YARN-10364. Fix logic of queue capacity is absolute resource or percentage.

Contributed by Bilwa ST. Reviewed by Sunil G.

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

@@ -84,6 +84,14 @@ public class AbstractAutoCreatedLeafQueue extends LeafQueue {
         label);
   }
 
+  @Override
+  protected boolean checkConfigTypeIsAbsoluteResource(String queuePath,
+      String label) {
+    return super.checkConfigTypeIsAbsoluteResource(csContext.getConfiguration()
+        .getAutoCreatedQueueTemplateConfPrefix(this.getParent().getQueuePath()),
+        label);
+  }
+
   /**
    * This methods to change capacity for a queue and adjusts its
    * absoluteCapacity

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

@@ -542,6 +542,12 @@ public abstract class AbstractCSQueue implements CSQueue {
     return maxResource;
   }
 
+  protected boolean checkConfigTypeIsAbsoluteResource(String queuePath,
+      String label) {
+    return csContext.getConfiguration().checkConfigTypeIsAbsoluteResource(label,
+        queuePath, resourceTypes);
+  }
+
   protected void updateConfigurableResourceRequirement(String queuePath,
       Resource clusterResource) {
     CapacitySchedulerConfiguration conf = csContext.getConfiguration();
@@ -554,17 +560,18 @@ public abstract class AbstractCSQueue implements CSQueue {
       LOG.debug("capacityConfigType is '{}' for queue {}",
           capacityConfigType, getQueuePath());
 
+      CapacityConfigType localType = checkConfigTypeIsAbsoluteResource(
+          queuePath, label) ? CapacityConfigType.ABSOLUTE_RESOURCE
+              : CapacityConfigType.PERCENTAGE;
+
       if (this.capacityConfigType.equals(CapacityConfigType.NONE)) {
-        this.capacityConfigType = (!minResource.equals(Resources.none())
-            && queueCapacities.getAbsoluteCapacity(label) == 0f)
-                ? CapacityConfigType.ABSOLUTE_RESOURCE
-                : CapacityConfigType.PERCENTAGE;
+        this.capacityConfigType = localType;
         LOG.debug("capacityConfigType is updated as '{}' for queue {}",
             capacityConfigType, getQueuePath());
+      } else {
+        validateAbsoluteVsPercentageCapacityConfig(localType);
       }
 
-      validateAbsoluteVsPercentageCapacityConfig(minResource);
-
       // If min resource for a resource type is greater than its max resource,
       // throw exception to handle such error configs.
       if (!maxResource.equals(Resources.none()) && Resources.greaterThan(
@@ -607,12 +614,7 @@ public abstract class AbstractCSQueue implements CSQueue {
   }
 
   private void validateAbsoluteVsPercentageCapacityConfig(
-      Resource minResource) {
-    CapacityConfigType localType = CapacityConfigType.PERCENTAGE;
-    if (!minResource.equals(Resources.none())) {
-      localType = CapacityConfigType.ABSOLUTE_RESOURCE;
-    }
-
+      CapacityConfigType localType) {
     if (!queuePath.equals("root")
         && !this.capacityConfigType.equals(localType)) {
       throw new IllegalArgumentException("Queue '" + getQueuePath()

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

@@ -2166,6 +2166,21 @@ public class CapacitySchedulerConfiguration extends ReservationSchedulerConfigur
     set(prefix, resourceString.toString());
   }
 
+  public boolean checkConfigTypeIsAbsoluteResource(String label, String queue,
+      Set<String> resourceTypes) {
+    String propertyName = getNodeLabelPrefix(queue, label) + CAPACITY;
+    String resourceString = get(propertyName);
+    if (resourceString == null || resourceString.isEmpty()) {
+      return false;
+    }
+
+    Matcher matcher = RESOURCE_PATTERN.matcher(resourceString);
+    if (matcher.find()) {
+      return true;
+    }
+    return false;
+  }
+
   private Resource internalGetLabeledResourceRequirementForQueue(String queue,
       String label, Set<String> resourceTypes, String suffix) {
     String propertyName = getNodeLabelPrefix(queue, label) + suffix;

hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/test/java/org/apache/hadoop/yarn/server/resourcemanager/scheduler/capacity/TestAbsoluteResourceConfiguration.java

@@ -524,6 +524,57 @@ public class TestAbsoluteResourceConfiguration {
     }
   }
 
+  @Test
+  public void testValidateAbsoluteResourceConfig() throws Exception {
+    /**
+     * Queue structure is as follows. root / a / \ a1 a2
+     *
+     * Test below cases: 1) Test ConfigType when resource is [memory=0]
+     */
+
+    // create conf with basic queue configuration.
+    CapacitySchedulerConfiguration csConf =
+        new CapacitySchedulerConfiguration();
+    csConf.setQueues(CapacitySchedulerConfiguration.ROOT,
+        new String[] {QUEUEA, QUEUEB});
+    csConf.setQueues(QUEUEA_FULL, new String[] {QUEUEA1, QUEUEA2});
+
+    // Set default capacities like normal configuration.
+    csConf.setCapacity(QUEUEA_FULL, "[memory=125]");
+    csConf.setCapacity(QUEUEB_FULL, "[memory=0]");
+    csConf.setCapacity(QUEUEA1_FULL, "[memory=100]");
+    csConf.setCapacity(QUEUEA2_FULL, "[memory=25]");
+
+    // Update min/max resource to queueA
+    csConf.setMinimumResourceRequirement("", QUEUEA_FULL, QUEUE_A_MINRES);
+    csConf.setMaximumResourceRequirement("", QUEUEA_FULL, QUEUE_A_MAXRES);
+
+    csConf.setClass(YarnConfiguration.RM_SCHEDULER, CapacityScheduler.class,
+        ResourceScheduler.class);
+
+    @SuppressWarnings("resource")
+    MockRM rm = new MockRM(csConf);
+    rm.start();
+
+    // Add few nodes
+    rm.registerNode("127.0.0.1:1234", 125 * GB, 20);
+
+    // Set [memory=0] to one of the queue and see if reinitialization
+    // doesnt throw exception saying "Parent queue 'root.A' and
+    // child queue 'root.A.A2' should use either percentage
+    // based capacityconfiguration or absolute resource together for label"
+    csConf.setCapacity(QUEUEA1_FULL, "[memory=125]");
+    csConf.setCapacity(QUEUEA2_FULL, "[memory=0]");
+
+    // Get queue object to verify min/max resource configuration.
+    CapacityScheduler cs = (CapacityScheduler) rm.getResourceScheduler();
+    try {
+      cs.reinitialize(csConf, rm.getRMContext());
+    } catch (IOException e) {
+      Assert.fail(e.getMessage());
+    }
+  }
+
   @Test
   public void testEffectiveResourceAfterReducingClusterResource()
       throws Exception {