hadoop ConfigurationMutationACLPolicyFactory 源码
haddop ConfigurationMutationACLPolicyFactory 代码
文件路径：/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/scheduler/ConfigurationMutationACLPolicyFactory.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.resourcemanager.scheduler;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.util.ReflectionUtils;
import org.apache.hadoop.yarn.conf.YarnConfiguration;
/**
* Factory class for creating instances of
* {@link ConfigurationMutationACLPolicy}.
*/
public final class ConfigurationMutationACLPolicyFactory {
private static final Logger LOG = LoggerFactory.getLogger(
ConfigurationMutationACLPolicyFactory.class);
private ConfigurationMutationACLPolicyFactory() {
// Unused.
}
public static ConfigurationMutationACLPolicy getPolicy(Configuration conf) {
Class<? extends ConfigurationMutationACLPolicy> policyClass =
conf.getClass(YarnConfiguration.RM_SCHEDULER_MUTATION_ACL_POLICY_CLASS,
DefaultConfigurationMutationACLPolicy.class,
ConfigurationMutationACLPolicy.class);
LOG.info("Using ConfigurationMutationACLPolicy implementation - " +
policyClass);
return ReflectionUtils.newInstance(policyClass, conf);
}
}
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