flink-filesystems/flink-hadoop-fs/src/test/java/org/apache/flink/runtime/fs/hdfs/HadoopLocalFileSystemBehaviorTest.java

/*
 * 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.
 */

package org.apache.flink.runtime.fs.hdfs;

import org.apache.flink.core.fs.FileSystem;
import org.apache.flink.core.fs.FileSystemBehaviorTestSuite;
import org.apache.flink.core.fs.FileSystemKind;
import org.apache.flink.core.fs.Path;
import org.apache.flink.core.fs.local.LocalFileSystem;

import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.fs.RawLocalFileSystem;
import org.apache.hadoop.util.VersionInfo;
import org.junit.Assume;
import org.junit.Rule;
import org.junit.rules.TemporaryFolder;

/**
 * Behavior tests for HDFS.
 */
public class HadoopLocalFileSystemBehaviorTest extends FileSystemBehaviorTestSuite {

	@Rule
	public final TemporaryFolder tmp = new TemporaryFolder();

	@Override
	public FileSystem getFileSystem() throws Exception {
		org.apache.hadoop.fs.FileSystem fs = new RawLocalFileSystem();
		Configuration hadoopConfig = new Configuration();
		fs.initialize(LocalFileSystem.getLocalFsURI(), hadoopConfig);
		return new HadoopFileSystem(hadoopConfig, fs);
	}

	@Override
	public Path getBasePath() throws Exception {
		return new Path(tmp.newFolder().toURI());
	}

	@Override
	public FileSystemKind getFileSystemKind() {
		return FileSystemKind.FILE_SYSTEM;
	}

	// ------------------------------------------------------------------------

	/**
	 * This test needs to be skipped for earlier Hadoop versions because those
	 * have a bug.
	 */
	@Override
	public void testMkdirsFailsForExistingFile() throws Exception {
		final String versionString = VersionInfo.getVersion();
		final String prefix = versionString.substring(0, 3);
		final float version = Float.parseFloat(prefix);
		Assume.assumeTrue("Cannot execute this test on Hadoop prior to 2.8", version >= 2.8f);

		super.testMkdirsFailsForExistingFile();
	}
}