hadoop GetClusterNodesRequest 源码
haddop GetClusterNodesRequest 代码
文件路径：/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-api/src/main/java/org/apache/hadoop/yarn/api/protocolrecords/GetClusterNodesRequest.java
/**
* 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.api.protocolrecords;
import java.util.EnumSet;
import org.apache.hadoop.classification.InterfaceAudience.Public;
import org.apache.hadoop.classification.InterfaceStability.Stable;
import org.apache.hadoop.yarn.api.ApplicationClientProtocol;
import org.apache.hadoop.yarn.api.records.NodeState;
import org.apache.hadoop.yarn.util.Records;
/**
* <p>The request from clients to get a report of all nodes
* in the cluster from the <code>ResourceManager</code>.</p>
*
* The request will ask for all nodes in the given {@link NodeState}s.
*
* @see ApplicationClientProtocol#getClusterNodes(GetClusterNodesRequest)
*/
@Public
@Stable
public abstract class GetClusterNodesRequest {
@Public
@Stable
public static GetClusterNodesRequest newInstance(EnumSet<NodeState> states) {
GetClusterNodesRequest request =
Records.newRecord(GetClusterNodesRequest.class);
request.setNodeStates(states);
return request;
}
@Public
@Stable
public static GetClusterNodesRequest newInstance() {
GetClusterNodesRequest request =
Records.newRecord(GetClusterNodesRequest.class);
return request;
}
/**
* The state to filter the cluster nodes with.
* @return the set of {@link NodeState}
*/
public abstract EnumSet<NodeState> getNodeStates();
/**
* The state to filter the cluster nodes with.
* @param states the set of {@link NodeState}
*/
public abstract void setNodeStates(EnumSet<NodeState> states);
}
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