/**
* 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.hadoop.hdfs;
import junit.framework.TestCase;
import java.io.*;
import java.util.Random;
import java.net.*;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.hdfs.protocol.DatanodeInfo;
import org.apache.hadoop.hdfs.protocol.FSConstants.DatanodeReportType;
import org.apache.hadoop.fs.FSDataOutputStream;
import org.apache.hadoop.fs.FileSystem;
import org.apache.hadoop.fs.Path;
import org.apache.hadoop.fs.FileStatus;
import java.text.SimpleDateFormat;
import java.util.Date;
/**
* This class tests the access time on files.
*
*/
public class TestSetTimes extends TestCase {
static final long seed = 0xDEADBEEFL;
static final int blockSize = 8192;
static final int fileSize = 16384;
static final int numDatanodes = 1;
static final SimpleDateFormat dateForm = new SimpleDateFormat("yyyy-MM-dd HH:mm");
Random myrand = new Random();
Path hostsFile;
Path excludeFile;
private FSDataOutputStream writeFile(FileSystem fileSys, Path name, int repl)
throws IOException {
FSDataOutputStream stm = fileSys.create(name, true,
fileSys.getConf().getInt("io.file.buffer.size", 4096),
(short)repl, (long)blockSize);
byte[] buffer = new byte[fileSize];
Random rand = new Random(seed);
rand.nextBytes(buffer);
stm.write(buffer);
return stm;
}
private void cleanupFile(FileSystem fileSys, Path name) throws IOException {
assertTrue(fileSys.exists(name));
fileSys.delete(name, true);
assertTrue(!fileSys.exists(name));
}
private void printDatanodeReport(DatanodeInfo[] info) {
System.out.println("-------------------------------------------------");
for (int i = 0; i < info.length; i++) {
System.out.println(info[i].getDatanodeReport());
System.out.println();
}
}
/**
* Tests mod & access time in DFS.
*/
public void testTimes() throws IOException {
Configuration conf = new Configuration();
final int MAX_IDLE_TIME = 2000; // 2s
conf.setInt("ipc.client.connection.maxidletime", MAX_IDLE_TIME);
conf.setInt("heartbeat.recheck.interval", 1000);
conf.setInt("dfs.heartbeat.interval", 1);
MiniDFSCluster cluster = new MiniDFSCluster(conf, numDatanodes, true, null);
cluster.waitActive();
final int nnport = cluster.getNameNodePort();
InetSocketAddress addr = new InetSocketAddress("localhost",
cluster.getNameNodePort());
DFSClient client = new DFSClient(addr, conf);
DatanodeInfo[] info = client.datanodeReport(DatanodeReportType.LIVE);
assertEquals("Number of Datanodes ", numDatanodes, info.length);
FileSystem fileSys = cluster.getFileSystem();
int replicas = 1;
assertTrue(fileSys instanceof DistributedFileSystem);
try {
//
// create file and record atime/mtime
//
System.out.println("Creating testdir1 and testdir1/test1.dat.");
Path dir1 = new Path("testdir1");
Path file1 = new Path(dir1, "test1.dat");
FSDataOutputStream stm = writeFile(fileSys, file1, replicas);
FileStatus stat = fileSys.getFileStatus(file1);
long atimeBeforeClose = stat.getAccessTime();
String adate = dateForm.format(new Date(atimeBeforeClose));
System.out.println("atime on " + file1 + " before close is " +
adate + " (" + atimeBeforeClose + ")");
assertTrue(atimeBeforeClose != 0);
stm.close();
stat = fileSys.getFileStatus(file1);
long atime1 = stat.getAccessTime();
long mtime1 = stat.getModificationTime();
adate = dateForm.format(new Date(atime1));
String mdate = dateForm.format(new Date(mtime1));
System.out.println("atime on " + file1 + " is " + adate +
" (" + atime1 + ")");
System.out.println("mtime on " + file1 + " is " + mdate +
" (" + mtime1 + ")");
assertTrue(atime1 != 0);
//
// record dir times
//
stat = fileSys.getFileStatus(dir1);
long mdir1 = stat.getAccessTime();
assertTrue(mdir1 == 0);
// set the access time to be one day in the past
long atime2 = atime1 - (24L * 3600L * 1000L);
fileSys.setTimes(file1, -1, atime2);
// check new access time on file
stat = fileSys.getFileStatus(file1);
long atime3 = stat.getAccessTime();
String adate3 = dateForm.format(new Date(atime3));
System.out.println("new atime on " + file1 + " is " +
adate3 + " (" + atime3 + ")");
assertTrue(atime2 == atime3);
assertTrue(mtime1 == stat.getModificationTime());
// set the modification time to be 1 hour in the past
long mtime2 = mtime1 - (3600L * 1000L);
fileSys.setTimes(file1, mtime2, -1);
// check new modification time on file
stat = fileSys.getFileStatus(file1);
long mtime3 = stat.getModificationTime();
String mdate3 = dateForm.format(new Date(mtime3));
System.out.println("new mtime on " + file1 + " is " +
mdate3 + " (" + mtime3 + ")");
assertTrue(atime2 == stat.getAccessTime());
assertTrue(mtime2 == mtime3);
// shutdown cluster and restart
cluster.shutdown();
try {Thread.sleep(2*MAX_IDLE_TIME);} catch (InterruptedException e) {}
cluster = new MiniDFSCluster(nnport, conf, 1, false, true,
null, null, null);
cluster.waitActive();
fileSys = cluster.getFileSystem();
// verify that access times and modification times persist after a
// cluster restart.
System.out.println("Verifying times after cluster restart");
stat = fileSys.getFileStatus(file1);
assertTrue(atime2 == stat.getAccessTime());
assertTrue(mtime3 == stat.getModificationTime());
cleanupFile(fileSys, file1);
cleanupFile(fileSys, dir1);
} catch (IOException e) {
info = client.datanodeReport(DatanodeReportType.ALL);
printDatanodeReport(info);
throw e;
} finally {
fileSys.close();
cluster.shutdown();
}
}
public static void main(String[] args) throws Exception {
new TestSetTimes().testTimes();
}
}