spark HadoopConfigProvider 源码
spark HadoopConfigProvider 代码
文件路径：/common/network-yarn/src/main/java/org/apache/spark/network/yarn/util/HadoopConfigProvider.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.spark.network.yarn.util;
import java.util.Map;
import java.util.NoSuchElementException;
import org.apache.hadoop.conf.Configuration;
import org.apache.spark.network.util.ConfigProvider;
/** Use the Hadoop configuration to obtain config values. */
public class HadoopConfigProvider extends ConfigProvider {
private final Configuration conf;
public HadoopConfigProvider(Configuration conf) {
this.conf = conf;
}
@Override
public String get(String name) {
String value = conf.get(name);
if (value == null) {
throw new NoSuchElementException(name);
}
return value;
}
@Override
public String get(String name, String defaultValue) {
String value = conf.get(name);
return value == null ? defaultValue : value;
}
@Override
public Iterable<Map.Entry<String, String>> getAll() {
return conf;
}
}
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