Examples of org.apache.hadoop.fs.FileSystem.undelete()

org.apache.hadoop.fs.FileSystem.undelete()
Undelete a file from trash. By default, return false. @param f the path to undelete @param userName name of the user whose trash will be searched, ornull for current user @return true if undelete is successful else false. @throws IOException

      FileSystem fs = cluster.getFileSystem();
      TestCase.assertNotNull(DFSUtil.convertToDFS(fs));
      
      createFile(fs, new Path("/test/testDelete"));
      TestCase.assertTrue(fs.delete(new Path("/test/testDelete"), false));
      TestCase.assertTrue(fs.undelete(new Path("/test/testDelete"),
          System.getProperty("user.name")));


      fs.mkdirs(new Path("/tmp"));
      TestCase.assertTrue(fs.delete(new Path("/tmp"), false));
      TestCase.assertFalse(fs.undelete(new Path("/tmp"),

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      TestCase.assertTrue(fs.undelete(new Path("/test/testDelete"),
          System.getProperty("user.name")));


      fs.mkdirs(new Path("/tmp"));
      TestCase.assertTrue(fs.delete(new Path("/tmp"), false));
      TestCase.assertFalse(fs.undelete(new Path("/tmp"),
          System.getProperty("user.name")));


      // temp directory automatically skips trash.
      createFile(fs, new Path("/tmp/testDelete"));
      TestCase.assertTrue(fs.delete(new Path("/tmp/testDelete"), false));

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          System.getProperty("user.name")));


      // temp directory automatically skips trash.
      createFile(fs, new Path("/tmp/testDelete"));
      TestCase.assertTrue(fs.delete(new Path("/tmp/testDelete"), false));
      TestCase.assertFalse(fs.undelete(new Path("/tmp/testDelete"),
          System.getProperty("user.name")));


      fs.getConf().set("fs.trash.tmp.path.pattern", "{/tmp,/dir/,/dir1/*/dir3//}");
      createFile(fs, new Path("/dir1/dir2/dir3/dir5/file1"));
      TestCase.assertTrue(fs.delete(new Path("/dir1/dir2/dir3/dir5/file1"),

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      fs.getConf().set("fs.trash.tmp.path.pattern", "{/tmp,/dir/,/dir1/*/dir3//}");
      createFile(fs, new Path("/dir1/dir2/dir3/dir5/file1"));
      TestCase.assertTrue(fs.delete(new Path("/dir1/dir2/dir3/dir5/file1"),
          false));
      TestCase.assertFalse(fs.undelete(new Path("/dir1/dir2/dir3/dir5/file1"),
          System.getProperty("user.name")));
      fs.mkdirs(new Path("/dir1/dir5/dir3/"));
      TestCase.assertTrue(fs.delete(new Path("/dir1/dir5/dir3/"),
          true));
      TestCase.assertFalse(fs.undelete(new Path("/dir1/dir5/dir3/"),

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      TestCase.assertFalse(fs.undelete(new Path("/dir1/dir2/dir3/dir5/file1"),
          System.getProperty("user.name")));
      fs.mkdirs(new Path("/dir1/dir5/dir3/"));
      TestCase.assertTrue(fs.delete(new Path("/dir1/dir5/dir3/"),
          true));
      TestCase.assertFalse(fs.undelete(new Path("/dir1/dir5/dir3/"),
          System.getProperty("user.name")));
      


      createFile(fs, new Path("/tmp/testDelete"));
      TestCase.assertTrue(fs.delete(new Path("/tmp/testDelete"), false));

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          System.getProperty("user.name")));
      


      createFile(fs, new Path("/tmp/testDelete"));
      TestCase.assertTrue(fs.delete(new Path("/tmp/testDelete"), false));
      TestCase.assertFalse(fs.undelete(new Path("/tmp/testDelete"),
          System.getProperty("user.name")));


      createFile(fs, new Path("/test/tmp/testDelete"));
      TestCase.assertTrue(fs.delete(new Path("/test/tmp/testDelete"), false));
      TestCase.assertTrue(fs.undelete(new Path("/test/tmp/testDelete"),

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      TestCase.assertFalse(fs.undelete(new Path("/tmp/testDelete"),
          System.getProperty("user.name")));


      createFile(fs, new Path("/test/tmp/testDelete"));
      TestCase.assertTrue(fs.delete(new Path("/test/tmp/testDelete"), false));
      TestCase.assertTrue(fs.undelete(new Path("/test/tmp/testDelete"),
          System.getProperty("user.name")));
      
      // Test another delete() overload method with skipTrash=false
      fs.delete(new Path("/tmp"), true, true);
      fs.delete(new Path("/test"), true, true);

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      // non empty directory is not moved if recursive is not set
      TestCase.assertFalse(fs.delete(new Path("/test"), false, false));


      // Files are expected to move to trash.
      TestCase.assertTrue(fs.delete(new Path("/test"), true, false));
      TestCase.assertTrue(fs.undelete(new Path("/test"),
          System.getProperty("user.name")));
      createFile(fs, new Path("/test1/testDelete"));
      TestCase.assertTrue(fs
          .delete(new Path("/test1/testDelete"), false, false));
      TestCase.assertTrue(fs.delete(new Path("/test1"), false, false));

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          System.getProperty("user.name")));
      createFile(fs, new Path("/test1/testDelete"));
      TestCase.assertTrue(fs
          .delete(new Path("/test1/testDelete"), false, false));
      TestCase.assertTrue(fs.delete(new Path("/test1"), false, false));
      TestCase.assertTrue(fs.undelete(new Path("/test1"),
          System.getProperty("user.name")));
      TestCase.assertTrue(fs.undelete(new Path("/test1/testDelete"),
          System.getProperty("user.name")));


      // temp directory automatically skips trash.

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      TestCase.assertTrue(fs
          .delete(new Path("/test1/testDelete"), false, false));
      TestCase.assertTrue(fs.delete(new Path("/test1"), false, false));
      TestCase.assertTrue(fs.undelete(new Path("/test1"),
          System.getProperty("user.name")));
      TestCase.assertTrue(fs.undelete(new Path("/test1/testDelete"),
          System.getProperty("user.name")));


      // temp directory automatically skips trash.
      createFile(fs, new Path("/tmp/testDelete"));
      TestCase.assertTrue(fs.delete(new Path("/tmp/testDelete"), false, false));

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