MAPREDUCE-4299. Terasort hangs with MR2 FifoScheduler (Tom White via bobby)

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1361397 13f79535-47bb-0310-9956-ffa450edef68

hadoop-mapreduce-project/CHANGES.txt

@@ -685,6 +685,9 @@ Release 0.23.3 - UNRELEASED
     MAPREDUCE-4419. ./mapred queue -info <queuename> -showJobs displays all
     the jobs irrespective of <queuename> (Devaraj K via bobby)
 
+    MAPREDUCE-4299. Terasort hangs with MR2 FifoScheduler (Tom White via
+    bobby)
+
 Release 0.23.2 - UNRELEASED
 
   INCOMPATIBLE CHANGES

hadoop-mapreduce-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/scheduler/fifo/FifoScheduler.java

@@ -372,16 +372,20 @@ public class FifoScheduler implements ResourceScheduler, Configurable {
         }
       }
       
-      application.setHeadroom(clusterResource);
-      
       LOG.debug("post-assignContainers");
       application.showRequests();
 
       // Done
       if (Resources.lessThan(node.getAvailableResource(), minimumAllocation)) {
-        return;
+        break;
       }
     }
+
+    // Update the applications' headroom to correctly take into
+    // account the containers assigned in this update.
+    for (SchedulerApp application : applications.values()) {
+      application.setHeadroom(Resources.subtract(clusterResource, usedResource));
+    }
   }
 
   private int getMaxAllocatableContainers(SchedulerApp application,

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

@@ -19,26 +19,39 @@
 package org.apache.hadoop.yarn.server.resourcemanager;
 
 import java.util.ArrayList;
+import java.util.Collections;
 import java.util.List;
 
 import junit.framework.Assert;
 
 import org.apache.commons.logging.Log;
 import org.apache.commons.logging.LogFactory;
+import org.apache.hadoop.conf.Configuration;
 import org.apache.hadoop.yarn.api.records.AMResponse;
+import org.apache.hadoop.yarn.api.records.ApplicationAttemptId;
+import org.apache.hadoop.yarn.api.records.ApplicationId;
 import org.apache.hadoop.yarn.api.records.Container;
+import org.apache.hadoop.yarn.api.records.ContainerId;
 import org.apache.hadoop.yarn.api.records.ContainerState;
 import org.apache.hadoop.yarn.api.records.ContainerStatus;
+import org.apache.hadoop.yarn.api.records.ResourceRequest;
 import org.apache.hadoop.yarn.conf.YarnConfiguration;
 import org.apache.hadoop.yarn.server.resourcemanager.rmapp.RMApp;
 import org.apache.hadoop.yarn.server.resourcemanager.rmapp.attempt.RMAppAttempt;
 import org.apache.hadoop.yarn.server.resourcemanager.rmnode.RMNode;
+import org.apache.hadoop.yarn.server.resourcemanager.rmnode.RMNodeImpl;
+import org.apache.hadoop.yarn.server.resourcemanager.scheduler.Allocation;
+import org.apache.hadoop.yarn.server.resourcemanager.scheduler.ResourceScheduler;
 import org.apache.hadoop.yarn.server.resourcemanager.scheduler.SchedulerNodeReport;
 import org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.CapacitySchedulerConfiguration;
+import org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.TestUtils;
+import org.apache.hadoop.yarn.server.resourcemanager.scheduler.event.AppAddedSchedulerEvent;
 import org.apache.hadoop.yarn.server.resourcemanager.scheduler.event.NodeAddedSchedulerEvent;
 import org.apache.hadoop.yarn.server.resourcemanager.scheduler.event.NodeRemovedSchedulerEvent;
 import org.apache.hadoop.yarn.server.resourcemanager.scheduler.event.NodeUpdateSchedulerEvent;
+import org.apache.hadoop.yarn.server.resourcemanager.scheduler.event.SchedulerEvent;
 import org.apache.hadoop.yarn.server.resourcemanager.scheduler.fifo.FifoScheduler;
+import org.apache.hadoop.yarn.util.BuilderUtils;
 import org.apache.log4j.Level;
 import org.apache.log4j.LogManager;
 import org.apache.log4j.Logger;
@@ -207,6 +220,68 @@ public class TestFifoScheduler {
 
     Assert.assertEquals(4 * GB, fs.getRootQueueMetrics().getAvailableMB());
   }
+  
+  @Test
+  public void testHeadroom() throws Exception {
+    
+    Configuration conf = new Configuration();
+    conf.setClass(YarnConfiguration.RM_SCHEDULER, FifoScheduler.class,
+        ResourceScheduler.class);
+    MockRM rm = new MockRM(conf);
+    rm.start();
+    FifoScheduler fs = (FifoScheduler) rm.getResourceScheduler();
+
+    // Add a node
+    RMNode n1 = MockNodes.newNodeInfo(0, MockNodes.newResource(4 * GB), 1);
+    fs.handle(new NodeAddedSchedulerEvent(n1));
+    
+    // Add two applications
+    ApplicationId appId1 = BuilderUtils.newApplicationId(100, 1);
+    ApplicationAttemptId appAttemptId1 = BuilderUtils.newApplicationAttemptId(
+        appId1, 1);
+    SchedulerEvent event1 = new AppAddedSchedulerEvent(appAttemptId1, "queue",
+        "user");
+    fs.handle(event1);
+
+    ApplicationId appId2 = BuilderUtils.newApplicationId(200, 2);
+    ApplicationAttemptId appAttemptId2 = BuilderUtils.newApplicationAttemptId(
+        appId2, 1);
+    SchedulerEvent event2 = new AppAddedSchedulerEvent(appAttemptId2, "queue",
+        "user");
+    fs.handle(event2);
+
+    List<ContainerStatus> emptyStatus = new ArrayList<ContainerStatus>();
+    List<ContainerId> emptyId = new ArrayList<ContainerId>();
+    List<ResourceRequest> emptyAsk = new ArrayList<ResourceRequest>();
+
+    // Set up resource requests
+    
+    // Ask for a 1 GB container for app 1
+    List<ResourceRequest> ask1 = new ArrayList<ResourceRequest>();
+    ask1.add(BuilderUtils.newResourceRequest(BuilderUtils.newPriority(0), "*",
+        BuilderUtils.newResource(GB), 1));
+    fs.allocate(appAttemptId1, ask1, emptyId);
+
+    // Ask for a 2 GB container for app 2
+    List<ResourceRequest> ask2 = new ArrayList<ResourceRequest>();
+    ask2.add(BuilderUtils.newResourceRequest(BuilderUtils.newPriority(0), "*",
+        BuilderUtils.newResource(2 * GB), 1));
+    fs.allocate(appAttemptId2, ask2, emptyId);
+    
+    // Trigger container assignment
+    fs.handle(new NodeUpdateSchedulerEvent(n1, emptyStatus, emptyStatus));
+    
+    // Get the allocation for the applications and verify headroom
+    Allocation allocation1 = fs.allocate(appAttemptId1, emptyAsk, emptyId);
+    Assert.assertEquals("Allocation headroom", 1 * GB,
+        allocation1.getResourceLimit().getMemory());
+
+    Allocation allocation2 = fs.allocate(appAttemptId2, emptyAsk, emptyId);
+    Assert.assertEquals("Allocation headroom", 1 * GB,
+        allocation2.getResourceLimit().getMemory());
+
+  }
+  
 
   public static void main(String[] args) throws Exception {
     TestFifoScheduler t = new TestFifoScheduler();