YARN-3250. Support admin cli interface in for Application Priority. Contributed by Rohith Sharma K S

(cherry picked from commit a9c8ea71aa427ff5f25caec98be15bc880e578a7)

hadoop-yarn-project/CHANGES.txt

@@ -129,6 +129,9 @@ Release 2.8.0 - UNRELEASED
     YARN-4014. Support user cli interface in for Application Priority.
     (Rohith Sharma K S via jianhe)
 
+    YARN-3250. Support admin cli interface in for Application Priority.
+    (Rohith Sharma K S via jianhe)
+
   IMPROVEMENTS
 
     YARN-644. Basic null check is not performed on passed in arguments before

hadoop-yarn-project/hadoop-yarn/hadoop-yarn-api/src/main/java/org/apache/hadoop/yarn/server/api/ResourceManagerAdministrationProtocol.java

@@ -33,6 +33,8 @@ import org.apache.hadoop.yarn.server.api.protocolrecords.CheckForDecommissioning
 import org.apache.hadoop.yarn.server.api.protocolrecords.CheckForDecommissioningNodesResponse;
 import org.apache.hadoop.yarn.server.api.protocolrecords.RefreshAdminAclsRequest;
 import org.apache.hadoop.yarn.server.api.protocolrecords.RefreshAdminAclsResponse;
+import org.apache.hadoop.yarn.server.api.protocolrecords.RefreshClusterMaxPriorityRequest;
+import org.apache.hadoop.yarn.server.api.protocolrecords.RefreshClusterMaxPriorityResponse;
 import org.apache.hadoop.yarn.server.api.protocolrecords.RefreshNodesRequest;
 import org.apache.hadoop.yarn.server.api.protocolrecords.RefreshNodesResponse;
 import org.apache.hadoop.yarn.server.api.protocolrecords.RefreshQueuesRequest;
@@ -128,4 +130,10 @@ public interface ResourceManagerAdministrationProtocol extends GetUserMappingsPr
   public CheckForDecommissioningNodesResponse checkForDecommissioningNodes(
       CheckForDecommissioningNodesRequest checkForDecommissioningNodesRequest)
       throws YarnException, IOException;
+
+  @Private
+  @Idempotent
+  public RefreshClusterMaxPriorityResponse refreshClusterMaxPriority(
+      RefreshClusterMaxPriorityRequest request) throws YarnException,
+      IOException;
 }

hadoop-yarn-project/hadoop-yarn/hadoop-yarn-api/src/main/java/org/apache/hadoop/yarn/server/api/protocolrecords/RefreshClusterMaxPriorityRequest.java

@@ -0,0 +1,35 @@
+/**
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.hadoop.yarn.server.api.protocolrecords;
+
+import org.apache.hadoop.classification.InterfaceAudience.Private;
+import org.apache.hadoop.classification.InterfaceStability.Unstable;
+import org.apache.hadoop.yarn.util.Records;
+
+@Private
+@Unstable
+public abstract class RefreshClusterMaxPriorityRequest {
+  @Private
+  @Unstable
+  public static RefreshClusterMaxPriorityRequest newInstance() {
+    RefreshClusterMaxPriorityRequest request =
+        Records.newRecord(RefreshClusterMaxPriorityRequest.class);
+    return request;
+  }
+}

hadoop-yarn-project/hadoop-yarn/hadoop-yarn-api/src/main/java/org/apache/hadoop/yarn/server/api/protocolrecords/RefreshClusterMaxPriorityResponse.java

@@ -0,0 +1,36 @@
+/**
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.hadoop.yarn.server.api.protocolrecords;
+
+import org.apache.hadoop.classification.InterfaceAudience.Private;
+import org.apache.hadoop.classification.InterfaceStability.Unstable;
+import org.apache.hadoop.yarn.util.Records;
+
+@Private
+@Unstable
+public abstract class RefreshClusterMaxPriorityResponse {
+  @Private
+  @Unstable
+  public static RefreshClusterMaxPriorityResponse newInstance() {
+    RefreshClusterMaxPriorityResponse response =
+        Records.newRecord(RefreshClusterMaxPriorityResponse.class);
+    return response;
+  }
+
+}

hadoop-yarn-project/hadoop-yarn/hadoop-yarn-api/src/main/proto/server/resourcemanager_administration_protocol.proto

@@ -43,4 +43,5 @@ service ResourceManagerAdministrationProtocolService {
   rpc removeFromClusterNodeLabels(RemoveFromClusterNodeLabelsRequestProto) returns (RemoveFromClusterNodeLabelsResponseProto);
   rpc replaceLabelsOnNodes(ReplaceLabelsOnNodeRequestProto) returns (ReplaceLabelsOnNodeResponseProto);
   rpc checkForDecommissioningNodes(CheckForDecommissioningNodesRequestProto) returns (CheckForDecommissioningNodesResponseProto);
+  rpc refreshClusterMaxPriority(RefreshClusterMaxPriorityRequestProto) returns (RefreshClusterMaxPriorityResponseProto);
 }

hadoop-yarn-project/hadoop-yarn/hadoop-yarn-api/src/main/proto/server/yarn_server_resourcemanager_service_protos.proto

@@ -107,6 +107,11 @@ message CheckForDecommissioningNodesResponseProto {
   repeated NodeIdProto decommissioningNodes = 1;
 }
 
+message RefreshClusterMaxPriorityRequestProto {
+}
+message RefreshClusterMaxPriorityResponseProto {
+}
+
 message NodeIdToLabelsNameProto {
   optional NodeIdProto nodeId = 1;
   repeated string nodeLabels = 2;

hadoop-yarn-project/hadoop-yarn/hadoop-yarn-client/src/main/java/org/apache/hadoop/yarn/client/cli/RMAdminCLI.java

@@ -55,6 +55,7 @@ import org.apache.hadoop.yarn.server.api.protocolrecords.AddToClusterNodeLabelsR
 import org.apache.hadoop.yarn.server.api.protocolrecords.CheckForDecommissioningNodesRequest;
 import org.apache.hadoop.yarn.server.api.protocolrecords.CheckForDecommissioningNodesResponse;
 import org.apache.hadoop.yarn.server.api.protocolrecords.RefreshAdminAclsRequest;
+import org.apache.hadoop.yarn.server.api.protocolrecords.RefreshClusterMaxPriorityRequest;
 import org.apache.hadoop.yarn.server.api.protocolrecords.RefreshNodesRequest;
 import org.apache.hadoop.yarn.server.api.protocolrecords.RefreshQueuesRequest;
 import org.apache.hadoop.yarn.server.api.protocolrecords.RefreshServiceAclsRequest;
@@ -132,6 +133,9 @@ public class RMAdminCLI extends HAAdmin {
                   + " (instead of NFS or HDFS), this option will only work"
                   +
                   " when the command run on the machine where RM is running."))
+          .put("-refreshClusterMaxPriority",
+              new UsageInfo("",
+                  "Refresh cluster max priority"))
               .build();
 
   public RMAdminCLI() {
@@ -381,6 +385,15 @@ public class RMAdminCLI extends HAAdmin {
     adminProtocol.refreshServiceAcls(request);
     return 0;
   }
+
+  private int refreshClusterMaxPriority() throws IOException, YarnException {
+    // Refresh cluster max priority
+    ResourceManagerAdministrationProtocol adminProtocol = createAdminProtocol();
+    RefreshClusterMaxPriorityRequest request =
+        recordFactory.newRecordInstance(RefreshClusterMaxPriorityRequest.class);
+    adminProtocol.refreshClusterMaxPriority(request);
+    return 0;
+  }
   
   private int getGroups(String[] usernames) throws IOException {
     // Get groups users belongs to
@@ -676,6 +689,8 @@ public class RMAdminCLI extends HAAdmin {
         exitCode = refreshAdminAcls();
       } else if ("-refreshServiceAcl".equals(cmd)) {
         exitCode = refreshServiceAcls();
+      } else if ("-refreshClusterMaxPriority".equals(cmd)) {
+        exitCode = refreshClusterMaxPriority();
       } else if ("-getGroups".equals(cmd)) {
         String[] usernames = Arrays.copyOfRange(args, i, args.length);
         exitCode = getGroups(usernames);

hadoop-yarn-project/hadoop-yarn/hadoop-yarn-client/src/test/java/org/apache/hadoop/yarn/client/cli/TestRMAdminCLI.java

@@ -53,6 +53,7 @@ import org.apache.hadoop.yarn.server.api.protocolrecords.AddToClusterNodeLabelsR
 import org.apache.hadoop.yarn.server.api.protocolrecords.CheckForDecommissioningNodesRequest;
 import org.apache.hadoop.yarn.server.api.protocolrecords.CheckForDecommissioningNodesResponse;
 import org.apache.hadoop.yarn.server.api.protocolrecords.RefreshAdminAclsRequest;
+import org.apache.hadoop.yarn.server.api.protocolrecords.RefreshClusterMaxPriorityRequest;
 import org.apache.hadoop.yarn.server.api.protocolrecords.RefreshNodesRequest;
 import org.apache.hadoop.yarn.server.api.protocolrecords.RefreshQueuesRequest;
 import org.apache.hadoop.yarn.server.api.protocolrecords.RefreshServiceAclsRequest;
@@ -170,6 +171,14 @@ public class TestRMAdminCLI {
     verify(admin).refreshAdminAcls(any(RefreshAdminAclsRequest.class));
   }
 
+  @Test(timeout = 5000)
+  public void testRefreshClusterMaxPriority() throws Exception {
+    String[] args = { "-refreshClusterMaxPriority" };
+    assertEquals(0, rmAdminCLI.run(args));
+    verify(admin).refreshClusterMaxPriority(
+        any(RefreshClusterMaxPriorityRequest.class));
+  }
+
   @Test(timeout=500)
   public void testRefreshServiceAcl() throws Exception {
     String[] args = { "-refreshServiceAcl" };

hadoop-yarn-project/hadoop-yarn/hadoop-yarn-common/src/main/java/org/apache/hadoop/yarn/server/api/impl/pb/client/ResourceManagerAdministrationProtocolPBClientImpl.java

@@ -34,6 +34,7 @@ import org.apache.hadoop.yarn.proto.YarnServerResourceManagerServiceProtos.Check
 import org.apache.hadoop.yarn.proto.YarnServerResourceManagerServiceProtos.GetGroupsForUserRequestProto;
 import org.apache.hadoop.yarn.proto.YarnServerResourceManagerServiceProtos.GetGroupsForUserResponseProto;
 import org.apache.hadoop.yarn.proto.YarnServerResourceManagerServiceProtos.RefreshAdminAclsRequestProto;
+import org.apache.hadoop.yarn.proto.YarnServerResourceManagerServiceProtos.RefreshClusterMaxPriorityRequestProto;
 import org.apache.hadoop.yarn.proto.YarnServerResourceManagerServiceProtos.RefreshNodesRequestProto;
 import org.apache.hadoop.yarn.proto.YarnServerResourceManagerServiceProtos.RefreshQueuesRequestProto;
 import org.apache.hadoop.yarn.proto.YarnServerResourceManagerServiceProtos.RefreshServiceAclsRequestProto;
@@ -50,6 +51,8 @@ import org.apache.hadoop.yarn.server.api.protocolrecords.CheckForDecommissioning
 import org.apache.hadoop.yarn.server.api.protocolrecords.CheckForDecommissioningNodesResponse;
 import org.apache.hadoop.yarn.server.api.protocolrecords.RefreshAdminAclsRequest;
 import org.apache.hadoop.yarn.server.api.protocolrecords.RefreshAdminAclsResponse;
+import org.apache.hadoop.yarn.server.api.protocolrecords.RefreshClusterMaxPriorityRequest;
+import org.apache.hadoop.yarn.server.api.protocolrecords.RefreshClusterMaxPriorityResponse;
 import org.apache.hadoop.yarn.server.api.protocolrecords.RefreshNodesRequest;
 import org.apache.hadoop.yarn.server.api.protocolrecords.RefreshNodesResponse;
 import org.apache.hadoop.yarn.server.api.protocolrecords.RefreshQueuesRequest;
@@ -72,6 +75,8 @@ import org.apache.hadoop.yarn.server.api.protocolrecords.impl.pb.CheckForDecommi
 import org.apache.hadoop.yarn.server.api.protocolrecords.impl.pb.CheckForDecommissioningNodesResponsePBImpl;
 import org.apache.hadoop.yarn.server.api.protocolrecords.impl.pb.RefreshAdminAclsRequestPBImpl;
 import org.apache.hadoop.yarn.server.api.protocolrecords.impl.pb.RefreshAdminAclsResponsePBImpl;
+import org.apache.hadoop.yarn.server.api.protocolrecords.impl.pb.RefreshClusterMaxPriorityRequestPBImpl;
+import org.apache.hadoop.yarn.server.api.protocolrecords.impl.pb.RefreshClusterMaxPriorityResponsePBImpl;
 import org.apache.hadoop.yarn.server.api.protocolrecords.impl.pb.RefreshNodesRequestPBImpl;
 import org.apache.hadoop.yarn.server.api.protocolrecords.impl.pb.RefreshNodesResponsePBImpl;
 import org.apache.hadoop.yarn.server.api.protocolrecords.impl.pb.RefreshQueuesRequestPBImpl;
@@ -284,4 +289,19 @@ public class ResourceManagerAdministrationProtocolPBClientImpl implements Resour
       return null;
     }
   }
+
+  @Override
+  public RefreshClusterMaxPriorityResponse refreshClusterMaxPriority(
+      RefreshClusterMaxPriorityRequest request) throws YarnException,
+      IOException {
+    RefreshClusterMaxPriorityRequestProto requestProto =
+        ((RefreshClusterMaxPriorityRequestPBImpl) request).getProto();
+    try {
+      return new RefreshClusterMaxPriorityResponsePBImpl(
+          proxy.refreshClusterMaxPriority(null, requestProto));
+    } catch (ServiceException e) {
+      RPCUtil.unwrapAndThrowException(e);
+      return null;
+    }
+  }
 }

hadoop-yarn-project/hadoop-yarn/hadoop-yarn-common/src/main/java/org/apache/hadoop/yarn/server/api/impl/pb/service/ResourceManagerAdministrationProtocolPBServiceImpl.java

@@ -30,6 +30,8 @@ import org.apache.hadoop.yarn.proto.YarnServerResourceManagerServiceProtos.GetGr
 import org.apache.hadoop.yarn.proto.YarnServerResourceManagerServiceProtos.GetGroupsForUserResponseProto;
 import org.apache.hadoop.yarn.proto.YarnServerResourceManagerServiceProtos.RefreshAdminAclsRequestProto;
 import org.apache.hadoop.yarn.proto.YarnServerResourceManagerServiceProtos.RefreshAdminAclsResponseProto;
+import org.apache.hadoop.yarn.proto.YarnServerResourceManagerServiceProtos.RefreshClusterMaxPriorityRequestProto;
+import org.apache.hadoop.yarn.proto.YarnServerResourceManagerServiceProtos.RefreshClusterMaxPriorityResponseProto;
 import org.apache.hadoop.yarn.proto.YarnServerResourceManagerServiceProtos.RefreshNodesRequestProto;
 import org.apache.hadoop.yarn.proto.YarnServerResourceManagerServiceProtos.RefreshNodesResponseProto;
 import org.apache.hadoop.yarn.proto.YarnServerResourceManagerServiceProtos.RefreshQueuesRequestProto;
@@ -52,6 +54,8 @@ import org.apache.hadoop.yarn.server.api.protocolrecords.AddToClusterNodeLabelsR
 import org.apache.hadoop.yarn.server.api.protocolrecords.CheckForDecommissioningNodesRequest;
 import org.apache.hadoop.yarn.server.api.protocolrecords.CheckForDecommissioningNodesResponse;
 import org.apache.hadoop.yarn.server.api.protocolrecords.RefreshAdminAclsResponse;
+import org.apache.hadoop.yarn.server.api.protocolrecords.RefreshClusterMaxPriorityRequest;
+import org.apache.hadoop.yarn.server.api.protocolrecords.RefreshClusterMaxPriorityResponse;
 import org.apache.hadoop.yarn.server.api.protocolrecords.RefreshNodesResponse;
 import org.apache.hadoop.yarn.server.api.protocolrecords.RefreshQueuesResponse;
 import org.apache.hadoop.yarn.server.api.protocolrecords.RefreshServiceAclsResponse;
@@ -66,6 +70,8 @@ import org.apache.hadoop.yarn.server.api.protocolrecords.impl.pb.CheckForDecommi
 import org.apache.hadoop.yarn.server.api.protocolrecords.impl.pb.CheckForDecommissioningNodesResponsePBImpl;
 import org.apache.hadoop.yarn.server.api.protocolrecords.impl.pb.RefreshAdminAclsRequestPBImpl;
 import org.apache.hadoop.yarn.server.api.protocolrecords.impl.pb.RefreshAdminAclsResponsePBImpl;
+import org.apache.hadoop.yarn.server.api.protocolrecords.impl.pb.RefreshClusterMaxPriorityRequestPBImpl;
+import org.apache.hadoop.yarn.server.api.protocolrecords.impl.pb.RefreshClusterMaxPriorityResponsePBImpl;
 import org.apache.hadoop.yarn.server.api.protocolrecords.impl.pb.RefreshNodesRequestPBImpl;
 import org.apache.hadoop.yarn.server.api.protocolrecords.impl.pb.RefreshNodesResponsePBImpl;
 import org.apache.hadoop.yarn.server.api.protocolrecords.impl.pb.RefreshQueuesRequestPBImpl;
@@ -291,4 +297,21 @@ public class ResourceManagerAdministrationProtocolPBServiceImpl implements Resou
       throw new ServiceException(e);
     }
   }
+
+  @Override
+  public RefreshClusterMaxPriorityResponseProto refreshClusterMaxPriority(
+      RpcController arg0, RefreshClusterMaxPriorityRequestProto proto)
+      throws ServiceException {
+    RefreshClusterMaxPriorityRequest request =
+        new RefreshClusterMaxPriorityRequestPBImpl(proto);
+    try {
+      RefreshClusterMaxPriorityResponse response =
+          real.refreshClusterMaxPriority(request);
+      return ((RefreshClusterMaxPriorityResponsePBImpl) response).getProto();
+    } catch (YarnException e) {
+      throw new ServiceException(e);
+    } catch (IOException e) {
+      throw new ServiceException(e);
+    }
+  }
 }

hadoop-yarn-project/hadoop-yarn/hadoop-yarn-common/src/main/java/org/apache/hadoop/yarn/server/api/protocolrecords/impl/pb/RefreshClusterMaxPriorityRequestPBImpl.java

@@ -0,0 +1,74 @@
+/**
+* Licensed to the Apache Software Foundation (ASF) under one
+* or more contributor license agreements.  See the NOTICE file
+* distributed with this work for additional information
+* regarding copyright ownership.  The ASF licenses this file
+* to you under the Apache License, Version 2.0 (the
+* "License"); you may not use this file except in compliance
+* with the License.  You may obtain a copy of the License at
+*
+*     http://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*/
+
+package org.apache.hadoop.yarn.server.api.protocolrecords.impl.pb;
+
+import org.apache.hadoop.classification.InterfaceAudience.Private;
+import org.apache.hadoop.classification.InterfaceStability.Unstable;
+import org.apache.hadoop.yarn.proto.YarnServerResourceManagerServiceProtos.RefreshClusterMaxPriorityRequestProto;
+import org.apache.hadoop.yarn.server.api.protocolrecords.RefreshClusterMaxPriorityRequest;
+
+import com.google.protobuf.TextFormat;
+
+@Private
+@Unstable
+public class RefreshClusterMaxPriorityRequestPBImpl 
+ extends
+    RefreshClusterMaxPriorityRequest {
+
+  RefreshClusterMaxPriorityRequestProto proto =
+      RefreshClusterMaxPriorityRequestProto.getDefaultInstance();
+  RefreshClusterMaxPriorityRequestProto.Builder builder = null;
+  boolean viaProto = false;
+  
+  public RefreshClusterMaxPriorityRequestPBImpl() {
+    builder = RefreshClusterMaxPriorityRequestProto.newBuilder();
+  }
+
+  public RefreshClusterMaxPriorityRequestPBImpl(
+      RefreshClusterMaxPriorityRequestProto proto) {
+    this.proto = proto;
+    viaProto = true;
+  }
+  
+  public RefreshClusterMaxPriorityRequestProto getProto() {
+    proto = viaProto ? proto : builder.build();
+    viaProto = true;
+    return proto;
+  }
+  
+  @Override
+  public int hashCode() {
+    return getProto().hashCode();
+  }
+  
+  @Override
+  public boolean equals(Object other) {
+    if (other == null)
+      return false;
+    if (other.getClass().isAssignableFrom(this.getClass())) {
+      return this.getProto().equals(this.getClass().cast(other).getProto());
+    }
+    return false;
+  }
+  
+  @Override
+  public String toString() {
+    return TextFormat.shortDebugString(getProto());
+  }
+}

hadoop-yarn-project/hadoop-yarn/hadoop-yarn-common/src/main/java/org/apache/hadoop/yarn/server/api/protocolrecords/impl/pb/RefreshClusterMaxPriorityResponsePBImpl.java

@@ -0,0 +1,73 @@
+/**
+* Licensed to the Apache Software Foundation (ASF) under one
+* or more contributor license agreements.  See the NOTICE file
+* distributed with this work for additional information
+* regarding copyright ownership.  The ASF licenses this file
+* to you under the Apache License, Version 2.0 (the
+* "License"); you may not use this file except in compliance
+* with the License.  You may obtain a copy of the License at
+*
+*     http://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*/
+
+package org.apache.hadoop.yarn.server.api.protocolrecords.impl.pb;
+
+import org.apache.hadoop.classification.InterfaceAudience.Private;
+import org.apache.hadoop.classification.InterfaceStability.Unstable;
+import org.apache.hadoop.yarn.proto.YarnServerResourceManagerServiceProtos.RefreshClusterMaxPriorityResponseProto;
+import org.apache.hadoop.yarn.server.api.protocolrecords.RefreshClusterMaxPriorityResponse;
+
+import com.google.protobuf.TextFormat;
+
+@Private
+@Unstable
+public class RefreshClusterMaxPriorityResponsePBImpl extends
+    RefreshClusterMaxPriorityResponse {
+
+  RefreshClusterMaxPriorityResponseProto proto =
+      RefreshClusterMaxPriorityResponseProto.getDefaultInstance();
+  RefreshClusterMaxPriorityResponseProto.Builder builder = null;
+  boolean viaProto = false;
+  
+  public RefreshClusterMaxPriorityResponsePBImpl() {
+    builder = RefreshClusterMaxPriorityResponseProto.newBuilder();
+  }
+
+  public RefreshClusterMaxPriorityResponsePBImpl(
+      RefreshClusterMaxPriorityResponseProto proto) {
+    this.proto = proto;
+    viaProto = true;
+  }
+  
+  public RefreshClusterMaxPriorityResponseProto getProto() {
+    proto = viaProto ? proto : builder.build();
+    viaProto = true;
+    return proto;
+  }
+  
+  @Override
+  public int hashCode() {
+    return getProto().hashCode();
+  }
+  
+  @Override
+  public boolean equals(Object other) {
+    if (other == null)
+      return false;
+    if (other.getClass().isAssignableFrom(this.getClass())) {
+      return this.getProto().equals(this.getClass().cast(other).getProto());
+    }
+    return false;
+  }
+  
+  @Override
+  public String toString() {
+    return TextFormat.shortDebugString(getProto());
+  }
+}

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

@@ -66,6 +66,8 @@ import org.apache.hadoop.yarn.server.api.protocolrecords.CheckForDecommissioning
 import org.apache.hadoop.yarn.server.api.protocolrecords.CheckForDecommissioningNodesResponse;
 import org.apache.hadoop.yarn.server.api.protocolrecords.RefreshAdminAclsRequest;
 import org.apache.hadoop.yarn.server.api.protocolrecords.RefreshAdminAclsResponse;
+import org.apache.hadoop.yarn.server.api.protocolrecords.RefreshClusterMaxPriorityRequest;
+import org.apache.hadoop.yarn.server.api.protocolrecords.RefreshClusterMaxPriorityResponse;
 import org.apache.hadoop.yarn.server.api.protocolrecords.RefreshNodesRequest;
 import org.apache.hadoop.yarn.server.api.protocolrecords.RefreshNodesResponse;
 import org.apache.hadoop.yarn.server.api.protocolrecords.RefreshQueuesRequest;
@@ -613,6 +615,7 @@ public class AdminService extends CompositeService implements
           false)) {
         refreshServiceAcls(RefreshServiceAclsRequest.newInstance());
       }
+      refreshClusterMaxPriority(RefreshClusterMaxPriorityRequest.newInstance());
     } catch (Exception ex) {
       throw new ServiceFailedException(ex.getMessage());
     }
@@ -742,4 +745,29 @@ public class AdminService extends CompositeService implements
     response.setDecommissioningNodes(decommissioningNodes);
     return response;
   }
+
+  @Override
+  public RefreshClusterMaxPriorityResponse refreshClusterMaxPriority(
+      RefreshClusterMaxPriorityRequest request) throws YarnException,
+      IOException {
+    String argName = "refreshClusterMaxPriority";
+    String msg = "refresh cluster max priority";
+    UserGroupInformation user = checkAcls(argName);
+
+    checkRMStatus(user.getShortUserName(), argName, msg);
+    try {
+      Configuration conf =
+          getConfiguration(new Configuration(false),
+              YarnConfiguration.YARN_SITE_CONFIGURATION_FILE);
+
+      rmContext.getScheduler().setClusterMaxPriority(conf);
+
+      RMAuditLogger
+          .logSuccess(user.getShortUserName(), argName, "AdminService");
+      return recordFactory
+          .newRecordInstance(RefreshClusterMaxPriorityResponse.class);
+    } catch (YarnException e) {
+      throw logAndWrapException(e, user.getShortUserName(), argName, msg);
+    }
+  }
 }

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

@@ -99,6 +99,8 @@ public abstract class AbstractYarnScheduler
 
   protected RMContext rmContext;
   
+  private volatile Priority maxClusterLevelAppPriority;
+
   /*
    * All schedulers which are inheriting AbstractYarnScheduler should use
    * concurrent version of 'applications' map.
@@ -131,6 +133,7 @@ public abstract class AbstractYarnScheduler
     configuredMaximumAllocationWaitTime =
         conf.getLong(YarnConfiguration.RM_WORK_PRESERVING_RECOVERY_SCHEDULING_WAIT_MS,
           YarnConfiguration.DEFAULT_RM_WORK_PRESERVING_RECOVERY_SCHEDULING_WAIT_MS);
+    maxClusterLevelAppPriority = getMaxPriorityFromConf(conf);
     createReleaseCache();
     super.serviceInit(conf);
   }
@@ -708,4 +711,26 @@ public abstract class AbstractYarnScheduler
     // Dummy Implementation till Application Priority changes are done in
     // specific scheduler.
   }
+
+  public Priority getMaxClusterLevelAppPriority() {
+    return maxClusterLevelAppPriority;
+  }
+
+  private Priority getMaxPriorityFromConf(Configuration conf) {
+    return Priority.newInstance(conf.getInt(
+        YarnConfiguration.MAX_CLUSTER_LEVEL_APPLICATION_PRIORITY,
+        YarnConfiguration.DEFAULT_CLUSTER_LEVEL_APPLICATION_PRIORITY));
+  }
+
+  @Override
+  public synchronized void setClusterMaxPriority(Configuration conf)
+      throws YarnException {
+    try {
+      maxClusterLevelAppPriority = getMaxPriorityFromConf(conf);
+    } catch (NumberFormatException e) {
+      throw new YarnException(e);
+    }
+    LOG.info("Updated the cluste max priority to maxClusterLevelAppPriority = "
+        + maxClusterLevelAppPriority);
+  }
 }

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

@@ -28,6 +28,7 @@ import org.apache.hadoop.classification.InterfaceAudience.Public;
 import org.apache.hadoop.classification.InterfaceStability.Evolving;
 import org.apache.hadoop.classification.InterfaceStability.Stable;
 import org.apache.hadoop.classification.InterfaceStability.Unstable;
+import org.apache.hadoop.conf.Configuration;
 import org.apache.hadoop.security.UserGroupInformation;
 import org.apache.hadoop.yarn.api.records.ApplicationAttemptId;
 import org.apache.hadoop.yarn.api.records.ApplicationId;
@@ -328,4 +329,12 @@ public interface YarnScheduler extends EventHandler<SchedulerEvent> {
    * @return list of live containers for the given attempt
    */
   List<Container> getTransferredContainers(ApplicationAttemptId appAttemptId);
+
+  /**
+   * Set the cluster max priority
+   * 
+   * @param conf
+   * @throws YarnException
+   */
+  void setClusterMaxPriority(Configuration conf) throws YarnException;
 }

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

@@ -220,7 +220,7 @@ public class CapacityScheduler extends
   private RMNodeLabelsManager labelManager;
   private SchedulerHealth schedulerHealth = new SchedulerHealth();
   long lastNodeUpdateTime;
-  private Priority maxClusterLevelAppPriority;
+
   /**
    * EXPERT
    */
@@ -316,9 +316,6 @@ public class CapacityScheduler extends
     if (scheduleAsynchronously) {
       asyncSchedulerThread = new AsyncScheduleThread(this);
     }
-    maxClusterLevelAppPriority = Priority.newInstance(yarnConf.getInt(
-        YarnConfiguration.MAX_CLUSTER_LEVEL_APPLICATION_PRIORITY,
-        YarnConfiguration.DEFAULT_CLUSTER_LEVEL_APPLICATION_PRIORITY));
 
     LOG.info("Initialized CapacityScheduler with " +
         "calculator=" + getResourceCalculator().getClass() + ", " +
@@ -1859,10 +1856,6 @@ public class CapacityScheduler extends
         .getPriority());
   }
 
-  public Priority getMaxClusterLevelAppPriority() {
-    return maxClusterLevelAppPriority;
-  }
-
   @Override
   public void updateApplicationPriority(Priority newPriority,
       ApplicationId applicationId) throws YarnException {

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

@@ -52,6 +52,7 @@ import org.apache.hadoop.yarn.conf.HAUtil;
 import org.apache.hadoop.yarn.conf.YarnConfiguration;
 import org.apache.hadoop.yarn.exceptions.YarnException;
 import org.apache.hadoop.yarn.server.api.protocolrecords.RefreshAdminAclsRequest;
+import org.apache.hadoop.yarn.server.api.protocolrecords.RefreshClusterMaxPriorityRequest;
 import org.apache.hadoop.yarn.server.api.protocolrecords.RefreshNodesRequest;
 import org.apache.hadoop.yarn.server.api.protocolrecords.RefreshQueuesRequest;
 import org.apache.hadoop.yarn.server.api.protocolrecords.RefreshServiceAclsRequest;
@@ -867,6 +868,39 @@ public class TestRMAdminService {
     rm.close();
   }
 
+  @Test(timeout = 30000)
+  public void testAdminRefreshClusterMaxPriority() throws Exception,
+      YarnException {
+    configuration.set(YarnConfiguration.RM_CONFIGURATION_PROVIDER_CLASS,
+        "org.apache.hadoop.yarn.FileSystemBasedConfigurationProvider");
+
+    uploadDefaultConfiguration();
+    YarnConfiguration yarnConf = new YarnConfiguration();
+    yarnConf.set(YarnConfiguration.MAX_CLUSTER_LEVEL_APPLICATION_PRIORITY, "5");
+    uploadConfiguration(yarnConf, "yarn-site.xml");
+
+    rm = new MockRM(configuration);
+    rm.init(configuration);
+    rm.start();
+
+    CapacityScheduler cs = (CapacityScheduler) rm.getRMContext().getScheduler();
+    Assert.assertEquals(5, cs.getMaxClusterLevelAppPriority().getPriority());
+
+    yarnConf = new YarnConfiguration();
+    yarnConf
+        .set(YarnConfiguration.MAX_CLUSTER_LEVEL_APPLICATION_PRIORITY, "10");
+    uploadConfiguration(yarnConf, "yarn-site.xml");
+
+    try {
+      rm.adminService
+          .refreshClusterMaxPriority(RefreshClusterMaxPriorityRequest
+              .newInstance());
+      Assert.assertEquals(10, cs.getMaxClusterLevelAppPriority().getPriority());
+    } catch (Exception ex) {
+      fail("Could not refresh cluster max priority.");
+    }
+  }
+
   private String writeConfigurationXML(Configuration conf, String confXMLName)
       throws IOException {
     DataOutputStream output = null;