| /* |
| * 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.drill.exec.work.batch; |
| |
| import java.io.File; |
| import java.io.FileInputStream; |
| import java.io.FileOutputStream; |
| import java.io.IOException; |
| import java.nio.charset.StandardCharsets; |
| import java.util.concurrent.TimeUnit; |
| |
| import org.apache.hadoop.conf.Configuration; |
| import org.apache.hadoop.fs.FSDataInputStream; |
| import org.apache.hadoop.fs.FSDataOutputStream; |
| import org.apache.hadoop.fs.FileSystem; |
| import org.apache.hadoop.fs.Path; |
| |
| import com.google.common.base.Stopwatch; |
| |
| public class FileTest { |
| private static final org.slf4j.Logger logger = org.slf4j.LoggerFactory.getLogger(FileTest.class); |
| |
| public static void main(String[] args) throws IOException { |
| Configuration conf = new Configuration(); |
| conf.set(FileSystem.FS_DEFAULT_NAME_KEY, "sync:///"); |
| logger.info(FileSystem.getDefaultUri(conf).toString()); |
| FileSystem fs = FileSystem.get(conf); |
| Path path = new Path("/tmp/testFile"); |
| FSDataOutputStream out = fs.create(path); |
| byte[] s = "hello world".getBytes(StandardCharsets.UTF_8); |
| out.write(s); |
| out.hflush(); |
| FSDataInputStream in = fs.open(path); |
| byte[] bytes = new byte[s.length]; |
| in.read(bytes); |
| logger.info(new String(bytes)); |
| File file = new File("/tmp/testFile"); |
| FileOutputStream fos = new FileOutputStream(file); |
| FileInputStream fis = new FileInputStream(file); |
| fos.write(s); |
| fos.getFD().sync(); |
| fis.read(bytes); |
| logger.info(new String(bytes)); |
| out = fs.create(new Path("/tmp/file")); |
| for (int i = 0; i < 100; i++) { |
| bytes = new byte[256*1024]; |
| Stopwatch watch = Stopwatch.createStarted(); |
| out.write(bytes); |
| out.hflush(); |
| long t = watch.elapsed(TimeUnit.MILLISECONDS); |
| logger.info(String.format("Elapsed: %d. Rate %d.\n", t, (long) ((long) bytes.length * 1000L / t))); |
| } |
| } |
| } |