/*
 * The Alluxio Open Foundation licenses this work under the Apache License, version 2.0
 * (the "License"). You may not use this work except in compliance with the License, which is
 * available at www.apache.org/licenses/LICENSE-2.0
 *
 * This software is distributed on an "AS IS" basis, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND,
 * either express or implied, as more fully set forth in the License.
 *
 * See the NOTICE file distributed with this work for information regarding copyright ownership.
 */

package alluxio.underfs.cosn;

import alluxio.Constants;
import alluxio.underfs.hdfs.HdfsUnderFileSystemFactory;
import alluxio.underfs.UnderFileSystemConfiguration;

import javax.annotation.concurrent.ThreadSafe;

/**
 * Factory for creating {@link HdfsUnderFileSystem}.
 *
 * It caches created {@link HdfsUnderFileSystem}s, using the scheme and authority pair as the key.
 */
@ThreadSafe
public class CosNUnderFileSystemFactory extends HdfsUnderFileSystemFactory {

  @Override
  public boolean supportsPath(String path) {
    return path != null && path.startsWith(Constants.HEADER_COSN);
  }

  @Override
  public boolean supportsPath(String path, UnderFileSystemConfiguration conf) {
    return supportsPath(path);
  }
}

@@ -564,16 +564,65 @@
 stants;%0A
+import alluxio.underfs.hdfs.HdfsUnderFileSystem;%0A
 import a

Add import statement to make link in Java doc workable