/**
* Make sure at least one non-transient volume has a saved copy of the replica. An infinite loop
* is used to ensure the async lazy persist tasks are completely done before verification. Caller
* of ensureLazyPersistBlocksAreSaved expects either a successful pass or timeout failure.
*/
protected final void ensureLazyPersistBlocksAreSaved(LocatedBlocks locatedBlocks)
throws IOException, InterruptedException {
final String bpid = cluster.getNamesystem().getBlockPoolId();
List<? extends FsVolumeSpi> volumes = cluster.getDataNodes().get(0).getFSDataset().getVolumes();
final Set<Long> persistedBlockIds = new HashSet<Long>();
while (persistedBlockIds.size() < locatedBlocks.getLocatedBlocks().size()) {
// Take 1 second sleep before each verification iteration
Thread.sleep(1000);
for (LocatedBlock lb : locatedBlocks.getLocatedBlocks()) {
for (FsVolumeSpi v : volumes) {
if (v.isTransientStorage()) {
continue;
}
FsVolumeImpl volume = (FsVolumeImpl) v;
File lazyPersistDir = volume.getBlockPoolSlice(bpid).getLazypersistDir();
long blockId = lb.getBlock().getBlockId();
File targetDir = DatanodeUtil.idToBlockDir(lazyPersistDir, blockId);
File blockFile = new File(targetDir, lb.getBlock().getBlockName());
if (blockFile.exists()) {
// Found a persisted copy for this block and added to the Set
persistedBlockIds.add(blockId);
}
}
}
}
// We should have found a persisted copy for each located block.
assertThat(persistedBlockIds.size(), is(locatedBlocks.getLocatedBlocks().size()));
}
/*
* Since NameNode will not persist any locations of the block, addBlock()
* retry call after restart NN should re-select the locations and return to
* client. refer HDFS-5257
*/
@Test
public void testAddBlockRetryShouldReturnBlockWithLocations() throws Exception {
final String src = "/testAddBlockRetryShouldReturnBlockWithLocations";
NamenodeProtocols nameNodeRpc = cluster.getNameNodeRpc();
// create file
nameNodeRpc.create(
src,
FsPermission.getFileDefault(),
"clientName",
new EnumSetWritable<CreateFlag>(EnumSet.of(CreateFlag.CREATE)),
true,
(short) 3,
1024,
null);
// start first addBlock()
LOG.info("Starting first addBlock for " + src);
LocatedBlock lb1 =
nameNodeRpc.addBlock(src, "clientName", null, null, INodeId.GRANDFATHER_INODE_ID, null);
assertTrue("Block locations should be present", lb1.getLocations().length > 0);
cluster.restartNameNode();
nameNodeRpc = cluster.getNameNodeRpc();
LocatedBlock lb2 =
nameNodeRpc.addBlock(src, "clientName", null, null, INodeId.GRANDFATHER_INODE_ID, null);
assertEquals("Blocks are not equal", lb1.getBlock(), lb2.getBlock());
assertTrue("Wrong locations with retry", lb2.getLocations().length > 0);
}
private DNAddrPair chooseDataNode(LocatedBlock block) throws IOException {
while (true) {
DatanodeInfo[] nodes = block.getLocations();
try {
DatanodeInfo chosenNode = bestNode(nodes, deadNodes);
InetSocketAddress targetAddr = NetUtils.createSocketAddr(chosenNode.getXferAddr());
return new DNAddrPair(chosenNode, targetAddr);
} catch (IOException ie) {
String blockInfo = block.getBlock() + " file=" + src;
if (failures >= dfsClient.getMaxBlockAcquireFailures()) {
throw new BlockMissingException(
src, "Could not obtain block: " + blockInfo, block.getStartOffset());
}
if (nodes == null || nodes.length == 0) {
DFSClient.LOG.info("No node available for block: " + blockInfo);
}
DFSClient.LOG.info(
"Could not obtain block "
+ block.getBlock()
+ " from any node: "
+ ie
+ ". Will get new block locations from namenode and retry...");
try {
// Introducing a random factor to the wait time before another retry.
// The wait time is dependent on # of failures and a random factor.
// At the first time of getting a BlockMissingException, the wait time
// is a random number between 0..3000 ms. If the first retry
// still fails, we will wait 3000 ms grace period before the 2nd retry.
// Also at the second retry, the waiting window is expanded to 6000 ms
// alleviating the request rate from the server. Similarly the 3rd retry
// will wait 6000ms grace period before retry and the waiting window is
// expanded to 9000ms.
double waitTime =
timeWindow * failures
+ // grace period for the last round of attempt
timeWindow
* (failures + 1)
* DFSUtil.getRandom().nextDouble(); // expanding time window for each failure
DFSClient.LOG.warn(
"DFS chooseDataNode: got # "
+ (failures + 1)
+ " IOException, will wait for "
+ waitTime
+ " msec.");
Thread.sleep((long) waitTime);
} catch (InterruptedException iex) {
}
deadNodes.clear(); // 2nd option is to remove only nodes[blockId]
openInfo();
block = getBlockAt(block.getStartOffset(), false);
failures++;
continue;
}
}
}
private void addBlocks(String fileName, String clientName) throws IOException {
for (int jdx = 0; jdx < blocksPerFile; jdx++) {
LocatedBlock loc = nameNode.addBlock(fileName, clientName);
for (DatanodeInfo dnInfo : loc.getLocations()) {
int dnIdx = Arrays.binarySearch(datanodes, dnInfo.getName());
datanodes[dnIdx].addBlock(loc.getBlock());
nameNode.blockReceived(
datanodes[dnIdx].dnRegistration, new Block[] {loc.getBlock()}, new String[] {""});
}
}
}
/** Read the block length from one of the datanodes. */
private long readBlockLength(LocatedBlock locatedblock) throws IOException {
assert locatedblock != null : "LocatedBlock cannot be null";
int replicaNotFoundCount = locatedblock.getLocations().length;
for (DatanodeInfo datanode : locatedblock.getLocations()) {
ClientDatanodeProtocol cdp = null;
try {
cdp =
DFSUtil.createClientDatanodeProtocolProxy(
datanode, dfsClient.conf, dfsClient.getConf().socketTimeout, locatedblock);
final long n = cdp.getReplicaVisibleLength(locatedblock.getBlock());
if (n >= 0) {
return n;
}
} catch (IOException ioe) {
if (ioe instanceof RemoteException
&& (((RemoteException) ioe).unwrapRemoteException()
instanceof ReplicaNotFoundException)) {
// special case : replica might not be on the DN, treat as 0 length
replicaNotFoundCount--;
}
if (DFSClient.LOG.isDebugEnabled()) {
DFSClient.LOG.debug(
"Failed to getReplicaVisibleLength from datanode "
+ datanode
+ " for block "
+ locatedblock.getBlock(),
ioe);
}
} finally {
if (cdp != null) {
RPC.stopProxy(cdp);
}
}
}
// Namenode told us about these locations, but none know about the replica
// means that we hit the race between pipeline creation start and end.
// we require all 3 because some other exception could have happened
// on a DN that has it. we want to report that error
if (replicaNotFoundCount == 0) {
return 0;
}
throw new IOException("Cannot obtain block length for " + locatedblock);
}
/** Test that the {@link PlacementMonitor.BlockAndDatanodeResolver} works correctly. */
@Test
public void testBlockAndDatanodeResolver() throws Exception {
setupCluster();
try {
Path src = new Path("/dir/file");
Path parity = new Path("/raid/dir/file");
DFSTestUtil.createFile(fs, src, 20, (short) 2, 0L);
DFSTestUtil.createFile(fs, parity, 11, (short) 2, 0L);
DFSTestUtil.waitReplication(fs, src, (short) 2);
DFSTestUtil.waitReplication(fs, parity, (short) 2);
LocatedBlocks srcLbs, parityLbs;
List<BlockInfo> srcInfos, parityInfos;
srcLbs = namenode.getBlockLocations(src.toString(), 4, 10);
srcInfos = placementMonitor.getBlockInfos(fs, src, 4, 10);
parityLbs = namenode.getBlockLocations(parity.toString(), 3, 7);
parityInfos = placementMonitor.getBlockInfos(fs, parity, 3, 7);
Assert.assertEquals(10, srcLbs.getLocatedBlocks().size());
Assert.assertEquals(7, parityLbs.getLocatedBlocks().size());
Assert.assertEquals(10, srcInfos.size());
Assert.assertEquals(7, parityInfos.size());
BlockAndDatanodeResolver resolver = new BlockAndDatanodeResolver(src, fs, parity, fs);
for (int i = 0; i < srcInfos.size(); ++i) {
LocatedBlock lb = resolver.getLocatedBlock(srcInfos.get(i));
Assert.assertEquals(srcLbs.get(i).getBlock(), lb.getBlock());
for (String nodeName : srcInfos.get(i).getNames()) {
DatanodeInfo node = resolver.getDatanodeInfo(nodeName);
Assert.assertEquals(node.getName(), nodeName);
}
}
for (int i = 0; i < parityInfos.size(); ++i) {
LocatedBlock lb = resolver.getLocatedBlock(parityInfos.get(i));
Assert.assertEquals(parityLbs.get(i).getBlock(), lb.getBlock());
for (String nodeName : parityInfos.get(i).getNames()) {
DatanodeInfo node = resolver.getDatanodeInfo(nodeName);
Assert.assertEquals(node.getName(), nodeName);
}
}
} finally {
if (cluster != null) {
cluster.shutdown();
}
if (placementMonitor != null) {
placementMonitor.stop();
}
}
}
static ClientDatanodeProtocolPB createClientDatanodeProtocolProxy(
DatanodeID datanodeid,
Configuration conf,
int socketTimeout,
boolean connectToDnViaHostname,
LocatedBlock locatedBlock)
throws IOException {
final String dnAddr = datanodeid.getIpcAddr(connectToDnViaHostname);
InetSocketAddress addr = NetUtils.createSocketAddr(dnAddr);
if (LOG.isDebugEnabled()) {
LOG.debug("Connecting to datanode " + dnAddr + " addr=" + addr);
}
// Since we're creating a new UserGroupInformation here, we know that no
// future RPC proxies will be able to re-use the same connection. And
// usages of this proxy tend to be one-off calls.
//
// This is a temporary fix: callers should really achieve this by using
// RPC.stopProxy() on the resulting object, but this is currently not
// working in trunk. See the discussion on HDFS-1965.
Configuration confWithNoIpcIdle = new Configuration(conf);
confWithNoIpcIdle.setInt(
CommonConfigurationKeysPublic.IPC_CLIENT_CONNECTION_MAXIDLETIME_KEY, 0);
UserGroupInformation ticket =
UserGroupInformation.createRemoteUser(locatedBlock.getBlock().getLocalBlock().toString());
ticket.addToken(locatedBlock.getBlockToken());
return createClientDatanodeProtocolProxy(
addr, ticket, confWithNoIpcIdle, NetUtils.getDefaultSocketFactory(conf), socketTimeout);
}
/** removes a specified block from MiniDFS storage and reports it as corrupt */
private void removeAndReportBlock(
DistributedFileSystem blockDfs, Path filePath, LocatedBlock block) throws IOException {
TestRaidDfs.corruptBlock(filePath, block.getBlock(), NUM_DATANODES, true);
// report deleted block to the name node
LocatedBlock[] toReport = {block};
blockDfs.getClient().namenode.reportBadBlocks(toReport);
}
/**
* Setup a {@link MiniDFSCluster}. Create a block with both {@link State#NORMAL} and {@link
* State#READ_ONLY_SHARED} replicas.
*/
@Before
public void setup() throws IOException, InterruptedException {
conf = new HdfsConfiguration();
SimulatedFSDataset.setFactory(conf);
Configuration[] overlays = new Configuration[NUM_DATANODES];
for (int i = 0; i < overlays.length; i++) {
overlays[i] = new Configuration();
if (i == RO_NODE_INDEX) {
overlays[i].setEnum(
SimulatedFSDataset.CONFIG_PROPERTY_STATE,
i == RO_NODE_INDEX ? READ_ONLY_SHARED : NORMAL);
}
}
cluster =
new MiniDFSCluster.Builder(conf)
.numDataNodes(NUM_DATANODES)
.dataNodeConfOverlays(overlays)
.build();
fs = cluster.getFileSystem();
blockManager = cluster.getNameNode().getNamesystem().getBlockManager();
datanodeManager = blockManager.getDatanodeManager();
client =
new DFSClient(
new InetSocketAddress("localhost", cluster.getNameNodePort()),
cluster.getConfiguration(0));
for (int i = 0; i < NUM_DATANODES; i++) {
DataNode dataNode = cluster.getDataNodes().get(i);
validateStorageState(
BlockManagerTestUtil.getStorageReportsForDatanode(
datanodeManager.getDatanode(dataNode.getDatanodeId())),
i == RO_NODE_INDEX ? READ_ONLY_SHARED : NORMAL);
}
// Create a 1 block file
DFSTestUtil.createFile(fs, PATH, BLOCK_SIZE, BLOCK_SIZE, BLOCK_SIZE, (short) 1, seed);
LocatedBlock locatedBlock = getLocatedBlock();
extendedBlock = locatedBlock.getBlock();
block = extendedBlock.getLocalBlock();
assertThat(locatedBlock.getLocations().length, is(1));
normalDataNode = locatedBlock.getLocations()[0];
readOnlyDataNode =
datanodeManager.getDatanode(cluster.getDataNodes().get(RO_NODE_INDEX).getDatanodeId());
assertThat(normalDataNode, is(not(readOnlyDataNode)));
validateNumberReplicas(1);
// Inject the block into the datanode with READ_ONLY_SHARED storage
cluster.injectBlocks(0, RO_NODE_INDEX, Collections.singleton(block));
// There should now be 2 *locations* for the block
// Must wait until the NameNode has processed the block report for the injected blocks
waitForLocations(2);
}
/**
* The following test first creates a file. It verifies the block information from a datanode.
* Then, it updates the block with new information and verifies again.
*/
@Test
public void testBlockMetaDataInfo() throws Exception {
MiniDFSCluster cluster = null;
try {
cluster = new MiniDFSCluster.Builder(conf).numDataNodes(3).build();
cluster.waitActive();
// create a file
DistributedFileSystem dfs = (DistributedFileSystem) cluster.getFileSystem();
String filestr = "/foo";
Path filepath = new Path(filestr);
DFSTestUtil.createFile(dfs, filepath, 1024L, (short) 3, 0L);
assertTrue(dfs.exists(filepath));
// get block info
LocatedBlock locatedblock =
getLastLocatedBlock(DFSClientAdapter.getDFSClient(dfs).getNamenode(), filestr);
DatanodeInfo[] datanodeinfo = locatedblock.getLocations();
assertTrue(datanodeinfo.length > 0);
// connect to a data node
DataNode datanode = cluster.getDataNode(datanodeinfo[0].getIpcPort());
InterDatanodeProtocol idp =
DataNodeTestUtils.createInterDatanodeProtocolProxy(datanode, datanodeinfo[0], conf);
// stop block scanner, so we could compare lastScanTime
DataNodeTestUtils.shutdownBlockScanner(datanode);
// verify BlockMetaDataInfo
ExtendedBlock b = locatedblock.getBlock();
InterDatanodeProtocol.LOG.info("b=" + b + ", " + b.getClass());
checkMetaInfo(b, datanode);
long recoveryId = b.getGenerationStamp() + 1;
idp.initReplicaRecovery(new RecoveringBlock(b, locatedblock.getLocations(), recoveryId));
// verify updateBlock
ExtendedBlock newblock =
new ExtendedBlock(
b.getBlockPoolId(), b.getBlockId(), b.getNumBytes() / 2, b.getGenerationStamp() + 1);
idp.updateReplicaUnderRecovery(b, recoveryId, newblock.getNumBytes());
checkMetaInfo(newblock, datanode);
// Verify correct null response trying to init recovery for a missing block
ExtendedBlock badBlock = new ExtendedBlock("fake-pool", b.getBlockId(), 0, 0);
assertNull(
idp.initReplicaRecovery(
new RecoveringBlock(badBlock, locatedblock.getLocations(), recoveryId)));
} finally {
if (cluster != null) {
cluster.shutdown();
}
}
}
/**
* TC11: Racing rename
*
* @throws IOException an exception might be thrown
*/
public void testTC11() throws Exception {
final Path p = new Path("/TC11/foo");
System.out.println("p=" + p);
// a. Create file and write one block of data. Close file.
final int len1 = (int) BLOCK_SIZE;
{
FSDataOutputStream out = fs.create(p, false, buffersize, REPLICATION, BLOCK_SIZE);
AppendTestUtil.write(out, 0, len1);
out.close();
}
// b. Reopen file in "append" mode. Append half block of data.
FSDataOutputStream out = fs.append(p);
final int len2 = (int) BLOCK_SIZE / 2;
AppendTestUtil.write(out, len1, len2);
out.hflush();
// c. Rename file to file.new.
final Path pnew = new Path(p + ".new");
assertTrue(fs.rename(p, pnew));
// d. Close file handle that was opened in (b).
try {
out.close();
fail("close() should throw an exception");
} catch (Exception e) {
AppendTestUtil.LOG.info("GOOD!", e);
}
// wait for the lease recovery
cluster.setLeasePeriod(1000, 1000);
AppendTestUtil.sleep(5000);
// check block sizes
final long len = fs.getFileStatus(pnew).getLen();
final LocatedBlocks locatedblocks =
fs.dfs.getNamenode().getBlockLocations(pnew.toString(), 0L, len);
final int numblock = locatedblocks.locatedBlockCount();
for (int i = 0; i < numblock; i++) {
final LocatedBlock lb = locatedblocks.get(i);
final Block blk = lb.getBlock();
final long size = lb.getBlockSize();
if (i < numblock - 1) {
assertEquals(BLOCK_SIZE, size);
}
for (DatanodeInfo datanodeinfo : lb.getLocations()) {
final DataNode dn = cluster.getDataNode(datanodeinfo.getIpcPort());
final Block metainfo = dn.data.getStoredBlock(blk.getBlockId());
assertEquals(size, metainfo.getNumBytes());
}
}
}
protected final boolean verifyBlockDeletedFromDir(File dir, LocatedBlocks locatedBlocks) {
for (LocatedBlock lb : locatedBlocks.getLocatedBlocks()) {
File targetDir = DatanodeUtil.idToBlockDir(dir, lb.getBlock().getBlockId());
File blockFile = new File(targetDir, lb.getBlock().getBlockName());
if (blockFile.exists()) {
LOG.warn("blockFile: " + blockFile.getAbsolutePath() + " exists after deletion.");
return false;
}
File metaFile =
new File(
targetDir,
DatanodeUtil.getMetaName(
lb.getBlock().getBlockName(), lb.getBlock().getGenerationStamp()));
if (metaFile.exists()) {
LOG.warn("metaFile: " + metaFile.getAbsolutePath() + " exists after deletion.");
return false;
}
}
return true;
}
/** Convert a LocatedBlock to a Json map. */
private static Map<String, Object> toJsonMap(final LocatedBlock locatedblock) throws IOException {
if (locatedblock == null) {
return null;
}
final Map<String, Object> m = new TreeMap<String, Object>();
m.put("blockToken", toJsonMap(locatedblock.getBlockToken()));
m.put("isCorrupt", locatedblock.isCorrupt());
m.put("startOffset", locatedblock.getStartOffset());
m.put("block", toJsonMap(locatedblock.getBlock()));
m.put("locations", toJsonArray(locatedblock.getLocations()));
return m;
}
/**
* try to access a block on a data node. If fails - throws exception
*
* @param datanode
* @param lblock
* @throws IOException
*/
private void accessBlock(DatanodeInfo datanode, LocatedBlock lblock) throws IOException {
InetSocketAddress targetAddr = null;
ExtendedBlock block = lblock.getBlock();
targetAddr = NetUtils.createSocketAddr(datanode.getXferAddr());
BlockReader blockReader =
new BlockReaderFactory(new DfsClientConf(conf))
.setInetSocketAddress(targetAddr)
.setBlock(block)
.setFileName(
BlockReaderFactory.getFileName(targetAddr, "test-blockpoolid", block.getBlockId()))
.setBlockToken(lblock.getBlockToken())
.setStartOffset(0)
.setLength(-1)
.setVerifyChecksum(true)
.setClientName("TestDataNodeVolumeFailure")
.setDatanodeInfo(datanode)
.setCachingStrategy(CachingStrategy.newDefaultStrategy())
.setClientCacheContext(ClientContext.getFromConf(conf))
.setConfiguration(conf)
.setTracer(FsTracer.get(conf))
.setRemotePeerFactory(
new RemotePeerFactory() {
@Override
public Peer newConnectedPeer(
InetSocketAddress addr,
Token<BlockTokenIdentifier> blockToken,
DatanodeID datanodeId)
throws IOException {
Peer peer = null;
Socket sock = NetUtils.getDefaultSocketFactory(conf).createSocket();
try {
sock.connect(addr, HdfsConstants.READ_TIMEOUT);
sock.setSoTimeout(HdfsConstants.READ_TIMEOUT);
peer = DFSUtilClient.peerFromSocket(sock);
} finally {
if (peer == null) {
IOUtils.closeSocket(sock);
}
}
return peer;
}
})
.build();
blockReader.close();
}
/**
* go to each block on the 2nd DataNode until it fails...
*
* @param path
* @param size
* @throws IOException
*/
private void triggerFailure(String path, long size) throws IOException {
NamenodeProtocols nn = cluster.getNameNodeRpc();
List<LocatedBlock> locatedBlocks = nn.getBlockLocations(path, 0, size).getLocatedBlocks();
for (LocatedBlock lb : locatedBlocks) {
DatanodeInfo dinfo = lb.getLocations()[1];
ExtendedBlock b = lb.getBlock();
try {
accessBlock(dinfo, lb);
} catch (IOException e) {
System.out.println(
"Failure triggered, on block: "
+ b.getBlockId()
+ "; corresponding volume should be removed by now");
break;
}
}
}
/**
* TC7: Corrupted replicas are present.
*
* @throws IOException an exception might be thrown
*/
public void testTC7() throws Exception {
final short repl = 2;
final Path p = new Path("/TC7/foo");
System.out.println("p=" + p);
// a. Create file with replication factor of 2. Write half block of data. Close file.
final int len1 = (int) (BLOCK_SIZE / 2);
{
FSDataOutputStream out = fs.create(p, false, buffersize, repl, BLOCK_SIZE);
AppendTestUtil.write(out, 0, len1);
out.close();
}
DFSTestUtil.waitReplication(fs, p, repl);
// b. Log into one datanode that has one replica of this block.
// Find the block file on this datanode and truncate it to zero size.
final LocatedBlocks locatedblocks =
fs.dfs.getNamenode().getBlockLocations(p.toString(), 0L, len1);
assertEquals(1, locatedblocks.locatedBlockCount());
final LocatedBlock lb = locatedblocks.get(0);
final Block blk = lb.getBlock();
assertEquals(len1, lb.getBlockSize());
DatanodeInfo[] datanodeinfos = lb.getLocations();
assertEquals(repl, datanodeinfos.length);
final DataNode dn = cluster.getDataNode(datanodeinfos[0].getIpcPort());
final FSDataset data = (FSDataset) dn.getFSDataset();
final RandomAccessFile raf = new RandomAccessFile(data.getBlockFile(blk), "rw");
AppendTestUtil.LOG.info("dn=" + dn + ", blk=" + blk + " (length=" + blk.getNumBytes() + ")");
assertEquals(len1, raf.length());
raf.setLength(0);
raf.close();
// c. Open file in "append mode". Append a new block worth of data. Close file.
final int len2 = (int) BLOCK_SIZE;
{
FSDataOutputStream out = fs.append(p);
AppendTestUtil.write(out, len1, len2);
out.close();
}
// d. Reopen file and read two blocks worth of data.
AppendTestUtil.check(fs, p, len1 + len2);
}
private int printLocatedBlocks(Path filePath) throws Exception {
LocatedBlocks lbs = dfs.getLocatedBlocks(filePath, 0L, Integer.MAX_VALUE);
StringBuilder sb = new StringBuilder();
sb.append("Path " + filePath + ":");
int maxRepl = 0;
for (LocatedBlock lb : lbs.getLocatedBlocks()) {
sb.append(lb.getBlock());
sb.append(":");
for (DatanodeInfo loc : lb.getLocations()) {
sb.append(loc.getHostName());
sb.append(" ");
}
if (lb.getLocations().length > maxRepl) {
maxRepl = lb.getLocations().length;
}
}
LOG.info(sb.toString());
return maxRepl;
}
public void testAbandonBlock() throws IOException {
MiniDFSCluster cluster = new MiniDFSCluster(CONF, 2, true, null);
FileSystem fs = cluster.getFileSystem();
String src = FILE_NAME_PREFIX + "foo";
FSDataOutputStream fout = null;
try {
// start writing a a file but not close it
fout = fs.create(new Path(src), true, 4096, (short) 1, 512L);
for (int i = 0; i < 1024; i++) {
fout.write(123);
}
fout.sync();
// try reading the block by someone
final DFSClient dfsclient = new DFSClient(NameNode.getAddress(CONF), CONF);
LocatedBlocks blocks = dfsclient.namenode.getBlockLocations(src, 0, 1);
LocatedBlock b = blocks.get(0);
try {
dfsclient.namenode.abandonBlock(b.getBlock(), src, "someone");
// previous line should throw an exception.
assertTrue(false);
} catch (IOException ioe) {
LOG.info("GREAT! " + StringUtils.stringifyException(ioe));
}
} finally {
try {
fout.close();
} catch (Exception e) {
}
try {
fs.close();
} catch (Exception e) {
}
try {
cluster.shutdown();
} catch (Exception e) {
}
}
}
/** Create a file with one block and corrupt some/all of the block replicas. */
private void createAFileWithCorruptedBlockReplicas(
Path filePath, short repl, int corruptBlockCount)
throws IOException, AccessControlException, FileNotFoundException, UnresolvedLinkException,
InterruptedException, TimeoutException {
DFSTestUtil.createFile(dfs, filePath, BLOCK_SIZE, repl, 0);
DFSTestUtil.waitReplication(dfs, filePath, repl);
// Locate the file blocks by asking name node
final LocatedBlocks locatedblocks =
dfs.dfs.getNamenode().getBlockLocations(filePath.toString(), 0L, BLOCK_SIZE);
Assert.assertEquals(repl, locatedblocks.get(0).getLocations().length);
// The file only has one block
LocatedBlock lblock = locatedblocks.get(0);
DatanodeInfo[] datanodeinfos = lblock.getLocations();
ExtendedBlock block = lblock.getBlock();
// corrupt some /all of the block replicas
for (int i = 0; i < corruptBlockCount; i++) {
DatanodeInfo dninfo = datanodeinfos[i];
final DataNode dn = cluster.getDataNode(dninfo.getIpcPort());
corruptBlock(block, dn);
LOG.debug("Corrupted block " + block.getBlockName() + " on data node " + dninfo);
}
}
/**
* Count datanodes that have copies of the blocks for a file put it into the map
*
* @param map
* @param path
* @param size
* @return
* @throws IOException
*/
private int countNNBlocks(Map<String, BlockLocs> map, String path, long size) throws IOException {
int total = 0;
NamenodeProtocols nn = cluster.getNameNodeRpc();
List<LocatedBlock> locatedBlocks = nn.getBlockLocations(path, 0, size).getLocatedBlocks();
// System.out.println("Number of blocks: " + locatedBlocks.size());
for (LocatedBlock lb : locatedBlocks) {
String blockId = "" + lb.getBlock().getBlockId();
// System.out.print(blockId + ": ");
DatanodeInfo[] dn_locs = lb.getLocations();
BlockLocs bl = map.get(blockId);
if (bl == null) {
bl = new BlockLocs();
}
// System.out.print(dn_info.name+",");
total += dn_locs.length;
bl.num_locs += dn_locs.length;
map.put(blockId, bl);
// System.out.println();
}
return total;
}
/** Get a BlockReader for the given block. */
public BlockReader getBlockReader(LocatedBlock testBlock, int offset, int lenToRead)
throws IOException {
InetSocketAddress targetAddr = null;
Socket sock = null;
ExtendedBlock block = testBlock.getBlock();
DatanodeInfo[] nodes = testBlock.getLocations();
targetAddr = NetUtils.createSocketAddr(nodes[0].getName());
sock = NetUtils.getDefaultSocketFactory(conf).createSocket();
sock.connect(targetAddr, HdfsServerConstants.READ_TIMEOUT);
sock.setSoTimeout(HdfsServerConstants.READ_TIMEOUT);
return BlockReaderFactory.newBlockReader(
new DFSClient.Conf(conf),
sock,
targetAddr.toString() + ":" + block.getBlockId(),
block,
testBlock.getBlockToken(),
offset,
lenToRead,
conf.getInt("io.file.buffer.size", 4096),
true,
"");
}
private long fetchLocatedBlocksAndGetLastBlockLength() throws IOException {
LocatedBlocks newInfo =
DFSClient.callGetBlockLocations(dfsClient.namenode, src, 0, prefetchSize);
if (DFSClient.LOG.isDebugEnabled()) {
DFSClient.LOG.debug("newInfo = " + newInfo);
}
if (newInfo == null) {
throw new IOException("Cannot open filename " + src);
}
if (locatedBlocks != null) {
Iterator<LocatedBlock> oldIter = locatedBlocks.getLocatedBlocks().iterator();
Iterator<LocatedBlock> newIter = newInfo.getLocatedBlocks().iterator();
while (oldIter.hasNext() && newIter.hasNext()) {
if (!oldIter.next().getBlock().equals(newIter.next().getBlock())) {
throw new IOException("Blocklist for " + src + " has changed!");
}
}
}
locatedBlocks = newInfo;
long lastBlockBeingWrittenLength = 0;
if (!locatedBlocks.isLastBlockComplete()) {
final LocatedBlock last = locatedBlocks.getLastLocatedBlock();
if (last != null) {
if (last.getLocations().length == 0) {
return -1;
}
final long len = readBlockLength(last);
last.getBlock().setNumBytes(len);
lastBlockBeingWrittenLength = len;
}
}
currentNode = null;
return lastBlockBeingWrittenLength;
}
// try reading a block using a BlockReader directly
protected void tryRead(final Configuration conf, LocatedBlock lblock, boolean shouldSucceed) {
InetSocketAddress targetAddr = null;
IOException ioe = null;
BlockReader blockReader = null;
ExtendedBlock block = lblock.getBlock();
try {
DatanodeInfo[] nodes = lblock.getLocations();
targetAddr = NetUtils.createSocketAddr(nodes[0].getXferAddr());
blockReader =
new BlockReaderFactory(new DfsClientConf(conf))
.setFileName(
BlockReaderFactory.getFileName(
targetAddr, "test-blockpoolid", block.getBlockId()))
.setBlock(block)
.setBlockToken(lblock.getBlockToken())
.setInetSocketAddress(targetAddr)
.setStartOffset(0)
.setLength(-1)
.setVerifyChecksum(true)
.setClientName("TestBlockTokenWithDFS")
.setDatanodeInfo(nodes[0])
.setCachingStrategy(CachingStrategy.newDefaultStrategy())
.setClientCacheContext(ClientContext.getFromConf(conf))
.setConfiguration(conf)
.setTracer(FsTracer.get(conf))
.setRemotePeerFactory(
new RemotePeerFactory() {
@Override
public Peer newConnectedPeer(
InetSocketAddress addr,
Token<BlockTokenIdentifier> blockToken,
DatanodeID datanodeId)
throws IOException {
Peer peer = null;
Socket sock = NetUtils.getDefaultSocketFactory(conf).createSocket();
try {
sock.connect(addr, HdfsConstants.READ_TIMEOUT);
sock.setSoTimeout(HdfsConstants.READ_TIMEOUT);
peer = DFSUtilClient.peerFromSocket(sock);
} finally {
if (peer == null) {
IOUtils.closeSocket(sock);
}
}
return peer;
}
})
.build();
} catch (IOException ex) {
ioe = ex;
} finally {
if (blockReader != null) {
try {
blockReader.close();
} catch (IOException e) {
throw new RuntimeException(e);
}
}
}
if (shouldSucceed) {
Assert.assertNotNull(
"OP_READ_BLOCK: access token is invalid, " + "when it is expected to be valid",
blockReader);
} else {
Assert.assertNotNull(
"OP_READ_BLOCK: access token is valid, " + "when it is expected to be invalid", ioe);
Assert.assertTrue(
"OP_READ_BLOCK failed due to reasons other than access token: ",
ioe instanceof InvalidBlockTokenException);
}
}
/**
* The following test first creates a file with a few blocks. It randomly truncates the replica of
* the last block stored in each datanode. Finally, it triggers block synchronization to
* synchronize all stored block.
*/
public void testBlockSynchronization() throws Exception {
final int ORG_FILE_SIZE = 3000;
Configuration conf = new HdfsConfiguration();
conf.setLong(DFSConfigKeys.DFS_BLOCK_SIZE_KEY, BLOCK_SIZE);
MiniDFSCluster cluster = null;
try {
cluster = new MiniDFSCluster.Builder(conf).numDataNodes(5).build();
cluster.waitActive();
// create a file
DistributedFileSystem dfs = (DistributedFileSystem) cluster.getFileSystem();
String filestr = "/foo";
Path filepath = new Path(filestr);
DFSTestUtil.createFile(dfs, filepath, ORG_FILE_SIZE, REPLICATION_NUM, 0L);
assertTrue(dfs.exists(filepath));
DFSTestUtil.waitReplication(dfs, filepath, REPLICATION_NUM);
// get block info for the last block
LocatedBlock locatedblock =
TestInterDatanodeProtocol.getLastLocatedBlock(dfs.dfs.getNamenode(), filestr);
DatanodeInfo[] datanodeinfos = locatedblock.getLocations();
assertEquals(REPLICATION_NUM, datanodeinfos.length);
// connect to data nodes
DataNode[] datanodes = new DataNode[REPLICATION_NUM];
for (int i = 0; i < REPLICATION_NUM; i++) {
datanodes[i] = cluster.getDataNode(datanodeinfos[i].getIpcPort());
assertTrue(datanodes[i] != null);
}
// verify Block Info
ExtendedBlock lastblock = locatedblock.getBlock();
DataNode.LOG.info("newblocks=" + lastblock);
for (int i = 0; i < REPLICATION_NUM; i++) {
checkMetaInfo(lastblock, datanodes[i]);
}
DataNode.LOG.info("dfs.dfs.clientName=" + dfs.dfs.clientName);
cluster.getNameNodeRpc().append(filestr, dfs.dfs.clientName);
// expire lease to trigger block recovery.
waitLeaseRecovery(cluster);
Block[] updatedmetainfo = new Block[REPLICATION_NUM];
long oldSize = lastblock.getNumBytes();
lastblock =
TestInterDatanodeProtocol.getLastLocatedBlock(dfs.dfs.getNamenode(), filestr).getBlock();
long currentGS = lastblock.getGenerationStamp();
for (int i = 0; i < REPLICATION_NUM; i++) {
updatedmetainfo[i] =
DataNodeTestUtils.getFSDataset(datanodes[i])
.getStoredBlock(lastblock.getBlockPoolId(), lastblock.getBlockId());
assertEquals(lastblock.getBlockId(), updatedmetainfo[i].getBlockId());
assertEquals(oldSize, updatedmetainfo[i].getNumBytes());
assertEquals(currentGS, updatedmetainfo[i].getGenerationStamp());
}
// verify that lease recovery does not occur when namenode is in safemode
System.out.println("Testing that lease recovery cannot happen during safemode.");
filestr = "/foo.safemode";
filepath = new Path(filestr);
dfs.create(filepath, (short) 1);
cluster.getNameNodeRpc().setSafeMode(HdfsConstants.SafeModeAction.SAFEMODE_ENTER);
assertTrue(dfs.dfs.exists(filestr));
DFSTestUtil.waitReplication(dfs, filepath, (short) 1);
waitLeaseRecovery(cluster);
// verify that we still cannot recover the lease
LeaseManager lm = NameNodeAdapter.getLeaseManager(cluster.getNamesystem());
assertTrue("Found " + lm.countLease() + " lease, expected 1", lm.countLease() == 1);
cluster.getNameNodeRpc().setSafeMode(HdfsConstants.SafeModeAction.SAFEMODE_LEAVE);
} finally {
if (cluster != null) {
cluster.shutdown();
}
}
}
/*
* XXX (ab) Bulk of this method is copied verbatim from {@link DFSClient}, which is
* bad. Both places should be refactored to provide a method to copy blocks
* around.
*/
private void copyBlock(DFSClient dfs, LocatedBlock lblock, OutputStream fos) throws Exception {
int failures = 0;
InetSocketAddress targetAddr = null;
TreeSet<DatanodeInfo> deadNodes = new TreeSet<DatanodeInfo>();
BlockReader blockReader = null;
ExtendedBlock block = lblock.getBlock();
while (blockReader == null) {
DatanodeInfo chosenNode;
try {
chosenNode = bestNode(dfs, lblock.getLocations(), deadNodes);
targetAddr = NetUtils.createSocketAddr(chosenNode.getXferAddr());
} catch (IOException ie) {
if (failures >= DFSConfigKeys.DFS_CLIENT_MAX_BLOCK_ACQUIRE_FAILURES_DEFAULT) {
throw new IOException("Could not obtain block " + lblock, ie);
}
LOG.info("Could not obtain block from any node: " + ie);
try {
Thread.sleep(10000);
} catch (InterruptedException iex) {
}
deadNodes.clear();
failures++;
continue;
}
try {
String file =
BlockReaderFactory.getFileName(targetAddr, block.getBlockPoolId(), block.getBlockId());
blockReader =
new BlockReaderFactory(dfs.getConf())
.setFileName(file)
.setBlock(block)
.setBlockToken(lblock.getBlockToken())
.setStartOffset(0)
.setLength(-1)
.setVerifyChecksum(true)
.setClientName("fsck")
.setDatanodeInfo(chosenNode)
.setInetSocketAddress(targetAddr)
.setCachingStrategy(CachingStrategy.newDropBehind())
.setClientCacheContext(dfs.getClientContext())
.setConfiguration(namenode.conf)
.setRemotePeerFactory(
new RemotePeerFactory() {
@Override
public Peer newConnectedPeer(InetSocketAddress addr) throws IOException {
Peer peer = null;
Socket s = NetUtils.getDefaultSocketFactory(conf).createSocket();
try {
s.connect(addr, HdfsServerConstants.READ_TIMEOUT);
s.setSoTimeout(HdfsServerConstants.READ_TIMEOUT);
peer =
TcpPeerServer.peerFromSocketAndKey(
s, namenode.getRpcServer().getDataEncryptionKey());
} finally {
if (peer == null) {
IOUtils.closeQuietly(s);
}
}
return peer;
}
})
.build();
} catch (IOException ex) {
// Put chosen node into dead list, continue
LOG.info("Failed to connect to " + targetAddr + ":" + ex);
deadNodes.add(chosenNode);
}
}
byte[] buf = new byte[1024];
int cnt = 0;
boolean success = true;
long bytesRead = 0;
try {
while ((cnt = blockReader.read(buf, 0, buf.length)) > 0) {
fos.write(buf, 0, cnt);
bytesRead += cnt;
}
if (bytesRead != block.getNumBytes()) {
throw new IOException(
"Recorded block size is "
+ block.getNumBytes()
+ ", but datanode returned "
+ bytesRead
+ " bytes");
}
} catch (Exception e) {
LOG.error("Error reading block", e);
success = false;
} finally {
blockReader.close();
}
if (!success) {
throw new Exception("Could not copy block data for " + lblock.getBlock());
}
}
/**
* Create a file, write something, fsync but not close. Then change lease period and wait for
* lease recovery. Finally, read the block directly from each Datanode and verify the content.
*/
public void testLeaseExpireHardLimit() throws Exception {
System.out.println("testLeaseExpireHardLimit start");
final long leasePeriod = 1000;
final int DATANODE_NUM = 3;
Configuration conf = new Configuration();
conf.setInt("heartbeat.recheck.interval", 1000);
conf.setInt("dfs.heartbeat.interval", 1);
// create cluster
MiniDFSCluster cluster = new MiniDFSCluster(conf, DATANODE_NUM, true, null);
DistributedFileSystem dfs = null;
try {
cluster.waitActive();
dfs = (DistributedFileSystem) cluster.getFileSystem();
// create a new file.
final String f = DIR + "foo";
final Path fpath = new Path(f);
FSDataOutputStream out = TestFileCreation.createFile(dfs, fpath, DATANODE_NUM);
out.write("something".getBytes());
out.sync();
int actualRepl =
((DFSClient.DFSOutputStream) (out.getWrappedStream())).getNumCurrentReplicas();
assertTrue(
f + " should be replicated to " + DATANODE_NUM + " datanodes.",
actualRepl == DATANODE_NUM);
// set the soft and hard limit to be 1 second so that the
// namenode triggers lease recovery
cluster.setLeasePeriod(leasePeriod, leasePeriod);
// wait for the lease to expire
try {
Thread.sleep(5 * leasePeriod);
} catch (InterruptedException e) {
}
LocatedBlocks locations = dfs.dfs.namenode.getBlockLocations(f, 0, Long.MAX_VALUE);
assertEquals(1, locations.locatedBlockCount());
LocatedBlock locatedblock = locations.getLocatedBlocks().get(0);
int successcount = 0;
for (DatanodeInfo datanodeinfo : locatedblock.getLocations()) {
DataNode datanode = cluster.getDataNode(datanodeinfo.ipcPort);
FSDataset dataset = (FSDataset) datanode.data;
Block b = dataset.getStoredBlock(locatedblock.getBlock().getBlockId());
File blockfile = dataset.findBlockFile(b.getBlockId());
System.out.println("blockfile=" + blockfile);
if (blockfile != null) {
BufferedReader in = new BufferedReader(new FileReader(blockfile));
assertEquals("something", in.readLine());
in.close();
successcount++;
}
}
System.out.println("successcount=" + successcount);
assertTrue(successcount > 0);
} finally {
IOUtils.closeStream(dfs);
cluster.shutdown();
}
System.out.println("testLeaseExpireHardLimit successful");
}
/** Test that the filesystem removes the last block from a file if its lease expires. */
public void testFileCreationError2() throws IOException {
long leasePeriod = 1000;
System.out.println("testFileCreationError2 start");
Configuration conf = new Configuration();
conf.setInt("heartbeat.recheck.interval", 1000);
conf.setInt("dfs.heartbeat.interval", 1);
if (simulatedStorage) {
conf.setBoolean(SimulatedFSDataset.CONFIG_PROPERTY_SIMULATED, true);
}
// create cluster
MiniDFSCluster cluster = new MiniDFSCluster(conf, 1, true, null);
DistributedFileSystem dfs = null;
try {
cluster.waitActive();
dfs = (DistributedFileSystem) cluster.getFileSystem();
DFSClient client = dfs.dfs;
// create a new file.
//
Path file1 = new Path("/filestatus.dat");
createFile(dfs, file1, 1);
System.out.println(
"testFileCreationError2: " + "Created file filestatus.dat with one replicas.");
LocatedBlocks locations =
client.namenode.getBlockLocations(file1.toString(), 0, Long.MAX_VALUE);
System.out.println(
"testFileCreationError2: "
+ "The file has "
+ locations.locatedBlockCount()
+ " blocks.");
// add another block to the file
LocatedBlock location = client.namenode.addBlock(file1.toString(), client.clientName);
System.out.println("testFileCreationError2: " + "Added block " + location.getBlock());
locations = client.namenode.getBlockLocations(file1.toString(), 0, Long.MAX_VALUE);
int count = locations.locatedBlockCount();
System.out.println("testFileCreationError2: " + "The file now has " + count + " blocks.");
// set the soft and hard limit to be 1 second so that the
// namenode triggers lease recovery
cluster.setLeasePeriod(leasePeriod, leasePeriod);
// wait for the lease to expire
try {
Thread.sleep(5 * leasePeriod);
} catch (InterruptedException e) {
}
// verify that the last block was synchronized.
locations = client.namenode.getBlockLocations(file1.toString(), 0, Long.MAX_VALUE);
System.out.println(
"testFileCreationError2: " + "locations = " + locations.locatedBlockCount());
assertEquals(0, locations.locatedBlockCount());
System.out.println("testFileCreationError2 successful");
} finally {
IOUtils.closeStream(dfs);
cluster.shutdown();
}
}
/** Retry addBlock() while another thread is in chooseTarget(). See HDFS-4452. */
@Test
public void testRetryAddBlockWhileInChooseTarget() throws Exception {
final String src = "/testRetryAddBlockWhileInChooseTarget";
FSNamesystem ns = cluster.getNamesystem();
BlockManager spyBM = spy(ns.getBlockManager());
final NamenodeProtocols nn = cluster.getNameNodeRpc();
// substitute mocked BlockManager into FSNamesystem
Class<? extends FSNamesystem> nsClass = ns.getClass();
Field bmField = nsClass.getDeclaredField("blockManager");
bmField.setAccessible(true);
bmField.set(ns, spyBM);
doAnswer(
new Answer<DatanodeStorageInfo[]>() {
@Override
public DatanodeStorageInfo[] answer(InvocationOnMock invocation) throws Throwable {
LOG.info("chooseTarget for " + src);
DatanodeStorageInfo[] ret = (DatanodeStorageInfo[]) invocation.callRealMethod();
count++;
if (count == 1) { // run second addBlock()
LOG.info("Starting second addBlock for " + src);
nn.addBlock(src, "clientName", null, null, INodeId.GRANDFATHER_INODE_ID, null);
LocatedBlocks lbs = nn.getBlockLocations(src, 0, Long.MAX_VALUE);
assertEquals("Must be one block", 1, lbs.getLocatedBlocks().size());
lb2 = lbs.get(0);
assertEquals("Wrong replication", REPLICATION, lb2.getLocations().length);
}
return ret;
}
})
.when(spyBM)
.chooseTarget4NewBlock(
Mockito.anyString(),
Mockito.anyInt(),
Mockito.<DatanodeDescriptor>any(),
Mockito.<HashSet<Node>>any(),
Mockito.anyLong(),
Mockito.<List<String>>any(),
Mockito.anyByte());
// create file
nn.create(
src,
FsPermission.getFileDefault(),
"clientName",
new EnumSetWritable<CreateFlag>(EnumSet.of(CreateFlag.CREATE)),
true,
(short) 3,
1024,
null);
// start first addBlock()
LOG.info("Starting first addBlock for " + src);
nn.addBlock(src, "clientName", null, null, INodeId.GRANDFATHER_INODE_ID, null);
// check locations
LocatedBlocks lbs = nn.getBlockLocations(src, 0, Long.MAX_VALUE);
assertEquals("Must be one block", 1, lbs.getLocatedBlocks().size());
lb1 = lbs.get(0);
assertEquals("Wrong replication", REPLICATION, lb1.getLocations().length);
assertEquals("Blocks are not equal", lb1.getBlock(), lb2.getBlock());
}
/**
* Test that when there is a failure replicating a block the temporary and meta files are cleaned
* up and subsequent replication succeeds.
*/
@Test
public void testReplicationError() throws Exception {
// create a file of replication factor of 1
final Path fileName = new Path("/test.txt");
final int fileLen = 1;
DFSTestUtil.createFile(fs, fileName, 1, (short) 1, 1L);
DFSTestUtil.waitReplication(fs, fileName, (short) 1);
// get the block belonged to the created file
LocatedBlocks blocks =
NameNodeAdapter.getBlockLocations(
cluster.getNameNode(), fileName.toString(), 0, (long) fileLen);
assertEquals("Should only find 1 block", blocks.locatedBlockCount(), 1);
LocatedBlock block = blocks.get(0);
// bring up a second datanode
cluster.startDataNodes(conf, 1, true, null, null);
cluster.waitActive();
final int sndNode = 1;
DataNode datanode = cluster.getDataNodes().get(sndNode);
// replicate the block to the second datanode
InetSocketAddress target = datanode.getXferAddress();
Socket s = new Socket(target.getAddress(), target.getPort());
// write the header.
DataOutputStream out = new DataOutputStream(s.getOutputStream());
DataChecksum checksum = DataChecksum.newDataChecksum(DataChecksum.Type.CRC32, 512);
new Sender(out)
.writeBlock(
block.getBlock(),
StorageType.DEFAULT,
BlockTokenSecretManager.DUMMY_TOKEN,
"",
new DatanodeInfo[0],
new StorageType[0],
null,
BlockConstructionStage.PIPELINE_SETUP_CREATE,
1,
0L,
0L,
0L,
checksum,
CachingStrategy.newDefaultStrategy(),
false);
out.flush();
// close the connection before sending the content of the block
out.close();
// the temporary block & meta files should be deleted
String bpid = cluster.getNamesystem().getBlockPoolId();
File storageDir = cluster.getInstanceStorageDir(sndNode, 0);
File dir1 = MiniDFSCluster.getRbwDir(storageDir, bpid);
storageDir = cluster.getInstanceStorageDir(sndNode, 1);
File dir2 = MiniDFSCluster.getRbwDir(storageDir, bpid);
while (dir1.listFiles().length != 0 || dir2.listFiles().length != 0) {
Thread.sleep(100);
}
// then increase the file's replication factor
fs.setReplication(fileName, (short) 2);
// replication should succeed
DFSTestUtil.waitReplication(fs, fileName, (short) 1);
// clean up the file
fs.delete(fileName, false);
}
protected void doTestRead(Configuration conf, MiniDFSCluster cluster, boolean isStriped)
throws Exception {
final int numDataNodes = cluster.getDataNodes().size();
final NameNode nn = cluster.getNameNode();
final NamenodeProtocols nnProto = nn.getRpcServer();
final BlockManager bm = nn.getNamesystem().getBlockManager();
final BlockTokenSecretManager sm = bm.getBlockTokenSecretManager();
// set a short token lifetime (1 second) initially
SecurityTestUtil.setBlockTokenLifetime(sm, 1000L);
Path fileToRead = new Path(FILE_TO_READ);
FileSystem fs = cluster.getFileSystem();
byte[] expected = generateBytes(FILE_SIZE);
createFile(fs, fileToRead, expected);
/*
* setup for testing expiration handling of cached tokens
*/
// read using blockSeekTo(). Acquired tokens are cached in in1
FSDataInputStream in1 = fs.open(fileToRead);
assertTrue(checkFile1(in1, expected));
// read using blockSeekTo(). Acquired tokens are cached in in2
FSDataInputStream in2 = fs.open(fileToRead);
assertTrue(checkFile1(in2, expected));
// read using fetchBlockByteRange(). Acquired tokens are cached in in3
FSDataInputStream in3 = fs.open(fileToRead);
assertTrue(checkFile2(in3, expected));
/*
* testing READ interface on DN using a BlockReader
*/
DFSClient client = null;
try {
client = new DFSClient(new InetSocketAddress("localhost", cluster.getNameNodePort()), conf);
} finally {
if (client != null) client.close();
}
List<LocatedBlock> locatedBlocks =
nnProto.getBlockLocations(FILE_TO_READ, 0, FILE_SIZE).getLocatedBlocks();
LocatedBlock lblock = locatedBlocks.get(0); // first block
// verify token is not expired
assertFalse(isBlockTokenExpired(lblock));
// read with valid token, should succeed
tryRead(conf, lblock, true);
/*
* wait till myToken and all cached tokens in in1, in2 and in3 expire
*/
while (!isBlockTokenExpired(lblock)) {
try {
Thread.sleep(10);
} catch (InterruptedException ignored) {
}
}
/*
* continue testing READ interface on DN using a BlockReader
*/
// verify token is expired
assertTrue(isBlockTokenExpired(lblock));
// read should fail
tryRead(conf, lblock, false);
// use a valid new token
bm.setBlockToken(lblock, BlockTokenIdentifier.AccessMode.READ);
// read should succeed
tryRead(conf, lblock, true);
// use a token with wrong blockID
long rightId = lblock.getBlock().getBlockId();
long wrongId = rightId + 1;
lblock.getBlock().setBlockId(wrongId);
bm.setBlockToken(lblock, BlockTokenIdentifier.AccessMode.READ);
lblock.getBlock().setBlockId(rightId);
// read should fail
tryRead(conf, lblock, false);
// use a token with wrong access modes
bm.setBlockToken(lblock, BlockTokenIdentifier.AccessMode.WRITE);
// read should fail
tryRead(conf, lblock, false);
// set a long token lifetime for future tokens
SecurityTestUtil.setBlockTokenLifetime(sm, 600 * 1000L);
/*
* testing that when cached tokens are expired, DFSClient will re-fetch
* tokens transparently for READ.
*/
// confirm all tokens cached in in1 are expired by now
List<LocatedBlock> lblocks = DFSTestUtil.getAllBlocks(in1);
for (LocatedBlock blk : lblocks) {
assertTrue(isBlockTokenExpired(blk));
}
// verify blockSeekTo() is able to re-fetch token transparently
in1.seek(0);
assertTrue(checkFile1(in1, expected));
// confirm all tokens cached in in2 are expired by now
List<LocatedBlock> lblocks2 = DFSTestUtil.getAllBlocks(in2);
for (LocatedBlock blk : lblocks2) {
assertTrue(isBlockTokenExpired(blk));
}
// verify blockSeekTo() is able to re-fetch token transparently (testing
// via another interface method)
if (isStriped) {
// striped block doesn't support seekToNewSource
in2.seek(0);
} else {
assertTrue(in2.seekToNewSource(0));
}
assertTrue(checkFile1(in2, expected));
// confirm all tokens cached in in3 are expired by now
List<LocatedBlock> lblocks3 = DFSTestUtil.getAllBlocks(in3);
for (LocatedBlock blk : lblocks3) {
assertTrue(isBlockTokenExpired(blk));
}
// verify fetchBlockByteRange() is able to re-fetch token transparently
assertTrue(checkFile2(in3, expected));
/*
* testing that after datanodes are restarted on the same ports, cached
* tokens should still work and there is no need to fetch new tokens from
* namenode. This test should run while namenode is down (to make sure no
* new tokens can be fetched from namenode).
*/
// restart datanodes on the same ports that they currently use
assertTrue(cluster.restartDataNodes(true));
cluster.waitActive();
assertEquals(numDataNodes, cluster.getDataNodes().size());
cluster.shutdownNameNode(0);
// confirm tokens cached in in1 are still valid
lblocks = DFSTestUtil.getAllBlocks(in1);
for (LocatedBlock blk : lblocks) {
assertFalse(isBlockTokenExpired(blk));
}
// verify blockSeekTo() still works (forced to use cached tokens)
in1.seek(0);
assertTrue(checkFile1(in1, expected));
// confirm tokens cached in in2 are still valid
lblocks2 = DFSTestUtil.getAllBlocks(in2);
for (LocatedBlock blk : lblocks2) {
assertFalse(isBlockTokenExpired(blk));
}
// verify blockSeekTo() still works (forced to use cached tokens)
if (isStriped) {
in2.seek(0);
} else {
in2.seekToNewSource(0);
}
assertTrue(checkFile1(in2, expected));
// confirm tokens cached in in3 are still valid
lblocks3 = DFSTestUtil.getAllBlocks(in3);
for (LocatedBlock blk : lblocks3) {
assertFalse(isBlockTokenExpired(blk));
}
// verify fetchBlockByteRange() still works (forced to use cached tokens)
assertTrue(checkFile2(in3, expected));
/*
* testing that when namenode is restarted, cached tokens should still
* work and there is no need to fetch new tokens from namenode. Like the
* previous test, this test should also run while namenode is down. The
* setup for this test depends on the previous test.
*/
// restart the namenode and then shut it down for test
cluster.restartNameNode(0);
cluster.shutdownNameNode(0);
// verify blockSeekTo() still works (forced to use cached tokens)
in1.seek(0);
assertTrue(checkFile1(in1, expected));
// verify again blockSeekTo() still works (forced to use cached tokens)
if (isStriped) {
in2.seek(0);
} else {
in2.seekToNewSource(0);
}
assertTrue(checkFile1(in2, expected));
// verify fetchBlockByteRange() still works (forced to use cached tokens)
assertTrue(checkFile2(in3, expected));
/*
* testing that after both namenode and datanodes got restarted (namenode
* first, followed by datanodes), DFSClient can't access DN without
* re-fetching tokens and is able to re-fetch tokens transparently. The
* setup of this test depends on the previous test.
*/
// restore the cluster and restart the datanodes for test
cluster.restartNameNode(0);
assertTrue(cluster.restartDataNodes(true));
cluster.waitActive();
assertEquals(numDataNodes, cluster.getDataNodes().size());
// shutdown namenode so that DFSClient can't get new tokens from namenode
cluster.shutdownNameNode(0);
// verify blockSeekTo() fails (cached tokens become invalid)
in1.seek(0);
assertFalse(checkFile1(in1, expected));
// verify fetchBlockByteRange() fails (cached tokens become invalid)
assertFalse(checkFile2(in3, expected));
// restart the namenode to allow DFSClient to re-fetch tokens
cluster.restartNameNode(0);
// verify blockSeekTo() works again (by transparently re-fetching
// tokens from namenode)
in1.seek(0);
assertTrue(checkFile1(in1, expected));
if (isStriped) {
in2.seek(0);
} else {
in2.seekToNewSource(0);
}
assertTrue(checkFile1(in2, expected));
// verify fetchBlockByteRange() works again (by transparently
// re-fetching tokens from namenode)
assertTrue(checkFile2(in3, expected));
/*
* testing that when datanodes are restarted on different ports, DFSClient
* is able to re-fetch tokens transparently to connect to them
*/
// restart datanodes on newly assigned ports
assertTrue(cluster.restartDataNodes(false));
cluster.waitActive();
assertEquals(numDataNodes, cluster.getDataNodes().size());
// verify blockSeekTo() is able to re-fetch token transparently
in1.seek(0);
assertTrue(checkFile1(in1, expected));
// verify blockSeekTo() is able to re-fetch token transparently
if (isStriped) {
in2.seek(0);
} else {
in2.seekToNewSource(0);
}
assertTrue(checkFile1(in2, expected));
// verify fetchBlockByteRange() is able to re-fetch token transparently
assertTrue(checkFile2(in3, expected));
}