -1137,6 +1171,7 @@ public class TestYarnCLI {
     pw.println("\tMemory-Capacity : 0MB");
     pw.println("\tCPU-Used : 0 vcores");
     pw.println("\tCPU-Capacity : 0 vcores");
+    pw.println("\tNode-Labels : ");
     pw.close();
     String nodeStatusStr = baos.toString("UTF-8");
     verify(sysOut, times(1)).println(isA(String.class));
@@ -1206,15 +1241,26 @@ public class TestYarnCLI {
     cli.run(new String[] { "application" });
     verify(sysErr).println("Invalid Command Usage : ");
   }
-
+  
   private List<NodeReport> getNodeReports(int noOfNodes, NodeState state) {
+    return getNodeReports(noOfNodes, state, true);
+  }
+
+  private List<NodeReport> getNodeReports(int noOfNodes, NodeState state,
+      boolean emptyNodeLabel) {
     List<NodeReport> nodeReports = new ArrayList<NodeReport>();
 
     for (int i = 0; i < noOfNodes; i++) {
+      Set<String> nodeLabels = null;
+      if (!emptyNodeLabel) {
+        // node labels is not ordered, but when we output it, it should be
+        // ordered
+        nodeLabels = ImmutableSet.of("c", "b", "a", "x", "z", "y");
+      }
       NodeReport nodeReport = NodeReport.newInstance(NodeId
         .newInstance("host" + i, 0), state, "host" + 1 + ":8888",
           "rack1", Records.newRecord(Resource.class), Records
-              .newRecord(Resource.class), 0, "", 0, null);
+              .newRecord(Resource.class), 0, "", 0, nodeLabels);
       nodeReports.add(nodeReport);
     }
     return nodeReports;