ARN-803. factor out scheduler config validation from the ResourceManager to each scheduler implementation. (tucu)

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1493160 13f79535-47bb-0310-9956-ffa450edef68

hadoop-yarn-project/CHANGES.txt

@@ -343,6 +343,9 @@ Release 2.1.0-beta - UNRELEASED
     YARN-782. vcores-pcores ratio functions differently from vmem-pmem ratio in 
     misleading way. (sandyr via tucu)
 
+    YARN-803. factor out scheduler config validation from the ResourceManager 
+    to each scheduler implementation. (tucu)
+
   OPTIMIZATIONS
 
     YARN-512. Log aggregation root directory check is more expensive than it

hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/ResourceManager.java

@@ -350,42 +350,6 @@ public class ResourceManager extends CompositeService implements Recoverable {
           + ", " + YarnConfiguration.RM_AM_MAX_ATTEMPTS
           + "=" + globalMaxAppAttempts + ", it should be a positive integer.");
     }
-
-    // validate scheduler memory allocation setting
-    int minMem = conf.getInt(
-        YarnConfiguration.RM_SCHEDULER_MINIMUM_ALLOCATION_MB,
-        YarnConfiguration.DEFAULT_RM_SCHEDULER_MINIMUM_ALLOCATION_MB);
-    int maxMem = conf.getInt(
-        YarnConfiguration.RM_SCHEDULER_MAXIMUM_ALLOCATION_MB,
-        YarnConfiguration.DEFAULT_RM_SCHEDULER_MAXIMUM_ALLOCATION_MB);
-
-    if (minMem <= 0 || minMem > maxMem) {
-      throw new YarnRuntimeException("Invalid resource scheduler memory"
-          + " allocation configuration"
-          + ", " + YarnConfiguration.RM_SCHEDULER_MINIMUM_ALLOCATION_MB
-          + "=" + minMem
-          + ", " + YarnConfiguration.RM_SCHEDULER_MAXIMUM_ALLOCATION_MB
-          + "=" + maxMem + ", min and max should be greater than 0"
-          + ", max should be no smaller than min.");
-    }
-
-    // validate scheduler vcores allocation setting
-    int minVcores = conf.getInt(
-        YarnConfiguration.RM_SCHEDULER_MINIMUM_ALLOCATION_VCORES,
-        YarnConfiguration.DEFAULT_RM_SCHEDULER_MINIMUM_ALLOCATION_VCORES);
-    int maxVcores = conf.getInt(
-        YarnConfiguration.RM_SCHEDULER_MAXIMUM_ALLOCATION_VCORES,
-        YarnConfiguration.DEFAULT_RM_SCHEDULER_MAXIMUM_ALLOCATION_VCORES);
-
-    if (minVcores <= 0 || minVcores > maxVcores) {
-      throw new YarnRuntimeException("Invalid resource scheduler vcores"
-          + " allocation configuration"
-          + ", " + YarnConfiguration.RM_SCHEDULER_MINIMUM_ALLOCATION_VCORES
-          + "=" + minVcores
-          + ", " + YarnConfiguration.RM_SCHEDULER_MAXIMUM_ALLOCATION_VCORES
-          + "=" + maxVcores + ", min and max should be greater than 0"
-          + ", max should be no smaller than min.");
-    }
   }
 
   @Private

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

@@ -45,6 +45,8 @@ import org.apache.hadoop.yarn.api.records.QueueInfo;
 import org.apache.hadoop.yarn.api.records.QueueUserACLInfo;
 import org.apache.hadoop.yarn.api.records.Resource;
 import org.apache.hadoop.yarn.api.records.ResourceRequest;
+import org.apache.hadoop.yarn.conf.YarnConfiguration;
+import org.apache.hadoop.yarn.exceptions.YarnRuntimeException;
 import org.apache.hadoop.yarn.factory.providers.RecordFactoryProvider;
 import org.apache.hadoop.yarn.server.resourcemanager.RMAuditLogger;
 import org.apache.hadoop.yarn.server.resourcemanager.RMAuditLogger.AuditConstants;
@@ -116,6 +118,44 @@ implements ResourceScheduler, CapacitySchedulerContext, Configurable {
   public void setConf(Configuration conf) {
       yarnConf = conf;
   }
+  
+  private void validateConf(Configuration conf) {
+    // validate scheduler memory allocation setting
+    int minMem = conf.getInt(
+      YarnConfiguration.RM_SCHEDULER_MINIMUM_ALLOCATION_MB,
+      YarnConfiguration.DEFAULT_RM_SCHEDULER_MINIMUM_ALLOCATION_MB);
+    int maxMem = conf.getInt(
+      YarnConfiguration.RM_SCHEDULER_MAXIMUM_ALLOCATION_MB,
+      YarnConfiguration.DEFAULT_RM_SCHEDULER_MAXIMUM_ALLOCATION_MB);
+
+    if (minMem <= 0 || minMem > maxMem) {
+      throw new YarnRuntimeException("Invalid resource scheduler memory"
+        + " allocation configuration"
+        + ", " + YarnConfiguration.RM_SCHEDULER_MINIMUM_ALLOCATION_MB
+        + "=" + minMem
+        + ", " + YarnConfiguration.RM_SCHEDULER_MAXIMUM_ALLOCATION_MB
+        + "=" + maxMem + ", min and max should be greater than 0"
+        + ", max should be no smaller than min.");
+    }
+
+    // validate scheduler vcores allocation setting
+    int minVcores = conf.getInt(
+      YarnConfiguration.RM_SCHEDULER_MINIMUM_ALLOCATION_VCORES,
+      YarnConfiguration.DEFAULT_RM_SCHEDULER_MINIMUM_ALLOCATION_VCORES);
+    int maxVcores = conf.getInt(
+      YarnConfiguration.RM_SCHEDULER_MAXIMUM_ALLOCATION_VCORES,
+      YarnConfiguration.DEFAULT_RM_SCHEDULER_MAXIMUM_ALLOCATION_VCORES);
+
+    if (minVcores <= 0 || minVcores > maxVcores) {
+      throw new YarnRuntimeException("Invalid resource scheduler vcores"
+        + " allocation configuration"
+        + ", " + YarnConfiguration.RM_SCHEDULER_MINIMUM_ALLOCATION_VCORES
+        + "=" + minVcores
+        + ", " + YarnConfiguration.RM_SCHEDULER_MAXIMUM_ALLOCATION_VCORES
+        + "=" + maxVcores + ", min and max should be greater than 0"
+        + ", max should be no smaller than min.");
+    }
+  }
 
   @Override
   public Configuration getConf() {
@@ -211,7 +251,7 @@ implements ResourceScheduler, CapacitySchedulerContext, Configurable {
       reinitialize(Configuration conf, RMContext rmContext) throws IOException {
     if (!initialized) {
       this.conf = new CapacitySchedulerConfiguration(conf);
-      
+      validateConf(this.conf);
       this.minimumAllocation = this.conf.getMinimumAllocation();
       this.maximumAllocation = this.conf.getMaximumAllocation();
       this.calculator = this.conf.getResourceCalculator();
@@ -229,6 +269,7 @@ implements ResourceScheduler, CapacitySchedulerContext, Configurable {
 
       CapacitySchedulerConfiguration oldConf = this.conf; 
       this.conf = new CapacitySchedulerConfiguration(conf);
+      validateConf(this.conf);
       try {
         LOG.info("Re-initializing queues...");
         reinitializeQueues(this.conf);

hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/scheduler/fair/FairScheduler.java

@@ -35,10 +35,12 @@ import org.apache.commons.logging.Log;
 import org.apache.commons.logging.LogFactory;
 import org.apache.hadoop.classification.InterfaceAudience.LimitedPrivate;
 import org.apache.hadoop.classification.InterfaceStability.Unstable;
+import org.apache.hadoop.conf.Configurable;
 import org.apache.hadoop.conf.Configuration;
 import org.apache.hadoop.security.UserGroupInformation;
 import org.apache.hadoop.yarn.Clock;
 import org.apache.hadoop.yarn.SystemClock;
+import org.apache.hadoop.yarn.exceptions.YarnRuntimeException;
 import org.apache.hadoop.yarn.api.records.ApplicationAttemptId;
 import org.apache.hadoop.yarn.api.records.Container;
 import org.apache.hadoop.yarn.api.records.ContainerId;
@@ -109,7 +111,6 @@ import org.apache.hadoop.yarn.server.resourcemanager.security.RMContainerTokenSe
 @Unstable
 @SuppressWarnings("unchecked")
 public class FairScheduler implements ResourceScheduler {
-
   private boolean initialized;
   private FairSchedulerConfiguration conf;
   private RMContext rmContext;
@@ -185,6 +186,44 @@ public class FairScheduler implements ResourceScheduler {
     queueMgr = new QueueManager(this);
   }
 
+  private void validateConf(Configuration conf) {
+    // validate scheduler memory allocation setting
+    int minMem = conf.getInt(
+      YarnConfiguration.RM_SCHEDULER_MINIMUM_ALLOCATION_MB,
+      YarnConfiguration.DEFAULT_RM_SCHEDULER_MINIMUM_ALLOCATION_MB);
+    int maxMem = conf.getInt(
+      YarnConfiguration.RM_SCHEDULER_MAXIMUM_ALLOCATION_MB,
+      YarnConfiguration.DEFAULT_RM_SCHEDULER_MAXIMUM_ALLOCATION_MB);
+
+    if (minMem < 0 || minMem > maxMem) {
+      throw new YarnRuntimeException("Invalid resource scheduler memory"
+        + " allocation configuration"
+        + ", " + YarnConfiguration.RM_SCHEDULER_MINIMUM_ALLOCATION_MB
+        + "=" + minMem
+        + ", " + YarnConfiguration.RM_SCHEDULER_MAXIMUM_ALLOCATION_MB
+        + "=" + maxMem + ", min should equal greater than 0"
+        + ", max should be no smaller than min.");
+    }
+
+    // validate scheduler vcores allocation setting
+    int minVcores = conf.getInt(
+      YarnConfiguration.RM_SCHEDULER_MINIMUM_ALLOCATION_VCORES,
+      YarnConfiguration.DEFAULT_RM_SCHEDULER_MINIMUM_ALLOCATION_VCORES);
+    int maxVcores = conf.getInt(
+      YarnConfiguration.RM_SCHEDULER_MAXIMUM_ALLOCATION_VCORES,
+      YarnConfiguration.DEFAULT_RM_SCHEDULER_MAXIMUM_ALLOCATION_VCORES);
+
+    if (minVcores < 0 || minVcores > maxVcores) {
+      throw new YarnRuntimeException("Invalid resource scheduler vcores"
+        + " allocation configuration"
+        + ", " + YarnConfiguration.RM_SCHEDULER_MINIMUM_ALLOCATION_VCORES
+        + "=" + minVcores
+        + ", " + YarnConfiguration.RM_SCHEDULER_MAXIMUM_ALLOCATION_VCORES
+        + "=" + maxVcores + ", min should equal greater than 0"
+        + ", max should be no smaller than min.");
+    }
+  }
+
   public FairSchedulerConfiguration getConf() {
     return conf;
   }
@@ -986,6 +1025,7 @@ public class FairScheduler implements ResourceScheduler {
   public synchronized void reinitialize(Configuration conf, RMContext rmContext)
       throws IOException {
     this.conf = new FairSchedulerConfiguration(conf);
+    validateConf(this.conf);
     minimumAllocation = this.conf.getMinimumAllocation();
     maximumAllocation = this.conf.getMaximumAllocation();
     userAsDefaultQueue = this.conf.getUserAsDefaultQueue();

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

@@ -37,6 +37,7 @@ import org.apache.hadoop.conf.Configuration;
 import org.apache.hadoop.security.UserGroupInformation;
 import org.apache.hadoop.security.authorize.AccessControlList;
 import org.apache.hadoop.yarn.Lock;
+import org.apache.hadoop.yarn.exceptions.YarnRuntimeException;
 import org.apache.hadoop.yarn.api.records.ApplicationAttemptId;
 import org.apache.hadoop.yarn.api.records.Container;
 import org.apache.hadoop.yarn.api.records.ContainerId;
@@ -175,6 +176,26 @@ public class FifoScheduler implements ResourceScheduler, Configurable {
     this.conf = conf;
   }
   
+  private void validateConf(Configuration conf) {
+    // validate scheduler memory allocation setting
+    int minMem = conf.getInt(
+      YarnConfiguration.RM_SCHEDULER_MINIMUM_ALLOCATION_MB,
+      YarnConfiguration.DEFAULT_RM_SCHEDULER_MINIMUM_ALLOCATION_MB);
+    int maxMem = conf.getInt(
+      YarnConfiguration.RM_SCHEDULER_MAXIMUM_ALLOCATION_MB,
+      YarnConfiguration.DEFAULT_RM_SCHEDULER_MAXIMUM_ALLOCATION_MB);
+
+    if (minMem <= 0 || minMem > maxMem) {
+      throw new YarnRuntimeException("Invalid resource scheduler memory"
+        + " allocation configuration"
+        + ", " + YarnConfiguration.RM_SCHEDULER_MINIMUM_ALLOCATION_MB
+        + "=" + minMem
+        + ", " + YarnConfiguration.RM_SCHEDULER_MAXIMUM_ALLOCATION_MB
+        + "=" + maxMem + ", min and max should be greater than 0"
+        + ", max should be no smaller than min.");
+    }
+  }
+  
   @Override
   public synchronized Configuration getConf() {
     return conf;
@@ -201,6 +222,7 @@ public class FifoScheduler implements ResourceScheduler, Configurable {
   {
     setConf(conf);
     if (!this.initialized) {
+      validateConf(conf);
       this.rmContext = rmContext;
       this.minimumAllocation = 
         Resources.createResource(conf.getInt(

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

@@ -25,7 +25,9 @@ import junit.framework.Assert;
 
 import org.apache.commons.logging.Log;
 import org.apache.commons.logging.LogFactory;
+import org.apache.hadoop.conf.Configurable;
 import org.apache.hadoop.conf.Configuration;
+import org.apache.hadoop.yarn.exceptions.YarnRuntimeException;
 import org.apache.hadoop.yarn.api.protocolrecords.AllocateResponse;
 import org.apache.hadoop.yarn.api.records.ApplicationAttemptId;
 import org.apache.hadoop.yarn.api.records.ApplicationId;
@@ -41,6 +43,7 @@ import org.apache.hadoop.yarn.server.resourcemanager.rmnode.RMNode;
 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.CapacityScheduler;
 import org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.CapacitySchedulerConfiguration;
 import org.apache.hadoop.yarn.server.resourcemanager.scheduler.event.AppAddedSchedulerEvent;
 import org.apache.hadoop.yarn.server.resourcemanager.scheduler.event.NodeAddedSchedulerEvent;
@@ -55,6 +58,9 @@ import org.apache.log4j.Logger;
 import org.junit.BeforeClass;
 import org.junit.Test;
 
+import static org.junit.Assert.assertTrue;
+import static org.junit.Assert.fail;
+
 public class TestFifoScheduler {
   private static final Log LOG = LogFactory.getLog(TestFifoScheduler.class);
   
@@ -67,7 +73,25 @@ public class TestFifoScheduler {
     conf.setClass(YarnConfiguration.RM_SCHEDULER, 
         FifoScheduler.class, ResourceScheduler.class);
   }
-  
+
+  @Test (timeout = 30000)
+  public void testConfValidation() throws Exception {
+    ResourceScheduler scheduler = new FifoScheduler();
+    Configuration conf = new YarnConfiguration();
+    conf.setInt(YarnConfiguration.RM_SCHEDULER_MINIMUM_ALLOCATION_MB, 2048);
+    conf.setInt(YarnConfiguration.RM_SCHEDULER_MAXIMUM_ALLOCATION_MB, 1024);
+    try {
+      scheduler.reinitialize(conf, null);
+      fail("Exception is expected because the min memory allocation is" +
+        " larger than the max memory allocation.");
+    } catch (YarnRuntimeException e) {
+      // Exception is expected.
+      assertTrue("The thrown exception is not the expected one.",
+        e.getMessage().startsWith(
+          "Invalid resource scheduler memory"));
+    }
+  }
+
   @Test
   public void test() throws Exception {
     Logger rootLogger = LogManager.getRootLogger();

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

@@ -201,34 +201,6 @@ public class TestResourceManager {
       if (!e.getMessage().startsWith(
               "Invalid global max attempts configuration")) throw e;
     }
-
-    conf = new YarnConfiguration();
-    conf.setInt(YarnConfiguration.RM_SCHEDULER_MINIMUM_ALLOCATION_MB, 2048);
-    conf.setInt(YarnConfiguration.RM_SCHEDULER_MAXIMUM_ALLOCATION_MB, 1024);
-    resourceManager = new ResourceManager();
-    try {
-      resourceManager.init(conf);
-      fail("Exception is expected because the min memory allocation is" +
-          " larger than the max memory allocation.");
-    } catch (YarnRuntimeException e) {
-      // Exception is expected.
-      if (!e.getMessage().startsWith(
-        "Invalid resource scheduler memory")) throw e;
-    }
-
-    conf = new YarnConfiguration();
-    conf.setInt(YarnConfiguration.RM_SCHEDULER_MINIMUM_ALLOCATION_VCORES, 2);
-    conf.setInt(YarnConfiguration.RM_SCHEDULER_MAXIMUM_ALLOCATION_VCORES, 1);
-    resourceManager = new ResourceManager();
-    try {
-      resourceManager.init(conf);
-      fail("Exception is expected because the min vcores allocation is" +
-          " larger than the max vcores allocation.");
-    } catch (YarnRuntimeException e) {
-      // Exception is expected.
-      if (!e.getMessage().startsWith(
-        "Invalid resource scheduler vcores")) throw e;
-    }
   }
 
 }

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

@@ -20,6 +20,7 @@ package org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity;
 
 import static org.junit.Assert.assertEquals;
 import static org.junit.Assert.assertTrue;
+import static org.junit.Assert.fail;
 import static org.mockito.Mockito.when;
 
 import java.io.IOException;
@@ -30,7 +31,10 @@ import junit.framework.Assert;
 
 import org.apache.commons.logging.Log;
 import org.apache.commons.logging.LogFactory;
+import org.apache.hadoop.conf.Configurable;
+import org.apache.hadoop.conf.Configuration;
 import org.apache.hadoop.net.NetworkTopology;
+import org.apache.hadoop.yarn.exceptions.YarnRuntimeException;
 import org.apache.hadoop.yarn.api.records.ApplicationId;
 import org.apache.hadoop.yarn.api.records.Priority;
 import org.apache.hadoop.yarn.api.records.QueueInfo;
@@ -98,7 +102,40 @@ public class TestCapacityScheduler {
   public void tearDown() throws Exception {
     resourceManager.stop();
   }
-  
+
+
+  @Test (timeout = 30000)
+  public void testConfValidation() throws Exception {
+    ResourceScheduler scheduler = new CapacityScheduler();
+    Configuration conf = new YarnConfiguration();
+    conf.setInt(YarnConfiguration.RM_SCHEDULER_MINIMUM_ALLOCATION_MB, 2048);
+    conf.setInt(YarnConfiguration.RM_SCHEDULER_MAXIMUM_ALLOCATION_MB, 1024);
+    try {
+      scheduler.reinitialize(conf, null);
+      fail("Exception is expected because the min memory allocation is" +
+        " larger than the max memory allocation.");
+    } catch (YarnRuntimeException e) {
+      // Exception is expected.
+      assertTrue("The thrown exception is not the expected one.",
+        e.getMessage().startsWith(
+          "Invalid resource scheduler memory"));
+    }
+
+    conf = new YarnConfiguration();
+    conf.setInt(YarnConfiguration.RM_SCHEDULER_MINIMUM_ALLOCATION_VCORES, 2);
+    conf.setInt(YarnConfiguration.RM_SCHEDULER_MAXIMUM_ALLOCATION_VCORES, 1);
+    try {
+      scheduler.reinitialize(conf, null);
+      fail("Exception is expected because the min vcores allocation is" +
+        " larger than the max vcores allocation.");
+    } catch (YarnRuntimeException e) {
+      // Exception is expected.
+      assertTrue("The thrown exception is not the expected one.",
+        e.getMessage().startsWith(
+          "Invalid resource scheduler vcores"));
+    }
+  }
+
   private org.apache.hadoop.yarn.server.resourcemanager.NodeManager
       registerNode(String hostName, int containerManagerPort, int httpPort,
           String rackName, Resource capability)

hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/test/java/org/apache/hadoop/yarn/server/resourcemanager/scheduler/fair/TestFairScheduler.java

@@ -22,6 +22,7 @@ import static org.junit.Assert.assertEquals;
 import static org.junit.Assert.assertNotNull;
 import static org.junit.Assert.assertNull;
 import static org.junit.Assert.assertTrue;
+import static org.junit.Assert.fail;
 
 import java.io.File;
 import java.io.FileWriter;
@@ -38,11 +39,13 @@ import javax.xml.parsers.ParserConfigurationException;
 
 import junit.framework.Assert;
 
+import org.apache.hadoop.conf.Configurable;
 import org.apache.hadoop.conf.Configuration;
 import org.apache.hadoop.metrics2.lib.DefaultMetricsSystem;
 import org.apache.hadoop.security.authorize.AccessControlList;
 import org.apache.hadoop.yarn.Clock;
 import org.apache.hadoop.yarn.MockApps;
+import org.apache.hadoop.yarn.exceptions.YarnRuntimeException;
 import org.apache.hadoop.yarn.api.records.ApplicationAttemptId;
 import org.apache.hadoop.yarn.api.records.ApplicationId;
 import org.apache.hadoop.yarn.api.records.ApplicationSubmissionContext;
@@ -137,6 +140,39 @@ public class TestFairScheduler {
     DefaultMetricsSystem.shutdown();
   }
 
+
+  @Test (timeout = 30000)
+  public void testConfValidation() throws Exception {
+    ResourceScheduler scheduler = new FairScheduler();
+    Configuration conf = new YarnConfiguration();
+    conf.setInt(YarnConfiguration.RM_SCHEDULER_MINIMUM_ALLOCATION_MB, 2048);
+    conf.setInt(YarnConfiguration.RM_SCHEDULER_MAXIMUM_ALLOCATION_MB, 1024);
+    try {
+      scheduler.reinitialize(conf, null);
+      fail("Exception is expected because the min memory allocation is" +
+        " larger than the max memory allocation.");
+    } catch (YarnRuntimeException e) {
+      // Exception is expected.
+      assertTrue("The thrown exception is not the expected one.",
+        e.getMessage().startsWith(
+          "Invalid resource scheduler memory"));
+    }
+
+    conf = new YarnConfiguration();
+    conf.setInt(YarnConfiguration.RM_SCHEDULER_MINIMUM_ALLOCATION_VCORES, 2);
+    conf.setInt(YarnConfiguration.RM_SCHEDULER_MAXIMUM_ALLOCATION_VCORES, 1);
+    try {
+      scheduler.reinitialize(conf, null);
+      fail("Exception is expected because the min vcores allocation is" +
+        " larger than the max vcores allocation.");
+    } catch (YarnRuntimeException e) {
+      // Exception is expected.
+      assertTrue("The thrown exception is not the expected one.",
+        e.getMessage().startsWith(
+          "Invalid resource scheduler vcores"));
+    }
+  }
+
   private Configuration createConfiguration() {
     Configuration conf = new YarnConfiguration();
     conf.setClass(YarnConfiguration.RM_SCHEDULER, FairScheduler.class,