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HADOOP-18313: AliyunOSSBlockOutputStream should not mark the temporary file for deletion (#4502)

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HADOOP-18313: AliyunOSSBlockOutputStream should not mark the temporary file for deletion. Contributed by wujinhu.
This commit is contained in:
Jinhu Wu 2022-07-06 14:23:46 +08:00 committed by GitHub
parent a432925f74
commit 3ec4b932c1
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2 changed files with 70 additions and 9 deletions
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31
hadoop-tools/hadoop-aliyun/src/main/java/org/apache/hadoop/fs/aliyun/oss/AliyunOSSUtils.java
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@ -23,6 +23,7 @@
import java.net.URI;
import com.aliyun.oss.common.auth.CredentialsProvider;
import org.apache.hadoop.fs.Path;
import org.apache.hadoop.util.Preconditions;
import org.apache.commons.lang3.StringUtils;
import org.apache.hadoop.conf.Configuration;
@ -39,7 +40,7 @@
final public class AliyunOSSUtils {
private static final Logger LOG =
LoggerFactory.getLogger(AliyunOSSUtils.class);
private static LocalDirAllocator directoryAllocator;
private static volatile LocalDirAllocator directoryAllocator;
private AliyunOSSUtils() {
}
@ -171,21 +172,33 @@ public static boolean objectRepresentsDirectory(final String name,
/**
* Demand create the directory allocator, then create a temporary file.
* @param path prefix for the temporary file
* @param size the size of the file that is going to be written
* @param conf the Configuration object
* @return a unique temporary file
* @throws IOException IO problems
* This does not mark the file for deletion when a process exits.
* {@link LocalDirAllocator#createTmpFileForWrite(
* String, long, Configuration)}.
* @param pathStr prefix for the temporary file
* @param size the size of the file that is going to be written
* @param conf the Configuration object
* @return a unique temporary file
* @throws IOException IO problems
*/
public static File createTmpFileForWrite(String path, long size,
public static File createTmpFileForWrite(String pathStr, long size,
Configuration conf) throws IOException {
if (conf.get(BUFFER_DIR_KEY) == null) {
conf.set(BUFFER_DIR_KEY, conf.get("hadoop.tmp.dir") + "/oss");
}
if (directoryAllocator == null) {
directoryAllocator = new LocalDirAllocator(BUFFER_DIR_KEY);
synchronized (AliyunOSSUtils.class) {
if (directoryAllocator == null) {
directoryAllocator = new LocalDirAllocator(BUFFER_DIR_KEY);
}
}
}
return directoryAllocator.createTmpFileForWrite(path, size, conf);
Path path = directoryAllocator.getLocalPathForWrite(pathStr,
size, conf);
File dir = new File(path.getParent().toUri().getPath());
String prefix = path.getName();
// create a temp file on this directory
return File.createTempFile(prefix, null, dir);
}
/**

48
hadoop-tools/hadoop-aliyun/src/test/java/org/apache/hadoop/fs/aliyun/oss/TestAliyunOSSBlockOutputStream.java
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@ -23,19 +23,27 @@
import org.apache.hadoop.fs.FileSystem;
import org.apache.hadoop.fs.Path;
import org.apache.hadoop.fs.contract.ContractTestUtils;
import org.apache.hadoop.test.GenericTestUtils;
import org.junit.After;
import org.junit.Before;
import org.junit.Rule;
import org.junit.Test;
import org.junit.rules.Timeout;
import java.io.File;
import java.io.IOException;
import java.lang.reflect.Field;
import java.util.ArrayList;
import java.util.LinkedHashSet;
import static org.apache.hadoop.fs.aliyun.oss.Constants.BUFFER_DIR_KEY;
import static org.apache.hadoop.fs.aliyun.oss.Constants.MULTIPART_UPLOAD_PART_SIZE_DEFAULT;
import static org.apache.hadoop.fs.aliyun.oss.Constants.MULTIPART_UPLOAD_PART_SIZE_KEY;
import static org.apache.hadoop.fs.contract.ContractTestUtils.IO_CHUNK_BUFFER_SIZE;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertFalse;
import static org.junit.Assert.assertNotEquals;
import static org.junit.Assert.assertTrue;
/**
* Tests regular and multi-part upload functionality for
@ -201,4 +209,44 @@ private void bufferDirShouldEmpty() throws IOException {
// Temporary file should be deleted
assertEquals(0, files.length);
}
@Test
public void testDirectoryAllocator() throws Throwable {
Configuration conf = fs.getConf();
File tmp = AliyunOSSUtils.createTmpFileForWrite("out-", 1024, conf);
assertTrue("not found: " + tmp, tmp.exists());
tmp.delete();
// tmp should not in DeleteOnExitHook
try {
Class<?> c = Class.forName("java.io.DeleteOnExitHook");
Field field = c.getDeclaredField("files");
field.setAccessible(true);
String name = field.getName();
LinkedHashSet<String> files = (LinkedHashSet<String>)field.get(name);
assertTrue("in DeleteOnExitHook", files.isEmpty());
assertFalse("in DeleteOnExitHook",
(new ArrayList<>(files)).contains(tmp.getPath()));
} catch (Exception e) {
e.printStackTrace();
}
}
@Test
public void testDirectoryAllocatorRR() throws Throwable {
File dir1 = GenericTestUtils.getRandomizedTestDir();
File dir2 = GenericTestUtils.getRandomizedTestDir();
dir1.mkdirs();
dir2.mkdirs();
Configuration conf = new Configuration();
conf.set(BUFFER_DIR_KEY, dir1 + ", " + dir2);
fs = AliyunOSSTestUtils.createTestFileSystem(conf);
File tmp1 = AliyunOSSUtils.createTmpFileForWrite("out-", 1024, conf);
tmp1.delete();
File tmp2 = AliyunOSSUtils.createTmpFileForWrite("out-", 1024, conf);
tmp2.delete();
assertNotEquals("round robin not working",
tmp1.getParent(), tmp2.getParent());
}
}