YARN-10610. Add queuePath to RESTful API for CapacityScheduler consistent with FairScheduler queuePath. Contributed by Qi Zhu

hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/webapp/dao/CapacitySchedulerInfo.java

@@ -49,6 +49,7 @@ public class CapacitySchedulerInfo extends SchedulerInfo {
   protected float weight;
   protected float normalizedWeight;
   protected String queueName;
+  private String queuePath;
   protected CapacitySchedulerQueueInfoList queues;
   protected QueueCapacitiesInfo capacities;
   protected CapacitySchedulerHealthInfo health;
@@ -69,6 +70,7 @@ public CapacitySchedulerInfo() {
 
   public CapacitySchedulerInfo(CSQueue parent, CapacityScheduler cs) {
     this.queueName = parent.getQueueName();
+    this.queuePath = parent.getQueuePath();
     this.usedCapacity = parent.getUsedCapacity() * 100;
     this.capacity = parent.getCapacity() * 100;
     float max = parent.getMaximumCapacity();
@@ -134,6 +136,10 @@ public String getQueueName() {
     return this.queueName;
   }
 
+  public String getQueuePath() {
+    return this.queuePath;
+  }
+
   public ResourceInfo getMaximumAllocation() {
     return maximumAllocation;
   }

hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/webapp/dao/CapacitySchedulerQueueInfo.java

@@ -57,9 +57,7 @@ public class CapacitySchedulerQueueInfo {
   @XmlTransient
   static final float EPSILON = 1e-8f;
 
-  @XmlTransient
   protected String queuePath;
-
   protected float capacity;
   protected float usedCapacity;
   protected float maxCapacity;

hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/test/java/org/apache/hadoop/yarn/server/resourcemanager/webapp/TestRMWebServicesCapacitySched.java

@@ -84,9 +84,14 @@ private class QueueInfo {
     float absoluteUsedCapacity;
     int numApplications;
     String queueName;
+    private String queuePath;
     String state;
     boolean isAbsoluteResource;
     boolean autoCreateChildQueueEnabled;
+
+    public String getQueuePath() {
+      return queuePath;
+    }
   }
 
   private class LeafQueueInfo extends QueueInfo {
@@ -261,7 +266,8 @@ public void verifyClusterSchedulerXML(NodeList nodes) throws Exception {
           WebServicesTestUtils.getXmlFloat(element, "usedCapacity"),
           WebServicesTestUtils.getXmlFloat(element, "capacity"),
           WebServicesTestUtils.getXmlFloat(element, "maxCapacity"),
-          WebServicesTestUtils.getXmlString(element, "queueName"));
+          WebServicesTestUtils.getXmlString(element, "queueName"),
+          WebServicesTestUtils.getXmlString(element, "queuePath"));
 
       NodeList children = element.getChildNodes();
       for (int j = 0; j < children.getLength(); j++) {
@@ -306,6 +312,7 @@ public void verifySubQueueXML(Element qElem, String q,
     qi.numApplications =
         WebServicesTestUtils.getXmlInt(qElem, "numApplications");
     qi.queueName = WebServicesTestUtils.getXmlString(qElem, "queueName");
+    qi.queuePath = WebServicesTestUtils.getXmlString(qElem, "queuePath");
     qi.state = WebServicesTestUtils.getXmlString(qElem, "state");
     qi.autoCreateChildQueueEnabled = WebServicesTestUtils.getXmlBoolean(qElem,
         "autoCreateChildQueueEnabled");
@@ -362,11 +369,13 @@ private void verifyClusterScheduler(JSONObject json) throws JSONException,
     JSONObject info = json.getJSONObject("scheduler");
     assertEquals("incorrect number of elements in: " + info, 1, info.length());
     info = info.getJSONObject("schedulerInfo");
-    assertEquals("incorrect number of elements in: " + info, 18, info.length());
+    assertEquals("incorrect number of elements in: " + info, 19, info.length());
     verifyClusterSchedulerGeneric(info.getString("type"),
         (float) info.getDouble("usedCapacity"),
         (float) info.getDouble("capacity"),
-        (float) info.getDouble("maxCapacity"), info.getString("queueName"));
+        (float) info.getDouble("maxCapacity"),
+        info.getString("queueName"),
+        info.getString("queuePath"));
     JSONObject health = info.getJSONObject("health");
     assertNotNull(health);
     assertEquals("incorrect number of elements in: " + health, 3,
@@ -401,22 +410,24 @@ private void verifyClusterScheduler(JSONObject json) throws JSONException,
   }
 
   private void verifyClusterSchedulerGeneric(String type, float usedCapacity,
-      float capacity, float maxCapacity, String queueName) throws Exception {
+      float capacity, float maxCapacity, String queueName, String queuePath)
+      throws Exception {
 
     assertTrue("type doesn't match", "capacityScheduler".matches(type));
     assertEquals("usedCapacity doesn't match", 0, usedCapacity, 1e-3f);
     assertEquals("capacity doesn't match", 100, capacity, 1e-3f);
     assertEquals("maxCapacity doesn't match", 100, maxCapacity, 1e-3f);
     assertTrue("queueName doesn't match", "root".matches(queueName));
+    assertTrue("queuePath doesn't match", "root".matches(queuePath));
   }
 
   private void verifySubQueue(JSONObject info, String q,
       float parentAbsCapacity, float parentAbsMaxCapacity)
       throws JSONException, Exception {
-    int numExpectedElements = 33;
+    int numExpectedElements = 34;
     boolean isParentQueue = true;
     if (!info.has("queues")) {
-      numExpectedElements = 51;
+      numExpectedElements = 52;
       isParentQueue = false;
     }
     assertEquals("incorrect number of elements", numExpectedElements, info.length());
@@ -430,6 +441,7 @@ private void verifySubQueue(JSONObject info, String q,
     qi.absoluteUsedCapacity = (float) info.getDouble("absoluteUsedCapacity");
     qi.numApplications = info.getInt("numApplications");
     qi.queueName = info.getString("queueName");
+    qi.queuePath = info.getString("queuePath");
     qi.state = info.getString("state");
 
     verifySubQueueGeneric(q, qi, parentAbsCapacity, parentAbsMaxCapacity);
@@ -502,6 +514,8 @@ private void verifySubQueueGeneric(String q, QueueInfo info,
     assertEquals("numApplications doesn't match", 0, info.numApplications);
     assertTrue("queueName doesn't match, got: " + info.queueName
         + " expected: " + q, qshortName.matches(info.queueName));
+    assertTrue("queuePath doesn't match, got: " + info.getQueuePath()
+        + " expected: " + q, q.matches(info.getQueuePath()));
     assertTrue("state doesn't match",
         (csConf.getState(q).toString()).matches(info.state));
     if (q.equals("c")) {

hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/test/java/org/apache/hadoop/yarn/server/resourcemanager/webapp/TestRMWebServicesForCSWithPartitions.java

@@ -574,7 +574,7 @@ private void verifySchedulerInfoJson(JSONObject json)
     JSONObject info = json.getJSONObject("scheduler");
     assertEquals("incorrect number of elements", 1, info.length());
     info = info.getJSONObject("schedulerInfo");
-    assertEquals("incorrect number of elements", 18, info.length());
+    assertEquals("incorrect number of elements", 19, info.length());
     JSONObject capacitiesJsonObject = info.getJSONObject(CAPACITIES);
     JSONArray partitionsCapsArray =
         capacitiesJsonObject.getJSONArray(QUEUE_CAPACITIES_BY_PARTITION);