hadoop ContainerLogAggregationPolicy 源码
haddop ContainerLogAggregationPolicy 代码
文件路径：/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-api/src/main/java/org/apache/hadoop/yarn/server/api/ContainerLogAggregationPolicy.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.api;
import org.apache.hadoop.classification.InterfaceAudience.Public;
import org.apache.hadoop.classification.InterfaceStability.Unstable;
/**
* This API is used by NodeManager to decide if a given container's logs
* should be aggregated at run time.
*/
@Public
@Unstable
public interface ContainerLogAggregationPolicy {
/**
* <p>
* The method used by the NodeManager log aggregation service
* to initial the policy object with parameters specified by the application
* or the cluster-wide setting.
* </p>
*
* @param parameters parameters with scheme defined by the policy class.
*/
void parseParameters(String parameters);
/**
* <p>
* The method used by the NodeManager log aggregation service
* to ask the policy object if a given container's logs should be aggregated.
* </p>
*
* @param logContext ContainerLogContext
* @return Whether or not the container's logs should be aggregated.
*/
boolean shouldDoLogAggregation(ContainerLogContext logContext);
}
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