hadoop ComponentRestartPolicy 源码
haddop ComponentRestartPolicy 代码
文件路径：/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-applications/hadoop-yarn-services/hadoop-yarn-services-core/src/main/java/org/apache/hadoop/yarn/service/component/ComponentRestartPolicy.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.service.component;
import org.apache.hadoop.yarn.api.records.ContainerStatus;
import org.apache.hadoop.yarn.service.component.instance.ComponentInstance;
/**
* Interface for Component Restart policies.
* Which is used to make decisions on termination/restart of components and
* their instances.
*/
public interface ComponentRestartPolicy {
boolean isLongLived();
boolean hasCompleted(Component component);
boolean hasCompletedSuccessfully(Component component);
boolean shouldRelaunchInstance(ComponentInstance componentInstance,
ContainerStatus containerStatus);
boolean isReadyForDownStream(Component component);
boolean allowUpgrades();
boolean shouldTerminate(Component component);
boolean allowContainerRetriesForInstance(ComponentInstance componentInstance);
}
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