001/* 002 * Licensed to the Apache Software Foundation (ASF) under one 003 * or more contributor license agreements. See the NOTICE file 004 * distributed with this work for additional information 005 * regarding copyright ownership. The ASF licenses this file 006 * to you under the Apache License, Version 2.0 (the 007 * "License"); you may not use this file except in compliance 008 * with the License. You may obtain a copy of the License at 009 * 010 * http://www.apache.org/licenses/LICENSE-2.0 011 * 012 * Unless required by applicable law or agreed to in writing, 013 * software distributed under the License is distributed on an 014 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY 015 * KIND, either express or implied. See the License for the 016 * specific language governing permissions and limitations 017 * under the License. 018 */ 019package org.apache.reef.runtime.yarn.driver.parameters; 020 021import org.apache.reef.tang.annotations.Name; 022import org.apache.reef.tang.annotations.NamedParameter; 023 024/** 025 * The file system URL. 026 * For Hadoop file system, it is set in fs.defaultFS as default by YARN environment. 027 * For Data Lake, for example, Yarn applications are required to set the complete path by themselves. 028 * Example is adl://reefadl.azuredatalakestore.net. 029 */ 030@NamedParameter(doc = "The File System URL.", default_value = "NULL") 031public final class FileSystemUrl implements Name<String> { 032 033 private FileSystemUrl() { 034 } 035 036 public static final String DEFAULT_VALUE = "NULL"; 037}