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0001 /* 0002 * Licensed to the Apache Software Foundation (ASF) under one or more 0003 * contributor license agreements. See the NOTICE file distributed with 0004 * this work for additional information regarding copyright ownership. 0005 * The ASF licenses this file to You under the Apache License, Version 2.0 0006 * (the "License"); you may not use this file except in compliance with 0007 * the License. You may obtain a copy of the License at 0008 * 0009 * http://www.apache.org/licenses/LICENSE-2.0 0010 * 0011 * Unless required by applicable law or agreed to in writing, software 0012 * distributed under the License is distributed on an "AS IS" BASIS, 0013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 0014 * See the License for the specific language governing permissions and 0015 * limitations under the License. 0016 */ 0017 0018 package org.apache.spark.network.shuffle; 0019 0020 import org.apache.spark.network.util.TransportConf; 0021 0022 /** 0023 * A manager to create temp block files used when fetching remote data to reduce the memory usage. 0024 * It will clean files when they won't be used any more. 0025 */ 0026 public interface DownloadFileManager { 0027 0028 /** Create a temp block file. */ 0029 DownloadFile createTempFile(TransportConf transportConf); 0030 0031 /** 0032 * Register a temp file to clean up when it won't be used any more. Return whether the 0033 * file is registered successfully. If `false`, the caller should clean up the file by itself. 0034 */ 0035 boolean registerTempFileToClean(DownloadFile file); 0036 }
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