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[GOBBLIN-2135] Cache Gobblin YARN application jars (#4030)
* Implement caching for gobblin yarn app launcher so that jobs do not repeatedly upload jars and files to hdfs
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gobblin-utility/src/main/java/org/apache/gobblin/util/filesystem/HdfsJarUploadUtils.java
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| /* | ||
| * 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. | ||
| */ | ||
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| package org.apache.gobblin.util.filesystem; | ||
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| import java.io.IOException; | ||
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| import org.apache.hadoop.fs.FileStatus; | ||
| import org.apache.hadoop.fs.FileSystem; | ||
| import org.apache.hadoop.fs.Path; | ||
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| import lombok.extern.slf4j.Slf4j; | ||
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| /** | ||
| * Utility class for uploading jar files to HDFS with retries to handle concurrency | ||
| */ | ||
| @Slf4j | ||
| public class HdfsJarUploadUtils { | ||
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| private static final long WAITING_TIME_ON_INCOMPLETE_UPLOAD_MILLIS = 3000; | ||
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| /** | ||
| * Calculate the target filePath of the jar file to be copied on HDFS, | ||
| * given the {@link FileStatus} of a jarFile and the path of directory that contains jar. | ||
| * Snapshot dirs should not be shared, as different jobs may be using different versions of it. | ||
| * @param fs | ||
| * @param jarName | ||
| * @param unsharedJarsDir | ||
| * @param jarCacheDir | ||
| * @return | ||
| * @throws IOException | ||
| */ | ||
| public static Path calculateDestJarFilePath(FileSystem fs, String jarName, Path unsharedJarsDir, Path jarCacheDir) throws IOException { | ||
| Path uploadDir = jarName.contains("SNAPSHOT") ? unsharedJarsDir : jarCacheDir; | ||
| Path destJarFile = new Path(fs.makeQualified(uploadDir), jarName); | ||
| return destJarFile; | ||
| } | ||
| /** | ||
| * Upload a jar file to HDFS with retries to handle already existing jars | ||
| * @param fs | ||
| * @param localJar | ||
| * @param destJarFile | ||
| * @param maxAttempts | ||
| * @return | ||
| * @throws IOException | ||
| */ | ||
| public static boolean uploadJarToHdfs(FileSystem fs, FileStatus localJar, int maxAttempts, Path destJarFile) throws IOException { | ||
| int retryCount = 0; | ||
| while (!fs.exists(destJarFile) || fs.getFileStatus(destJarFile).getLen() != localJar.getLen()) { | ||
| try { | ||
| if (fs.exists(destJarFile) && fs.getFileStatus(destJarFile).getLen() != localJar.getLen()) { | ||
| Thread.sleep(WAITING_TIME_ON_INCOMPLETE_UPLOAD_MILLIS); | ||
| throw new IOException("Waiting for file to complete on uploading ... "); | ||
| } | ||
| boolean deleteSourceFile = false; | ||
| boolean overwriteAnyExistingDestFile = false; // IOException will be thrown if does already exist | ||
| fs.copyFromLocalFile(deleteSourceFile, overwriteAnyExistingDestFile, localJar.getPath(), destJarFile); | ||
| } catch (IOException | InterruptedException e) { | ||
| log.warn("Path:" + destJarFile + " is not copied successfully. Will require retry."); | ||
| retryCount += 1; | ||
| if (retryCount >= maxAttempts) { | ||
| log.error("The jar file:" + destJarFile + "failed in being copied into hdfs", e); | ||
| // If retry reaches upper limit, skip copying this file. | ||
| return false; | ||
| } | ||
| } | ||
| } | ||
| return true; | ||
| } | ||
| } |
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