public void testLease() throws Exception {
Configuration conf = new Configuration();
MiniDFSCluster cluster = new MiniDFSCluster(conf, 2, true, null);
try {
FileSystem fs = cluster.getFileSystem();
assertTrue(fs.mkdirs(dir));
Path a = new Path(dir, "a");
Path b = new Path(dir, "b");
DataOutputStream a_out = fs.create(a);
a_out.writeBytes("something");
assertTrue(hasLease(cluster, a));
assertTrue(!hasLease(cluster, b));
DataOutputStream b_out = fs.create(b);
b_out.writeBytes("something");
assertTrue(hasLease(cluster, a));
assertTrue(hasLease(cluster, b));
a_out.close();
b_out.close();
assertTrue(!hasLease(cluster, a));
assertTrue(!hasLease(cluster, b));
fs.delete(dir, true);
} finally {
if (cluster != null) {
cluster.shutdown();
}
}
}
/** Tests mod & access time in DFS. */
public void testTimes() throws IOException {
Configuration conf = new HdfsConfiguration();
final int MAX_IDLE_TIME = 2000; // 2s
conf.setInt("ipc.client.connection.maxidletime", MAX_IDLE_TIME);
conf.setInt(DFSConfigKeys.DFS_NAMENODE_HEARTBEAT_RECHECK_INTERVAL_KEY, 1000);
conf.setInt(DFSConfigKeys.DFS_HEARTBEAT_INTERVAL_KEY, 1);
MiniDFSCluster cluster = new MiniDFSCluster.Builder(conf).numDataNodes(numDatanodes).build();
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);
long mtime4 = System.currentTimeMillis() - (3600L * 1000L);
long atime4 = System.currentTimeMillis();
fileSys.setTimes(dir1, mtime4, atime4);
// check new modification time on file
stat = fileSys.getFileStatus(dir1);
assertTrue("Not matching the modification times", mtime4 == stat.getModificationTime());
assertTrue("Not matching the access times", atime4 == stat.getAccessTime());
Path nonExistingDir = new Path(dir1, "/nonExistingDir/");
try {
fileSys.setTimes(nonExistingDir, mtime4, atime4);
fail("Expecting FileNotFoundException");
} catch (FileNotFoundException e) {
assertTrue(
e.getMessage()
.contains("File/Directory " + nonExistingDir.toString() + " does not exist."));
}
// shutdown cluster and restart
cluster.shutdown();
try {
Thread.sleep(2 * MAX_IDLE_TIME);
} catch (InterruptedException e) {
}
cluster = new MiniDFSCluster.Builder(conf).nameNodePort(nnport).format(false).build();
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();
}
}
static boolean hasLease(MiniDFSCluster cluster, Path src) {
return cluster.getNameNode().namesystem.leaseManager.getLeaseByPath(src.toString()) != null;
}
/** Tests mod time change at close in DFS. */
public void testTimesAtClose() throws IOException {
Configuration conf = new HdfsConfiguration();
final int MAX_IDLE_TIME = 2000; // 2s
int replicas = 1;
// parameter initialization
conf.setInt("ipc.client.connection.maxidletime", MAX_IDLE_TIME);
conf.setInt(DFSConfigKeys.DFS_NAMENODE_HEARTBEAT_RECHECK_INTERVAL_KEY, 1000);
conf.setInt(DFSConfigKeys.DFS_HEARTBEAT_INTERVAL_KEY, 1);
conf.setInt(DFSConfigKeys.DFS_DATANODE_HANDLER_COUNT_KEY, 50);
MiniDFSCluster cluster = new MiniDFSCluster.Builder(conf).numDataNodes(numDatanodes).build();
cluster.waitActive();
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();
assertTrue(fileSys instanceof DistributedFileSystem);
try {
// create a new file and write to it
Path file1 = new Path("/simple.dat");
FSDataOutputStream stm = writeFile(fileSys, file1, replicas);
System.out.println("Created and wrote file simple.dat");
FileStatus statBeforeClose = fileSys.getFileStatus(file1);
long mtimeBeforeClose = statBeforeClose.getModificationTime();
String mdateBeforeClose = dateForm.format(new Date(mtimeBeforeClose));
System.out.println(
"mtime on "
+ file1
+ " before close is "
+ mdateBeforeClose
+ " ("
+ mtimeBeforeClose
+ ")");
assertTrue(mtimeBeforeClose != 0);
// close file after writing
stm.close();
System.out.println("Closed file.");
FileStatus statAfterClose = fileSys.getFileStatus(file1);
long mtimeAfterClose = statAfterClose.getModificationTime();
String mdateAfterClose = dateForm.format(new Date(mtimeAfterClose));
System.out.println(
"mtime on "
+ file1
+ " after close is "
+ mdateAfterClose
+ " ("
+ mtimeAfterClose
+ ")");
assertTrue(mtimeAfterClose != 0);
assertTrue(mtimeBeforeClose != mtimeAfterClose);
cleanupFile(fileSys, file1);
} catch (IOException e) {
info = client.datanodeReport(DatanodeReportType.ALL);
printDatanodeReport(info);
throw e;
} finally {
fileSys.close();
cluster.shutdown();
}
}