YARN-10237. Add isAbsoluteResource config for queue in scheduler response. Contributed by Prabhu Joseph

hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/scheduler/capacity/CapacitySchedulerConfiguration.java

@@ -377,7 +377,8 @@ public class CapacitySchedulerConfiguration extends ReservationSchedulerConfigur
 
   public static final String PATTERN_FOR_ABSOLUTE_RESOURCE = "^\\[[\\w\\.,\\-_=\\ /]+\\]$";
 
-  private static final Pattern RESOURCE_PATTERN = Pattern.compile(PATTERN_FOR_ABSOLUTE_RESOURCE);
+  public static final Pattern RESOURCE_PATTERN =
+      Pattern.compile(PATTERN_FOR_ABSOLUTE_RESOURCE);
 
   /**
    * Different resource types supported.

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

@@ -42,6 +42,11 @@ import org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.ParentQu
 import org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.PlanQueue;
 import org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.QueueCapacities;
 
+import static org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.
+    CapacitySchedulerConfiguration.RESOURCE_PATTERN;
+import static org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.
+    CapacitySchedulerConfiguration.CAPACITY;
+
 @XmlRootElement
 @XmlAccessorType(XmlAccessType.FIELD)
 @XmlSeeAlso({CapacitySchedulerLeafQueueInfo.class})
@@ -61,6 +66,7 @@ public class CapacitySchedulerQueueInfo {
   protected float absoluteUsedCapacity;
   protected int numApplications;
   protected String queueName;
+  protected boolean isAbsoluteResource;
   protected QueueState state;
   protected CapacitySchedulerQueueInfoList queues;
   protected ResourceInfo resourcesUsed;
@@ -151,6 +157,11 @@ public class CapacitySchedulerQueueInfo {
       orderingPolicyInfo = ((ParentQueue) q).getQueueOrderingPolicy()
           .getConfigName();
     }
+
+    String configuredCapacity = conf.get(
+        CapacitySchedulerConfiguration.getQueuePrefix(queuePath) + CAPACITY);
+    isAbsoluteResource = (configuredCapacity != null)
+        && RESOURCE_PATTERN.matcher(configuredCapacity).find();
   }
 
   protected void populateQueueResourceUsage(ResourceUsage queueResourceUsage) {
@@ -203,6 +214,10 @@ public class CapacitySchedulerQueueInfo {
     return pendingContainers;
   }
 
+  public boolean isAbsoluteResource() {
+    return isAbsoluteResource;
+  }
+
   public String getQueueName() {
     return this.queueName;
   }

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

@@ -20,6 +20,7 @@ package org.apache.hadoop.yarn.server.resourcemanager.webapp;
 
 import static org.junit.Assert.assertEquals;
 import static org.junit.Assert.assertNotNull;
+import static org.junit.Assert.assertFalse;
 import static org.junit.Assert.assertTrue;
 import static org.junit.Assert.fail;
 
@@ -79,6 +80,7 @@ public class TestRMWebServicesCapacitySched extends JerseyTestBase {
     int numApplications;
     String queueName;
     String state;
+    boolean isAbsoluteResource;
   }
 
   private class LeafQueueInfo extends QueueInfo {
@@ -131,6 +133,9 @@ public class TestRMWebServicesCapacitySched extends JerseyTestBase {
     final String B = CapacitySchedulerConfiguration.ROOT + ".b";
     config.setCapacity(B, 89.5f);
 
+    final String C = CapacitySchedulerConfiguration.ROOT + ".c";
+    config.setCapacity(C, "[memory=1024]");
+
     // Define 2nd-level queues
     final String A1 = A + ".a1";
     final String A2 = A + ".a2";
@@ -290,6 +295,8 @@ public class TestRMWebServicesCapacitySched extends JerseyTestBase {
         WebServicesTestUtils.getXmlInt(qElem, "numApplications");
     qi.queueName = WebServicesTestUtils.getXmlString(qElem, "queueName");
     qi.state = WebServicesTestUtils.getXmlString(qElem, "state");
+    qi.isAbsoluteResource = WebServicesTestUtils.getXmlBoolean(qElem,
+        "isAbsoluteResource");
     verifySubQueueGeneric(q, qi, parentAbsCapacity, parentAbsMaxCapacity);
     if (hasSubQueues) {
       for (int j = 0; j < children.getLength(); j++) {
@@ -384,10 +391,10 @@ public class TestRMWebServicesCapacitySched extends JerseyTestBase {
   private void verifySubQueue(JSONObject info, String q,
       float parentAbsCapacity, float parentAbsMaxCapacity)
       throws JSONException, Exception {
-    int numExpectedElements = 24;
+    int numExpectedElements = 25;
     boolean isParentQueue = true;
     if (!info.has("queues")) {
-      numExpectedElements = 42;
+      numExpectedElements = 43;
       isParentQueue = false;
     }
     assertEquals("incorrect number of elements", numExpectedElements, info.length());
@@ -471,6 +478,14 @@ public class TestRMWebServicesCapacitySched extends JerseyTestBase {
         + " expected: " + q, qshortName.matches(info.queueName));
     assertTrue("state doesn't match",
         (csConf.getState(q).toString()).matches(info.state));
+    if (q.equals("c")) {
+      assertTrue("c queue is not configured in Absolute resource",
+          info.isAbsoluteResource);
+    } else {
+      assertFalse(info.queueName
+          + " queue is not configured in Absolute resource",
+          info.isAbsoluteResource);
+    }
 
   }