hadoop EnhancedHeadroom 源码
haddop EnhancedHeadroom 代码
文件路径：/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-api/src/main/java/org/apache/hadoop/yarn/api/records/EnhancedHeadroom.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
* <p>
* http://www.apache.org/licenses/LICENSE-2.0
* <p>
* 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.records;
import org.apache.hadoop.yarn.util.Records;
/**
* Enhanced head room in AllocateResponse.
* This provides a channel for RMs to return load information for AMRMProxy
* decision making when rerouting resource requests.
*
* Contains total pending container count and active cores for a cluster.
*/
public abstract class EnhancedHeadroom {
public static EnhancedHeadroom newInstance(int totalPendingCount,
int totalActiveCores) {
EnhancedHeadroom enhancedHeadroom =
Records.newRecord(EnhancedHeadroom.class);
enhancedHeadroom.setTotalPendingCount(totalPendingCount);
enhancedHeadroom.setTotalActiveCores(totalActiveCores);
return enhancedHeadroom;
}
/**
* Set total pending container count.
* @param totalPendingCount the pending container count
*/
public abstract void setTotalPendingCount(int totalPendingCount);
/**
* Get total pending container count.
* @return the pending container count
*/
public abstract int getTotalPendingCount();
/**
* Set total active cores for the cluster.
* @param totalActiveCores the total active cores for the cluster
*/
public abstract void setTotalActiveCores(int totalActiveCores);
/**
* Get total active cores for the cluster.
* @return totalActiveCores the total active cores for the cluster
*/
public abstract int getTotalActiveCores();
@Override
public String toString() {
StringBuilder sb = new StringBuilder();
sb.append("<pendingCount:").append(this.getTotalPendingCount());
sb.append(", activeCores:").append(this.getTotalActiveCores());
sb.append(">");
return sb.toString();
}
}
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