hadoop RMStateStoreFactory 源码
haddop RMStateStoreFactory 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/recovery/RMStateStoreFactory.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.recovery;
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;
public class RMStateStoreFactory {
private static final Logger LOG =
LoggerFactory.getLogger(RMStateStoreFactory.class);
public static RMStateStore getStore(Configuration conf) {
Class<? extends RMStateStore> storeClass =
conf.getClass(YarnConfiguration.RM_STORE,
MemoryRMStateStore.class, RMStateStore.class);
LOG.info("Using RMStateStore implementation - " + storeClass);
return ReflectionUtils.newInstance(storeClass, conf);
}
}
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