本文整理汇总了Java中org.apache.hadoop.mapreduce.util.MRAsyncDiskService.moveAndDeleteAbsolutePath方法的典型用法代码示例。如果您正苦于以下问题：Java MRAsyncDiskService.moveAndDeleteAbsolutePath方法的具体用法？Java MRAsyncDiskService.moveAndDeleteAbsolutePath怎么用？Java MRAsyncDiskService.moveAndDeleteAbsolutePath使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类org.apache.hadoop.mapreduce.util.MRAsyncDiskService的用法示例。
在下文中一共展示了MRAsyncDiskService.moveAndDeleteAbsolutePath方法的2个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的Java代码示例。
示例1: deleteLocalPath
import org.apache.hadoop.mapreduce.util.MRAsyncDiskService; //导入方法依赖的package包/类
/**
* Delete a local path with asyncDiskService if available,
* or otherwise synchronously with local file system.
*/
private static void deleteLocalPath(MRAsyncDiskService asyncDiskService,
LocalFileSystem fs, Path path) throws IOException {
boolean deleted = false;
if (asyncDiskService != null) {
// Try to delete using asyncDiskService
String localPathToDelete =
path.toUri().getPath();
deleted = asyncDiskService.moveAndDeleteAbsolutePath(localPathToDelete);
if (!deleted) {
LOG.warn("Cannot find DistributedCache path " + localPathToDelete
+ " on any of the asyncDiskService volumes!");
}
}
if (!deleted) {
// If no asyncDiskService, we will delete the files synchronously
fs.delete(path, true);
}
LOG.info("Deleted path " + path);
}
示例2: testMRAsyncDiskService
import org.apache.hadoop.mapreduce.util.MRAsyncDiskService; //导入方法依赖的package包/类
/**
* This test creates some directories and then removes them through
* MRAsyncDiskService.
*/
@Test
public void testMRAsyncDiskService() throws Throwable {
FileSystem localFileSystem = FileSystem.getLocal(new Configuration());
String[] vols = new String[]{TEST_ROOT_DIR + "/0",
TEST_ROOT_DIR + "/1"};
MRAsyncDiskService service = new MRAsyncDiskService(
localFileSystem, vols);
String a = "a";
String b = "b";
String c = "b/c";
String d = "d";
File fa = new File(vols[0], a);
File fb = new File(vols[1], b);
File fc = new File(vols[1], c);
File fd = new File(vols[1], d);
// Create the directories
fa.mkdirs();
fb.mkdirs();
fc.mkdirs();
fd.mkdirs();
assertTrue(fa.exists());
assertTrue(fb.exists());
assertTrue(fc.exists());
assertTrue(fd.exists());
// Move and delete them
service.moveAndDeleteRelativePath(vols[0], a);
assertFalse(fa.exists());
service.moveAndDeleteRelativePath(vols[1], b);
assertFalse(fb.exists());
assertFalse(fc.exists());
assertFalse(service.moveAndDeleteRelativePath(vols[1], "not_exists"));
// asyncDiskService is NOT able to delete files outside all volumes.
IOException ee = null;
try {
service.moveAndDeleteAbsolutePath(TEST_ROOT_DIR + "/2");
} catch (IOException e) {
ee = e;
}
assertNotNull("asyncDiskService should not be able to delete files "
+ "outside all volumes", ee);
// asyncDiskService is able to automatically find the file in one
// of the volumes.
assertTrue(service.moveAndDeleteAbsolutePath(vols[1] + Path.SEPARATOR_CHAR + d));
// Make sure everything is cleaned up
makeSureCleanedUp(vols, service);
}