org.apache.drill.exec.work.batch.FileTest.java Source code

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Here is the source code for org.apache.drill.exec.work.batch.FileTest.java

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/**
 * 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.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 {
    public static void main(String[] args) throws IOException {
        Configuration conf = new Configuration();
        conf.set(FileSystem.FS_DEFAULT_NAME_KEY, "sync:///");
        System.out.println(FileSystem.getDefaultUri(conf));
        FileSystem fs = FileSystem.get(conf);
        //    FileSystem fs = new LocalSyncableFileSystem(conf);
        Path path = new Path("/tmp/testFile");
        FSDataOutputStream out = fs.create(path);
        byte[] s = "hello world".getBytes();
        out.write(s);
        out.sync();
        //    out.close();
        FSDataInputStream in = fs.open(path);
        byte[] bytes = new byte[s.length];
        in.read(bytes);
        System.out.println(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);
        System.out.println(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.sync();
            long t = watch.elapsed(TimeUnit.MILLISECONDS);
            System.out.printf("Elapsed: %d. Rate %d.\n", t, (long) ((long) bytes.length * 1000L / t));
        }
    }
}