hadoop YarnConfigurationStoreFactory 源码
haddop YarnConfigurationStoreFactory 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/capacity/conf/YarnConfigurationStoreFactory.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.capacity.conf;
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 YarnConfigurationStore}.
*/
public final class YarnConfigurationStoreFactory {
private static final Logger LOG = LoggerFactory.getLogger(
YarnConfigurationStoreFactory.class);
private YarnConfigurationStoreFactory() {
// Unused.
}
public static YarnConfigurationStore getStore(Configuration conf) {
String store = conf.get(
YarnConfiguration.SCHEDULER_CONFIGURATION_STORE_CLASS,
YarnConfiguration.MEMORY_CONFIGURATION_STORE);
switch (store) {
case YarnConfiguration.MEMORY_CONFIGURATION_STORE:
return new InMemoryConfigurationStore();
case YarnConfiguration.LEVELDB_CONFIGURATION_STORE:
return new LeveldbConfigurationStore();
case YarnConfiguration.ZK_CONFIGURATION_STORE:
return new ZKConfigurationStore();
case YarnConfiguration.FS_CONFIGURATION_STORE:
return new FSSchedulerConfigurationStore();
default:
Class<? extends YarnConfigurationStore> storeClass =
conf.getClass(YarnConfiguration.SCHEDULER_CONFIGURATION_STORE_CLASS,
InMemoryConfigurationStore.class, YarnConfigurationStore.class);
LOG.info("Using YarnConfigurationStore implementation - " + storeClass);
return ReflectionUtils.newInstance(storeClass, conf);
}
}
}
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