hadoop ConfigurableFederationPolicy 源码
haddop ConfigurableFederationPolicy 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/ConfigurableFederationPolicy.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;
import org.apache.hadoop.yarn.server.federation.policies.exceptions.FederationPolicyInitializationException;
/**
* This interface provides a general method to reinitialize a policy. The
* semantics are try-n-swap, so in case of an exception is thrown the
* implmentation must ensure the previous state and configuration is preserved.
*/
public interface ConfigurableFederationPolicy {
/**
* This method is invoked to initialize of update the configuration of
* policies. The implementor should provide try-n-swap semantics, and retain
* state if possible.
*
* @param policyContext the new context to provide to implementor.
*
* @throws FederationPolicyInitializationException in case the initialization
* fails.
*/
void reinitialize(FederationPolicyInitializationContext policyContext)
throws FederationPolicyInitializationException;
}
相关信息
相关文章
hadoop AbstractConfigurableFederationPolicy 源码
hadoop FederationPolicyInitializationContext 源码
hadoop FederationPolicyInitializationContextValidator 源码
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