hadoop QueueState 源码
haddop QueueState 代码
文件路径：/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/QueueState.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.mapreduce;
import java.util.HashMap;
import java.util.Map;
import org.apache.hadoop.classification.InterfaceAudience;
import org.apache.hadoop.classification.InterfaceStability;
/**
* Enum representing queue state
*/
@InterfaceAudience.Public
@InterfaceStability.Evolving
public enum QueueState {
STOPPED("stopped"), RUNNING("running"), UNDEFINED("undefined");
private final String stateName;
private static Map<String, QueueState> enumMap =
new HashMap<String, QueueState>();
static {
for (QueueState state : QueueState.values()) {
enumMap.put(state.getStateName(), state);
}
}
QueueState(String stateName) {
this.stateName = stateName;
}
/**
* @return the stateName
*/
public String getStateName() {
return stateName;
}
public static QueueState getState(String state) {
QueueState qState = enumMap.get(state);
if (qState == null) {
return UNDEFINED;
}
return qState;
}
@Override
public String toString() {
return stateName;
}
}
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