hadoop HashBroadcastPolicyManager 源码
haddop HashBroadcastPolicyManager 代码
文件路径：/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-common/src/main/java/org/apache/hadoop/yarn/server/federation/policies/manager/HashBroadcastPolicyManager.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.server.federation.policies.manager;
import org.apache.hadoop.yarn.server.federation.policies.amrmproxy.BroadcastAMRMProxyPolicy;
import org.apache.hadoop.yarn.server.federation.policies.router.HashBasedRouterPolicy;
/**
* Policy that routes applications via hashing of their queuename, and broadcast
* resource requests. This picks a {@link HashBasedRouterPolicy} for the router
* and a {@link BroadcastAMRMProxyPolicy} for the amrmproxy as they are designed
* to work together.
*/
public class HashBroadcastPolicyManager extends AbstractPolicyManager {
public HashBroadcastPolicyManager() {
// this structurally hard-codes two compatible policies for Router and
// AMRMProxy.
routerFederationPolicy = HashBasedRouterPolicy.class;
amrmProxyFederationPolicy = BroadcastAMRMProxyPolicy.class;
}
}
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