Merge -c 1235858 from trunk to branch-0.23 to fix MAPREDUCE-3683. Fixed maxCapacity of queues to be product of parent maxCapacities.

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-0.23@1235860 13f79535-47bb-0310-9956-ffa450edef68

hadoop-mapreduce-project/CHANGES.txt

@@ -513,6 +513,9 @@ Release 0.23.1 - Unreleased
     MAPREDUCE-3630. Fixes a NullPointer exception while running TeraGen - if a
     map is asked to generate 0 records. (Mahadev Konar via sseth)
 
+    MAPREDUCE-3683. Fixed maxCapacity of queues to be product of parent
+    maxCapacities. (acmurthy)
+
 Release 0.23.0 - 2011-11-01 
 
   INCOMPATIBLE CHANGES

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

@@ -17,12 +17,19 @@
 */
 package org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity;
 
+import org.apache.hadoop.yarn.api.records.Resource;
+
 class CSQueueUtils {
   
   public static void checkMaxCapacity(String queueName, 
       float capacity, float maximumCapacity) {
-    if (Math.round(100 * maximumCapacity) != CapacitySchedulerConfiguration.UNDEFINED && 
+    if (maximumCapacity < 0.0f || maximumCapacity > 1.0f || 
         maximumCapacity < capacity) {
+      throw new IllegalArgumentException(
+          "Illegal value  of maximumCapacity " + maximumCapacity + 
+          " used in call to setMaxCapacity for queue " + queueName);
+    }
+    if (maximumCapacity < capacity) {
       throw new IllegalArgumentException(
           "Illegal call to setMaxCapacity. " +
           "Queue '" + queueName + "' has " +
@@ -30,5 +37,26 @@ class CSQueueUtils {
           "maximumCapacity (" + maximumCapacity + ")" );
     }
   }
+
+  public static float computeAbsoluteMaximumCapacity(
+      float maximumCapacity, CSQueue parent) {
+    float parentAbsMaxCapacity = 
+        (parent == null) ? 1.0f : parent.getAbsoluteMaximumCapacity();
+    return (parentAbsMaxCapacity * maximumCapacity);
+  }
+
+  public static int computeMaxActiveApplications(Resource clusterResource,
+      float maxAMResourcePercent, float absoluteCapacity) {
+    return 
+        Math.max(
+            (int)((clusterResource.getMemory() / (float)LeafQueue.DEFAULT_AM_RESOURCE) * 
+                   maxAMResourcePercent * absoluteCapacity), 
+            1);
+  }
+
+  public static int computeMaxActiveApplicationsPerUser(
+      int maxActiveApplications, int userLimit, float userLimitFactor) {
+    return (int)(maxActiveApplications * (userLimit / 100.0f) * userLimitFactor);
+  }
   
 }

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

@@ -149,7 +149,7 @@ public class CapacitySchedulerConfiguration extends Configuration {
       throw new IllegalArgumentException("Illegal " +
       		"capacity of " + capacity + " for queue " + queue);
     }
-    LOG.debug("CSConf - setCapacity: queuePrefix=" + getQueuePrefix(queue) + 
+    LOG.debug("CSConf - getCapacity: queuePrefix=" + getQueuePrefix(queue) + 
         ", capacity=" + capacity);
     return capacity;
   }
@@ -162,11 +162,15 @@ public class CapacitySchedulerConfiguration extends Configuration {
 
   public int getMaximumCapacity(String queue) {
     int maxCapacity = 
-      getInt(getQueuePrefix(queue) + MAXIMUM_CAPACITY, UNDEFINED);
+      getInt(getQueuePrefix(queue) + MAXIMUM_CAPACITY, MAXIMUM_CAPACITY_VALUE);
     return maxCapacity;
   }
   
   public void setMaximumCapacity(String queue, int maxCapacity) {
+    if (maxCapacity > MAXIMUM_CAPACITY_VALUE) {
+      throw new IllegalArgumentException("Illegal " +
+          "maximum-capacity of " + maxCapacity + " for queue " + queue);
+    }
     setInt(getQueuePrefix(queue) + MAXIMUM_CAPACITY, maxCapacity);
     LOG.debug("CSConf - setMaxCapacity: queuePrefix=" + getQueuePrefix(queue) + 
         ", maxCapacity=" + maxCapacity);

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

@@ -144,10 +144,10 @@ public class LeafQueue implements CSQueue {
       (float)cs.getConfiguration().getCapacity(getQueuePath()) / 100;
     float absoluteCapacity = parent.getAbsoluteCapacity() * capacity;
 
-    float maximumCapacity = (float)cs.getConfiguration().getMaximumCapacity(getQueuePath()) / 100;
+    float maximumCapacity = 
+        (float)cs.getConfiguration().getMaximumCapacity(getQueuePath()) / 100;
     float absoluteMaxCapacity = 
-      (Math.round(maximumCapacity * 100) == CapacitySchedulerConfiguration.UNDEFINED) ? 
+        CSQueueUtils.computeAbsoluteMaximumCapacity(maximumCapacity, parent);
-          Float.MAX_VALUE : (parent.getAbsoluteCapacity() * maximumCapacity);
 
     int userLimit = cs.getConfiguration().getUserLimit(getQueuePath());
     float userLimitFactor = 
@@ -161,10 +161,10 @@ public class LeafQueue implements CSQueue {
     this.maxAMResourcePercent = 
         cs.getConfiguration().getMaximumApplicationMasterResourcePercent();
     int maxActiveApplications = 
-        computeMaxActiveApplications(cs.getClusterResources(), 
+        CSQueueUtils.computeMaxActiveApplications(cs.getClusterResources(), 
             maxAMResourcePercent, absoluteCapacity);
     int maxActiveApplicationsPerUser = 
-        computeMaxActiveApplicationsPerUser(maxActiveApplications, userLimit, 
+        CSQueueUtils.computeMaxActiveApplicationsPerUser(maxActiveApplications, userLimit, 
             userLimitFactor);
 
     this.queueInfo = recordFactory.newRecordInstance(QueueInfo.class);
@@ -193,20 +193,6 @@ public class LeafQueue implements CSQueue {
     this.activeApplications = new TreeSet<SchedulerApp>(applicationComparator);
   }
 
-  private int computeMaxActiveApplications(Resource clusterResource,
-      float maxAMResourcePercent, float absoluteCapacity) {
-    return 
-        Math.max(
-            (int)((clusterResource.getMemory() / (float)DEFAULT_AM_RESOURCE) * 
-                   maxAMResourcePercent * absoluteCapacity), 
-            1);
-  }
-  
-  private int computeMaxActiveApplicationsPerUser(int maxActiveApplications, 
-      int userLimit, float userLimitFactor) {
-    return (int)(maxActiveApplications * (userLimit / 100.0f) * userLimitFactor);
-  }
-  
   private synchronized void setupQueueConfigs(
       float capacity, float absoluteCapacity, 
       float maximumCapacity, float absoluteMaxCapacity,
@@ -254,8 +240,8 @@ public class LeafQueue implements CSQueue {
         "maxCapacity = " + maximumCapacity +
         " [= configuredMaxCapacity ]" + "\n" +
         "absoluteMaxCapacity = " + absoluteMaxCapacity +
-        " [= Float.MAX_VALUE if maximumCapacity undefined, " +
+        " [= 1.0 maximumCapacity undefined, " +
-        "(parentAbsoluteCapacity * maximumCapacity) / 100 otherwise ]" + "\n" +
+        "(parentAbsoluteMaxCapacity * maximumCapacity) / 100 otherwise ]" + "\n" +
         "userLimit = " + userLimit +
         " [= configuredUserLimit ]" + "\n" +
         "userLimitFactor = " + userLimitFactor +
@@ -400,9 +386,7 @@ public class LeafQueue implements CSQueue {
     
     this.maximumCapacity = maximumCapacity;
     this.absoluteMaxCapacity = 
-      (Math.round(maximumCapacity * 100) == CapacitySchedulerConfiguration.UNDEFINED) ? 
+        CSQueueUtils.computeAbsoluteMaximumCapacity(maximumCapacity, parent);
-          Float.MAX_VALUE : 
-          (parent.getAbsoluteCapacity() * maximumCapacity);
   }
   
   /**
@@ -835,13 +819,14 @@ public class LeafQueue implements CSQueue {
     float potentialNewCapacity = 
       (float)(usedResources.getMemory() + required.getMemory()) / 
         clusterResource.getMemory();
-    LOG.info(getQueueName() + 
-        " usedResources: " + usedResources.getMemory() + 
-        " currentCapacity " + ((float)usedResources.getMemory())/clusterResource.getMemory() + 
-        " required " + required.getMemory() +
-        " potentialNewCapacity: " + potentialNewCapacity + " ( " +
-        " max-capacity: " + absoluteMaxCapacity + ")");
     if (potentialNewCapacity > absoluteMaxCapacity) {
+      LOG.info(getQueueName() + 
+          " usedResources: " + usedResources.getMemory() +
+          " clusterResources: " + clusterResource.getMemory() +
+          " currentCapacity " + ((float)usedResources.getMemory())/clusterResource.getMemory() + 
+          " required " + required.getMemory() +
+          " potentialNewCapacity: " + potentialNewCapacity + " ( " +
+          " max-capacity: " + absoluteMaxCapacity + ")");
       return false;
     }
     return true;
@@ -1308,10 +1293,10 @@ public class LeafQueue implements CSQueue {
   public synchronized void updateClusterResource(Resource clusterResource) {
     // Update queue properties
     maxActiveApplications = 
-        computeMaxActiveApplications(clusterResource, maxAMResourcePercent, 
+        CSQueueUtils.computeMaxActiveApplications(clusterResource, maxAMResourcePercent, 
             absoluteCapacity);
     maxActiveApplicationsPerUser = 
-        computeMaxActiveApplicationsPerUser(maxActiveApplications, userLimit, 
+        CSQueueUtils.computeMaxActiveApplicationsPerUser(maxActiveApplications, userLimit, 
             userLimitFactor);
     
     // Update application properties

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

@@ -118,16 +118,14 @@ public class ParentQueue implements CSQueue {
     }
 
     float capacity = (float) rawCapacity / 100;
-
     float parentAbsoluteCapacity = 
-      (parent == null) ? 1.0f : parent.getAbsoluteCapacity();
+      (rootQueue) ? 1.0f : parent.getAbsoluteCapacity();
     float absoluteCapacity = parentAbsoluteCapacity * capacity; 
 
-    float maximumCapacity = 
+    float  maximumCapacity =
       (float) cs.getConfiguration().getMaximumCapacity(getQueuePath()) / 100;
     float absoluteMaxCapacity = 
-      (Math.round(maximumCapacity * 100) == CapacitySchedulerConfiguration.UNDEFINED) ? 
+          CSQueueUtils.computeAbsoluteMaximumCapacity(maximumCapacity, parent);
-          Float.MAX_VALUE :  (parentAbsoluteCapacity * maximumCapacity);
     
     QueueState state = cs.getConfiguration().getState(getQueuePath());
 
@@ -497,12 +495,8 @@ public class ParentQueue implements CSQueue {
     CSQueueUtils.checkMaxCapacity(getQueueName(), capacity, maximumCapacity);
     
     this.maximumCapacity = maximumCapacity;
-    float parentAbsoluteCapacity = 
-        (rootQueue) ? 100.0f : parent.getAbsoluteCapacity();
     this.absoluteMaxCapacity = 
-      (maximumCapacity == CapacitySchedulerConfiguration.UNDEFINED) ? 
+        CSQueueUtils.computeAbsoluteMaximumCapacity(maximumCapacity, parent);
-          Float.MAX_VALUE : 
-          (parentAbsoluteCapacity * maximumCapacity);
   }
 
   @Override

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

@@ -255,7 +255,7 @@ public class TestLeafQueue {
     // Manipulate queue 'a'
     LeafQueue a = stubLeafQueue((LeafQueue)queues.get(A));
     //unset maxCapacity
-    a.setMaxCapacity(-0.01f);
+    a.setMaxCapacity(1.0f);
 
     // Users
     final String user_0 = "user_0";
@@ -377,7 +377,7 @@ public class TestLeafQueue {
     // Mock the queue
     LeafQueue a = stubLeafQueue((LeafQueue)queues.get(A));
     //unset maxCapacity
-    a.setMaxCapacity(-0.01f);
+    a.setMaxCapacity(1.0f);
     
     // Users
     final String user_0 = "user_0";
@@ -491,7 +491,7 @@ public class TestLeafQueue {
     
     // Revert max-capacity and user-limit-factor
     // Now, allocations should goto app_3 since it's under user-limit 
-    a.setMaxCapacity(-0.01f);
+    a.setMaxCapacity(1.0f);
     a.setUserLimitFactor(1);
     a.assignContainers(clusterResource, node_0);
     assertEquals(7*GB, a.getUsedResources().getMemory()); 
@@ -548,7 +548,7 @@ public class TestLeafQueue {
     // Manipulate queue 'a'
     LeafQueue a = stubLeafQueue((LeafQueue)queues.get(A));
     //unset maxCapacity
-    a.setMaxCapacity(-0.01f);
+    a.setMaxCapacity(1.0f);
 
     // Users
     final String user_0 = "user_0";
@@ -571,7 +571,7 @@ public class TestLeafQueue {
     String host_0 = "host_0";
     SchedulerNode node_0 = TestUtils.getMockNode(host_0, DEFAULT_RACK, 0, 4*GB);
     
-    final int numNodes = 1;
+    final int numNodes = 2;
     Resource clusterResource = Resources.createResource(numNodes * (4*GB));
     when(csContext.getNumClusterNodes()).thenReturn(numNodes);
     
@@ -646,7 +646,7 @@ public class TestLeafQueue {
     // Manipulate queue 'a'
     LeafQueue a = stubLeafQueue((LeafQueue)queues.get(A));
     //unset maxCapacity
-    a.setMaxCapacity(-0.01f);
+    a.setMaxCapacity(1.0f);
     a.setUserLimitFactor(10);
 
     // Users
@@ -673,7 +673,7 @@ public class TestLeafQueue {
     String host_1 = "host_1";
     SchedulerNode node_1 = TestUtils.getMockNode(host_1, DEFAULT_RACK, 0, 4*GB);
     
-    final int numNodes = 2;
+    final int numNodes = 3;
     Resource clusterResource = Resources.createResource(numNodes * (4*GB));
     when(csContext.getNumClusterNodes()).thenReturn(numNodes);
     when(csContext.getMaximumResourceCapability()).thenReturn(

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

@@ -30,6 +30,8 @@ public class TestQueueParsing {
 
   private static final Log LOG = LogFactory.getLog(TestQueueParsing.class);
   
+  private static final double DELTA = 0.000001;
+  
   @Test
   public void testQueueParsing() throws Exception {
     CapacitySchedulerConfiguration conf = new CapacitySchedulerConfiguration();
@@ -37,6 +39,20 @@ public class TestQueueParsing {
 
     CapacityScheduler capacityScheduler = new CapacityScheduler();
     capacityScheduler.reinitialize(conf, null, null);
+    
+    CSQueue a = capacityScheduler.getQueue("a");
+    Assert.assertEquals(0.10, a.getAbsoluteCapacity(), DELTA);
+    Assert.assertEquals(0.15, a.getAbsoluteMaximumCapacity(), DELTA);
+    
+    CSQueue b1 = capacityScheduler.getQueue("b1");
+    Assert.assertEquals(0.2 * 0.5, b1.getAbsoluteCapacity(), DELTA);
+    Assert.assertEquals("Parent B has no MAX_CAP", 
+        0.85, b1.getAbsoluteMaximumCapacity(), DELTA);
+    
+    CSQueue c12 = capacityScheduler.getQueue("c12");
+    Assert.assertEquals(0.7 * 0.5 * 0.45, c12.getAbsoluteCapacity(), DELTA);
+    Assert.assertEquals(0.7 * 0.55 * 0.7, 
+        c12.getAbsoluteMaximumCapacity(), DELTA);
   }
   
   private void setupQueueConfiguration(CapacitySchedulerConfiguration conf) {
@@ -47,12 +63,14 @@ public class TestQueueParsing {
     
     final String A = CapacitySchedulerConfiguration.ROOT + ".a";
     conf.setCapacity(A, 10);
+    conf.setMaximumCapacity(A, 15);
     
     final String B = CapacitySchedulerConfiguration.ROOT + ".b";
     conf.setCapacity(B, 20);
-
+    
     final String C = CapacitySchedulerConfiguration.ROOT + ".c";
     conf.setCapacity(C, 70);
+    conf.setMaximumCapacity(C, 70);
 
     LOG.info("Setup top-level queues");
     
@@ -61,15 +79,20 @@ public class TestQueueParsing {
     final String A2 = A + ".a2";
     conf.setQueues(A, new String[] {"a1", "a2"});
     conf.setCapacity(A1, 30);
+    conf.setMaximumCapacity(A1, 45);
     conf.setCapacity(A2, 70);
+    conf.setMaximumCapacity(A2, 85);
     
     final String B1 = B + ".b1";
     final String B2 = B + ".b2";
     final String B3 = B + ".b3";
     conf.setQueues(B, new String[] {"b1", "b2", "b3"});
     conf.setCapacity(B1, 50);
+    conf.setMaximumCapacity(B1, 85);
     conf.setCapacity(B2, 30);
+    conf.setMaximumCapacity(B2, 35);
     conf.setCapacity(B3, 20);
+    conf.setMaximumCapacity(B3, 35);
 
     final String C1 = C + ".c1";
     final String C2 = C + ".c2";
@@ -77,9 +100,13 @@ public class TestQueueParsing {
     final String C4 = C + ".c4";
     conf.setQueues(C, new String[] {"c1", "c2", "c3", "c4"});
     conf.setCapacity(C1, 50);
+    conf.setMaximumCapacity(C1, 55);
     conf.setCapacity(C2, 10);
+    conf.setMaximumCapacity(C2, 25);
     conf.setCapacity(C3, 35);
+    conf.setMaximumCapacity(C3, 38);
     conf.setCapacity(C4, 5);
+    conf.setMaximumCapacity(C4, 5);
     
     LOG.info("Setup 2nd-level queues");
     
@@ -89,8 +116,11 @@ public class TestQueueParsing {
     final String C13 = C1 + ".c13";
     conf.setQueues(C1, new String[] {"c11", "c12", "c13"});
     conf.setCapacity(C11, 15);
+    conf.setMaximumCapacity(C11, 30);
     conf.setCapacity(C12, 45);
+    conf.setMaximumCapacity(C12, 70);
     conf.setCapacity(C13, 40);
+    conf.setMaximumCapacity(C13, 40);
     
     LOG.info("Setup 3rd-level queues");
   }

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

@@ -235,12 +235,13 @@ public class TestRMWebServicesCapacitySched extends JerseyTest {
         Element qElem = (Element) queues.item(j);
         String qName = WebServicesTestUtils.getXmlString(qElem, "queueName");
         String q = CapacitySchedulerConfiguration.ROOT + "." + qName;
-        verifySubQueueXML(qElem, q, 100);
+        verifySubQueueXML(qElem, q, 100, 100);
       }
     }
   }
 
-  public void verifySubQueueXML(Element qElem, String q, float parentAbsCapacity)
+  public void verifySubQueueXML(Element qElem, String q, 
+      float parentAbsCapacity, float parentAbsMaxCapacity)
       throws Exception {
     NodeList queues = qElem.getElementsByTagName("subQueues");
     QueueInfo qi = (queues != null) ? new QueueInfo() : new LeafQueueInfo();
@@ -258,14 +259,15 @@ public class TestRMWebServicesCapacitySched extends JerseyTest {
         WebServicesTestUtils.getXmlString(qElem, "usedResources");
     qi.queueName = WebServicesTestUtils.getXmlString(qElem, "queueName");
     qi.state = WebServicesTestUtils.getXmlString(qElem, "state");
-    verifySubQueueGeneric(q, qi, parentAbsCapacity);
+    verifySubQueueGeneric(q, qi, parentAbsCapacity, parentAbsMaxCapacity);
 
     if (queues != null) {
       for (int j = 0; j < queues.getLength(); j++) {
         Element subqElem = (Element) queues.item(j);
         String qName = WebServicesTestUtils.getXmlString(subqElem, "queueName");
         String q2 = q + "." + qName;
-        verifySubQueueXML(subqElem, q2, qi.absoluteCapacity);
+        verifySubQueueXML(subqElem, q2, 
+            qi.absoluteCapacity, qi.absoluteMaxCapacity);
       }
     } else {
       LeafQueueInfo lqi = (LeafQueueInfo) qi;
@@ -309,7 +311,7 @@ public class TestRMWebServicesCapacitySched extends JerseyTest {
     for (int i = 0; i < arr.length(); i++) {
       JSONObject obj = arr.getJSONObject(i);
       String q = CapacitySchedulerConfiguration.ROOT + "." + obj.getString("queueName");
-      verifySubQueue(obj, q, 100);
+      verifySubQueue(obj, q, 100, 100);
     }
   }
 
@@ -323,7 +325,8 @@ public class TestRMWebServicesCapacitySched extends JerseyTest {
     assertTrue("queueName doesn't match", "root".matches(queueName));
   }
 
-  private void verifySubQueue(JSONObject info, String q, float parentAbsCapacity)
+  private void verifySubQueue(JSONObject info, String q, 
+      float parentAbsCapacity, float parentAbsMaxCapacity)
       throws JSONException, Exception {
     int numExpectedElements = 11;
     boolean isParentQueue = true;
@@ -345,7 +348,7 @@ public class TestRMWebServicesCapacitySched extends JerseyTest {
     qi.queueName = info.getString("queueName");
     qi.state = info.getString("state");
 
-    verifySubQueueGeneric(q, qi, parentAbsCapacity);
+    verifySubQueueGeneric(q, qi, parentAbsCapacity, parentAbsMaxCapacity);
 
     if (isParentQueue) {
       JSONArray arr = info.getJSONArray("subQueues");
@@ -353,7 +356,7 @@ public class TestRMWebServicesCapacitySched extends JerseyTest {
       for (int i = 0; i < arr.length(); i++) {
         JSONObject obj = arr.getJSONObject(i);
         String q2 = q + "." + obj.getString("queueName");
-        verifySubQueue(obj, q2, qi.absoluteCapacity);
+        verifySubQueue(obj, q2, qi.absoluteCapacity, qi.absoluteMaxCapacity);
       }
     } else {
       LeafQueueInfo lqi = (LeafQueueInfo) qi;
@@ -371,7 +374,7 @@ public class TestRMWebServicesCapacitySched extends JerseyTest {
   }
 
   private void verifySubQueueGeneric(String q, QueueInfo info,
-      float parentAbsCapacity) throws Exception {
+      float parentAbsCapacity, float parentAbsMaxCapacity) throws Exception {
     String[] qArr = q.split("\\.");
     assertTrue("q name invalid: " + q, qArr.length > 1);
     String qshortName = qArr[qArr.length - 1];
@@ -380,7 +383,7 @@ public class TestRMWebServicesCapacitySched extends JerseyTest {
     assertEquals("capacity doesn't match", csConf.getCapacity(q),
         info.capacity, 1e-3f);
     float expectCapacity = csConf.getMaximumCapacity(q);
-    float expectAbsMaxCapacity = parentAbsCapacity * (info.maxCapacity/100);
+    float expectAbsMaxCapacity = parentAbsMaxCapacity * (info.maxCapacity/100);
     if (CapacitySchedulerConfiguration.UNDEFINED == expectCapacity) {
       expectCapacity = 100;
       expectAbsMaxCapacity = 100;