Java Code Examples for org.apache.hadoop.hdfs.HAUtil#setAllowStandbyReads()
The following examples show how to use
org.apache.hadoop.hdfs.HAUtil#setAllowStandbyReads() .
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Example 1
| Source File: TestInitializeSharedEdits.java From hadoop with Apache License 2.0 | 6 votes |
|
@Before
public void setupCluster() throws IOException {
conf = new Configuration();
conf.setInt(DFSConfigKeys.DFS_HA_LOGROLL_PERIOD_KEY, 1);
conf.setInt(DFSConfigKeys.DFS_HA_TAILEDITS_PERIOD_KEY, 1);
HAUtil.setAllowStandbyReads(conf, true);
MiniDFSNNTopology topology = MiniDFSNNTopology.simpleHATopology();
cluster = new MiniDFSCluster.Builder(conf)
.nnTopology(topology)
.numDataNodes(0)
.build();
cluster.waitActive();
shutdownClusterAndRemoveSharedEditsDir();
}
Example 2
| Source File: TestQuotasWithHA.java From big-c with Apache License 2.0 | 6 votes |
|
@Before
public void setupCluster() throws Exception {
Configuration conf = new Configuration();
conf.setInt(DFSConfigKeys.DFS_HEARTBEAT_INTERVAL_KEY, 1);
conf.setInt(DFSConfigKeys.DFS_HA_TAILEDITS_PERIOD_KEY, 1);
conf.setLong(DFSConfigKeys.DFS_BLOCK_SIZE_KEY, BLOCK_SIZE);
HAUtil.setAllowStandbyReads(conf, true);
cluster = new MiniDFSCluster.Builder(conf)
.nnTopology(MiniDFSNNTopology.simpleHATopology())
.numDataNodes(1)
.waitSafeMode(false)
.build();
cluster.waitActive();
nn0 = cluster.getNameNode(0);
nn1 = cluster.getNameNode(1);
fs = HATestUtil.configureFailoverFs(cluster, conf);
cluster.transitionToActive(0);
}
Example 3
| Source File: TestQuotasWithHA.java From hadoop with Apache License 2.0 | 6 votes |
|
@Before
public void setupCluster() throws Exception {
Configuration conf = new Configuration();
conf.setInt(DFSConfigKeys.DFS_HEARTBEAT_INTERVAL_KEY, 1);
conf.setInt(DFSConfigKeys.DFS_HA_TAILEDITS_PERIOD_KEY, 1);
conf.setLong(DFSConfigKeys.DFS_BLOCK_SIZE_KEY, BLOCK_SIZE);
HAUtil.setAllowStandbyReads(conf, true);
cluster = new MiniDFSCluster.Builder(conf)
.nnTopology(MiniDFSNNTopology.simpleHATopology())
.numDataNodes(1)
.waitSafeMode(false)
.build();
cluster.waitActive();
nn0 = cluster.getNameNode(0);
nn1 = cluster.getNameNode(1);
fs = HATestUtil.configureFailoverFs(cluster, conf);
cluster.transitionToActive(0);
}
Example 4
| Source File: TestInitializeSharedEdits.java From big-c with Apache License 2.0 | 6 votes |
|
@Before
public void setupCluster() throws IOException {
conf = new Configuration();
conf.setInt(DFSConfigKeys.DFS_HA_LOGROLL_PERIOD_KEY, 1);
conf.setInt(DFSConfigKeys.DFS_HA_TAILEDITS_PERIOD_KEY, 1);
HAUtil.setAllowStandbyReads(conf, true);
MiniDFSNNTopology topology = MiniDFSNNTopology.simpleHATopology();
cluster = new MiniDFSCluster.Builder(conf)
.nnTopology(topology)
.numDataNodes(0)
.build();
cluster.waitActive();
shutdownClusterAndRemoveSharedEditsDir();
}
Example 5
| Source File: TestXAttrsWithHA.java From big-c with Apache License 2.0 | 6 votes |
|
@Before
public void setupCluster() throws Exception {
Configuration conf = new Configuration();
conf.setInt(DFSConfigKeys.DFS_HA_TAILEDITS_PERIOD_KEY, 1);
HAUtil.setAllowStandbyReads(conf, true);
cluster = new MiniDFSCluster.Builder(conf)
.nnTopology(MiniDFSNNTopology.simpleHATopology())
.numDataNodes(1)
.waitSafeMode(false)
.build();
cluster.waitActive();
nn0 = cluster.getNameNode(0);
nn1 = cluster.getNameNode(1);
fs = HATestUtil.configureFailoverFs(cluster, conf);
cluster.transitionToActive(0);
}
Example 6
| Source File: TestFailureToReadEdits.java From hadoop with Apache License 2.0 | 5 votes |
|
@Before
public void setUpCluster() throws Exception {
conf = new Configuration();
conf.setInt(DFSConfigKeys.DFS_NAMENODE_CHECKPOINT_CHECK_PERIOD_KEY, 1);
conf.setInt(DFSConfigKeys.DFS_NAMENODE_CHECKPOINT_TXNS_KEY, 1);
conf.setInt(DFSConfigKeys.DFS_NAMENODE_NUM_CHECKPOINTS_RETAINED_KEY, 10);
conf.setInt(DFSConfigKeys.DFS_HA_TAILEDITS_PERIOD_KEY, 1);
HAUtil.setAllowStandbyReads(conf, true);
if (clusterType == TestType.SHARED_DIR_HA) {
MiniDFSNNTopology topology = MiniQJMHACluster.createDefaultTopology(10000);
cluster = new MiniDFSCluster.Builder(conf)
.nnTopology(topology)
.numDataNodes(0)
.checkExitOnShutdown(false)
.build();
} else {
Builder builder = new MiniQJMHACluster.Builder(conf);
builder.getDfsBuilder().numDataNodes(0).checkExitOnShutdown(false);
miniQjmHaCluster = builder.build();
cluster = miniQjmHaCluster.getDfsCluster();
}
cluster.waitActive();
nn0 = cluster.getNameNode(0);
nn1 = cluster.getNameNode(1);
cluster.transitionToActive(0);
fs = HATestUtil.configureFailoverFs(cluster, conf);
}
Example 7
| Source File: TestFailureToReadEdits.java From big-c with Apache License 2.0 | 5 votes |
|
@Before
public void setUpCluster() throws Exception {
conf = new Configuration();
conf.setInt(DFSConfigKeys.DFS_NAMENODE_CHECKPOINT_CHECK_PERIOD_KEY, 1);
conf.setInt(DFSConfigKeys.DFS_NAMENODE_CHECKPOINT_TXNS_KEY, 1);
conf.setInt(DFSConfigKeys.DFS_NAMENODE_NUM_CHECKPOINTS_RETAINED_KEY, 10);
conf.setInt(DFSConfigKeys.DFS_HA_TAILEDITS_PERIOD_KEY, 1);
HAUtil.setAllowStandbyReads(conf, true);
if (clusterType == TestType.SHARED_DIR_HA) {
MiniDFSNNTopology topology = MiniQJMHACluster.createDefaultTopology(10000);
cluster = new MiniDFSCluster.Builder(conf)
.nnTopology(topology)
.numDataNodes(0)
.checkExitOnShutdown(false)
.build();
} else {
Builder builder = new MiniQJMHACluster.Builder(conf);
builder.getDfsBuilder().numDataNodes(0).checkExitOnShutdown(false);
miniQjmHaCluster = builder.build();
cluster = miniQjmHaCluster.getDfsCluster();
}
cluster.waitActive();
nn0 = cluster.getNameNode(0);
nn1 = cluster.getNameNode(1);
cluster.transitionToActive(0);
fs = HATestUtil.configureFailoverFs(cluster, conf);
}
Example 8
| Source File: TestBookKeeperAsHASharedDir.java From hadoop with Apache License 2.0 | 4 votes |
|
/**
* Use NameNode INTIALIZESHAREDEDITS to initialize the shared edits. i.e. copy
* the edits log segments to new bkjm shared edits.
*
* @throws Exception
*/
@Test
public void testInitializeBKSharedEdits() throws Exception {
MiniDFSCluster cluster = null;
try {
Configuration conf = new Configuration();
HAUtil.setAllowStandbyReads(conf, true);
conf.setInt(DFSConfigKeys.DFS_HA_TAILEDITS_PERIOD_KEY, 1);
MiniDFSNNTopology topology = MiniDFSNNTopology.simpleHATopology();
cluster = new MiniDFSCluster.Builder(conf).nnTopology(topology)
.numDataNodes(0).build();
cluster.waitActive();
// Shutdown and clear the current filebased shared dir.
cluster.shutdownNameNodes();
File shareddir = new File(cluster.getSharedEditsDir(0, 1));
assertTrue("Initial Shared edits dir not fully deleted",
FileUtil.fullyDelete(shareddir));
// Check namenodes should not start without shared dir.
assertCanNotStartNamenode(cluster, 0);
assertCanNotStartNamenode(cluster, 1);
// Configure bkjm as new shared edits dir in both namenodes
Configuration nn1Conf = cluster.getConfiguration(0);
Configuration nn2Conf = cluster.getConfiguration(1);
nn1Conf.set(DFSConfigKeys.DFS_NAMENODE_SHARED_EDITS_DIR_KEY, BKJMUtil
.createJournalURI("/initializeSharedEdits").toString());
nn2Conf.set(DFSConfigKeys.DFS_NAMENODE_SHARED_EDITS_DIR_KEY, BKJMUtil
.createJournalURI("/initializeSharedEdits").toString());
BKJMUtil.addJournalManagerDefinition(nn1Conf);
BKJMUtil.addJournalManagerDefinition(nn2Conf);
// Initialize the BKJM shared edits.
assertFalse(NameNode.initializeSharedEdits(nn1Conf));
// NameNode should be able to start and should be in sync with BKJM as
// shared dir
assertCanStartHANameNodes(cluster, conf, "/testBKJMInitialize");
} finally {
if (cluster != null) {
cluster.shutdown();
}
}
}
Example 9
| Source File: TestStandbyBlockManagement.java From big-c with Apache License 2.0 | 4 votes |
|
@Test(timeout=60000)
public void testInvalidateBlock() throws Exception {
Configuration conf = new Configuration();
HAUtil.setAllowStandbyReads(conf, true);
conf.setInt(DFSConfigKeys.DFS_HA_TAILEDITS_PERIOD_KEY, 1);
MiniDFSCluster cluster = new MiniDFSCluster.Builder(conf)
.nnTopology(MiniDFSNNTopology.simpleHATopology())
.numDataNodes(3)
.build();
try {
cluster.waitActive();
cluster.transitionToActive(0);
NameNode nn1 = cluster.getNameNode(0);
NameNode nn2 = cluster.getNameNode(1);
FileSystem fs = HATestUtil.configureFailoverFs(cluster, conf);
Thread.sleep(1000);
LOG.info("==================================");
DFSTestUtil.writeFile(fs, TEST_FILE_PATH, TEST_FILE_DATA);
// Have to force an edit log roll so that the standby catches up
nn1.getRpcServer().rollEditLog();
LOG.info("==================================");
// delete the file
fs.delete(TEST_FILE_PATH, false);
BlockManagerTestUtil.computeAllPendingWork(
nn1.getNamesystem().getBlockManager());
nn1.getRpcServer().rollEditLog();
// standby nn doesn't need to invalidate blocks.
assertEquals(0,
nn2.getNamesystem().getBlockManager().getPendingDeletionBlocksCount());
cluster.triggerHeartbeats();
cluster.triggerBlockReports();
// standby nn doesn't need to invalidate blocks.
assertEquals(0,
nn2.getNamesystem().getBlockManager().getPendingDeletionBlocksCount());
} finally {
cluster.shutdown();
}
}
Example 10
| Source File: TestStandbyIsHot.java From big-c with Apache License 2.0 | 4 votes |
|
/**
* Regression test for HDFS-2795:
* - Start an HA cluster with a DN.
* - Write several blocks to the FS with replication 1.
* - Shutdown the DN
* - Wait for the NNs to declare the DN dead. All blocks will be under-replicated.
* - Restart the DN.
* In the bug, the standby node would only very slowly notice the blocks returning
* to the cluster.
*/
@Test(timeout=60000)
public void testDatanodeRestarts() throws Exception {
Configuration conf = new Configuration();
conf.setInt(DFSConfigKeys.DFS_BLOCK_SIZE_KEY, 1024);
// We read from the standby to watch block locations
HAUtil.setAllowStandbyReads(conf, true);
conf.setLong(DFSConfigKeys.DFS_NAMENODE_ACCESSTIME_PRECISION_KEY, 0);
conf.setInt(DFSConfigKeys.DFS_HA_TAILEDITS_PERIOD_KEY, 1);
MiniDFSCluster cluster = new MiniDFSCluster.Builder(conf)
.nnTopology(MiniDFSNNTopology.simpleHATopology())
.numDataNodes(1)
.build();
try {
NameNode nn0 = cluster.getNameNode(0);
NameNode nn1 = cluster.getNameNode(1);
cluster.transitionToActive(0);
// Create 5 blocks.
DFSTestUtil.createFile(cluster.getFileSystem(0),
TEST_FILE_PATH, 5*1024, (short)1, 1L);
HATestUtil.waitForStandbyToCatchUp(nn0, nn1);
// Stop the DN.
DataNode dn = cluster.getDataNodes().get(0);
String dnName = dn.getDatanodeId().getXferAddr();
DataNodeProperties dnProps = cluster.stopDataNode(0);
// Make sure both NNs register it as dead.
BlockManagerTestUtil.noticeDeadDatanode(nn0, dnName);
BlockManagerTestUtil.noticeDeadDatanode(nn1, dnName);
BlockManagerTestUtil.updateState(nn0.getNamesystem().getBlockManager());
BlockManagerTestUtil.updateState(nn1.getNamesystem().getBlockManager());
assertEquals(5, nn0.getNamesystem().getUnderReplicatedBlocks());
// The SBN will not have any blocks in its neededReplication queue
// since the SBN doesn't process replication.
assertEquals(0, nn1.getNamesystem().getUnderReplicatedBlocks());
LocatedBlocks locs = nn1.getRpcServer().getBlockLocations(
TEST_FILE, 0, 1);
assertEquals("Standby should have registered that the block has no replicas",
0, locs.get(0).getLocations().length);
cluster.restartDataNode(dnProps);
// Wait for both NNs to re-register the DN.
cluster.waitActive(0);
cluster.waitActive(1);
BlockManagerTestUtil.updateState(nn0.getNamesystem().getBlockManager());
BlockManagerTestUtil.updateState(nn1.getNamesystem().getBlockManager());
assertEquals(0, nn0.getNamesystem().getUnderReplicatedBlocks());
assertEquals(0, nn1.getNamesystem().getUnderReplicatedBlocks());
locs = nn1.getRpcServer().getBlockLocations(
TEST_FILE, 0, 1);
assertEquals("Standby should have registered that the block has replicas again",
1, locs.get(0).getLocations().length);
} finally {
cluster.shutdown();
}
}
Example 11
| Source File: TestStandbyIsHot.java From big-c with Apache License 2.0 | 4 votes |
|
@Test(timeout=60000)
public void testStandbyIsHot() throws Exception {
Configuration conf = new Configuration();
// We read from the standby to watch block locations
HAUtil.setAllowStandbyReads(conf, true);
conf.setInt(DFSConfigKeys.DFS_HA_TAILEDITS_PERIOD_KEY, 1);
MiniDFSCluster cluster = new MiniDFSCluster.Builder(conf)
.nnTopology(MiniDFSNNTopology.simpleHATopology())
.numDataNodes(3)
.build();
try {
cluster.waitActive();
cluster.transitionToActive(0);
NameNode nn1 = cluster.getNameNode(0);
NameNode nn2 = cluster.getNameNode(1);
FileSystem fs = HATestUtil.configureFailoverFs(cluster, conf);
Thread.sleep(1000);
System.err.println("==================================");
DFSTestUtil.writeFile(fs, TEST_FILE_PATH, TEST_FILE_DATA);
// Have to force an edit log roll so that the standby catches up
nn1.getRpcServer().rollEditLog();
System.err.println("==================================");
// Block locations should show up on standby.
LOG.info("Waiting for block locations to appear on standby node");
waitForBlockLocations(cluster, nn2, TEST_FILE, 3);
// Trigger immediate heartbeats and block reports so
// that the active "trusts" all of the DNs
cluster.triggerHeartbeats();
cluster.triggerBlockReports();
// Change replication
LOG.info("Changing replication to 1");
fs.setReplication(TEST_FILE_PATH, (short)1);
BlockManagerTestUtil.computeAllPendingWork(
nn1.getNamesystem().getBlockManager());
waitForBlockLocations(cluster, nn1, TEST_FILE, 1);
nn1.getRpcServer().rollEditLog();
LOG.info("Waiting for lowered replication to show up on standby");
waitForBlockLocations(cluster, nn2, TEST_FILE, 1);
// Change back to 3
LOG.info("Changing replication to 3");
fs.setReplication(TEST_FILE_PATH, (short)3);
BlockManagerTestUtil.computeAllPendingWork(
nn1.getNamesystem().getBlockManager());
nn1.getRpcServer().rollEditLog();
LOG.info("Waiting for higher replication to show up on standby");
waitForBlockLocations(cluster, nn2, TEST_FILE, 3);
} finally {
cluster.shutdown();
}
}
Example 12
| Source File: TestEditLogsDuringFailover.java From big-c with Apache License 2.0 | 4 votes |
|
@Test
public void testStartup() throws Exception {
Configuration conf = new Configuration();
HAUtil.setAllowStandbyReads(conf, true);
MiniDFSCluster cluster = new MiniDFSCluster.Builder(conf)
.nnTopology(MiniDFSNNTopology.simpleHATopology())
.numDataNodes(0)
.build();
try {
// During HA startup, both nodes should be in
// standby and we shouldn't have any edits files
// in any edits directory!
List<URI> allDirs = Lists.newArrayList();
allDirs.addAll(cluster.getNameDirs(0));
allDirs.addAll(cluster.getNameDirs(1));
allDirs.add(cluster.getSharedEditsDir(0, 1));
assertNoEditFiles(allDirs);
// Set the first NN to active, make sure it creates edits
// in its own dirs and the shared dir. The standby
// should still have no edits!
cluster.transitionToActive(0);
assertEditFiles(cluster.getNameDirs(0),
NNStorage.getInProgressEditsFileName(1));
assertEditFiles(
Collections.singletonList(cluster.getSharedEditsDir(0, 1)),
NNStorage.getInProgressEditsFileName(1));
assertNoEditFiles(cluster.getNameDirs(1));
cluster.getNameNode(0).getRpcServer().mkdirs("/test",
FsPermission.createImmutable((short)0755), true);
// Restarting the standby should not finalize any edits files
// in the shared directory when it starts up!
cluster.restartNameNode(1);
assertEditFiles(cluster.getNameDirs(0),
NNStorage.getInProgressEditsFileName(1));
assertEditFiles(
Collections.singletonList(cluster.getSharedEditsDir(0, 1)),
NNStorage.getInProgressEditsFileName(1));
assertNoEditFiles(cluster.getNameDirs(1));
// Additionally it should not have applied any in-progress logs
// at start-up -- otherwise, it would have read half-way into
// the current log segment, and on the next roll, it would have to
// either replay starting in the middle of the segment (not allowed)
// or double-replay the edits (incorrect).
assertNull(NameNodeAdapter.getFileInfo(cluster.getNameNode(1), "/test", true));
cluster.getNameNode(0).getRpcServer().mkdirs("/test2",
FsPermission.createImmutable((short)0755), true);
// If we restart NN0, it'll come back as standby, and we can
// transition NN1 to active and make sure it reads edits correctly at this point.
cluster.restartNameNode(0);
cluster.transitionToActive(1);
// NN1 should have both the edits that came before its restart, and the edits that
// came after its restart.
assertNotNull(NameNodeAdapter.getFileInfo(cluster.getNameNode(1), "/test", true));
assertNotNull(NameNodeAdapter.getFileInfo(cluster.getNameNode(1), "/test2", true));
} finally {
cluster.shutdown();
}
}
Example 13
| Source File: TestEditLogTailer.java From big-c with Apache License 2.0 | 4 votes |
|
@Test
public void testTailer() throws IOException, InterruptedException,
ServiceFailedException {
Configuration conf = new HdfsConfiguration();
conf.setInt(DFSConfigKeys.DFS_HA_TAILEDITS_PERIOD_KEY, 1);
HAUtil.setAllowStandbyReads(conf, true);
MiniDFSCluster cluster = new MiniDFSCluster.Builder(conf)
.nnTopology(MiniDFSNNTopology.simpleHATopology())
.numDataNodes(0)
.build();
cluster.waitActive();
cluster.transitionToActive(0);
NameNode nn1 = cluster.getNameNode(0);
NameNode nn2 = cluster.getNameNode(1);
try {
for (int i = 0; i < DIRS_TO_MAKE / 2; i++) {
NameNodeAdapter.mkdirs(nn1, getDirPath(i),
new PermissionStatus("test","test", new FsPermission((short)00755)),
true);
}
HATestUtil.waitForStandbyToCatchUp(nn1, nn2);
for (int i = 0; i < DIRS_TO_MAKE / 2; i++) {
assertTrue(NameNodeAdapter.getFileInfo(nn2,
getDirPath(i), false).isDir());
}
for (int i = DIRS_TO_MAKE / 2; i < DIRS_TO_MAKE; i++) {
NameNodeAdapter.mkdirs(nn1, getDirPath(i),
new PermissionStatus("test","test", new FsPermission((short)00755)),
true);
}
HATestUtil.waitForStandbyToCatchUp(nn1, nn2);
for (int i = DIRS_TO_MAKE / 2; i < DIRS_TO_MAKE; i++) {
assertTrue(NameNodeAdapter.getFileInfo(nn2,
getDirPath(i), false).isDir());
}
} finally {
cluster.shutdown();
}
}
Example 14
| Source File: TestBackupNode.java From big-c with Apache License 2.0 | 4 votes |
|
/**
* Ensure that the backupnode will tail edits from the NN
* and keep in sync, even while the NN rolls, checkpoints
* occur, etc.
*/
@Test
public void testBackupNodeTailsEdits() throws Exception {
Configuration conf = new HdfsConfiguration();
HAUtil.setAllowStandbyReads(conf, true);
MiniDFSCluster cluster = null;
FileSystem fileSys = null;
BackupNode backup = null;
try {
cluster = new MiniDFSCluster.Builder(conf)
.numDataNodes(0).build();
fileSys = cluster.getFileSystem();
backup = startBackupNode(conf, StartupOption.BACKUP, 1);
BackupImage bnImage = (BackupImage) backup.getFSImage();
testBNInSync(cluster, backup, 1);
// Force a roll -- BN should roll with NN.
NameNode nn = cluster.getNameNode();
NamenodeProtocols nnRpc = nn.getRpcServer();
nnRpc.rollEditLog();
assertEquals(bnImage.getEditLog().getCurSegmentTxId(),
nn.getFSImage().getEditLog().getCurSegmentTxId());
// BN should stay in sync after roll
testBNInSync(cluster, backup, 2);
long nnImageBefore =
nn.getFSImage().getStorage().getMostRecentCheckpointTxId();
// BN checkpoint
backup.doCheckpoint();
// NN should have received a new image
long nnImageAfter =
nn.getFSImage().getStorage().getMostRecentCheckpointTxId();
assertTrue("nn should have received new checkpoint. before: " +
nnImageBefore + " after: " + nnImageAfter,
nnImageAfter > nnImageBefore);
// BN should stay in sync after checkpoint
testBNInSync(cluster, backup, 3);
// Stop BN
StorageDirectory sd = bnImage.getStorage().getStorageDir(0);
backup.stop();
backup = null;
// When shutting down the BN, it shouldn't finalize logs that are
// still open on the NN
EditLogFile editsLog = FSImageTestUtil.findLatestEditsLog(sd);
assertEquals(editsLog.getFirstTxId(),
nn.getFSImage().getEditLog().getCurSegmentTxId());
assertTrue("Should not have finalized " + editsLog,
editsLog.isInProgress());
// do some edits
assertTrue(fileSys.mkdirs(new Path("/edit-while-bn-down")));
// start a new backup node
backup = startBackupNode(conf, StartupOption.BACKUP, 1);
testBNInSync(cluster, backup, 4);
assertNotNull(backup.getNamesystem().getFileInfo("/edit-while-bn-down", false));
} finally {
LOG.info("Shutting down...");
if (backup != null) backup.stop();
if (fileSys != null) fileSys.close();
if (cluster != null) cluster.shutdown();
}
assertStorageDirsMatch(cluster.getNameNode(), backup);
}
Example 15
| Source File: TestBackupNode.java From hadoop with Apache License 2.0 | 4 votes |
|
/**
* Ensure that the backupnode will tail edits from the NN
* and keep in sync, even while the NN rolls, checkpoints
* occur, etc.
*/
@Test
public void testBackupNodeTailsEdits() throws Exception {
Configuration conf = new HdfsConfiguration();
HAUtil.setAllowStandbyReads(conf, true);
MiniDFSCluster cluster = null;
FileSystem fileSys = null;
BackupNode backup = null;
try {
cluster = new MiniDFSCluster.Builder(conf)
.numDataNodes(0).build();
fileSys = cluster.getFileSystem();
backup = startBackupNode(conf, StartupOption.BACKUP, 1);
BackupImage bnImage = (BackupImage) backup.getFSImage();
testBNInSync(cluster, backup, 1);
// Force a roll -- BN should roll with NN.
NameNode nn = cluster.getNameNode();
NamenodeProtocols nnRpc = nn.getRpcServer();
nnRpc.rollEditLog();
assertEquals(bnImage.getEditLog().getCurSegmentTxId(),
nn.getFSImage().getEditLog().getCurSegmentTxId());
// BN should stay in sync after roll
testBNInSync(cluster, backup, 2);
long nnImageBefore =
nn.getFSImage().getStorage().getMostRecentCheckpointTxId();
// BN checkpoint
backup.doCheckpoint();
// NN should have received a new image
long nnImageAfter =
nn.getFSImage().getStorage().getMostRecentCheckpointTxId();
assertTrue("nn should have received new checkpoint. before: " +
nnImageBefore + " after: " + nnImageAfter,
nnImageAfter > nnImageBefore);
// BN should stay in sync after checkpoint
testBNInSync(cluster, backup, 3);
// Stop BN
StorageDirectory sd = bnImage.getStorage().getStorageDir(0);
backup.stop();
backup = null;
// When shutting down the BN, it shouldn't finalize logs that are
// still open on the NN
EditLogFile editsLog = FSImageTestUtil.findLatestEditsLog(sd);
assertEquals(editsLog.getFirstTxId(),
nn.getFSImage().getEditLog().getCurSegmentTxId());
assertTrue("Should not have finalized " + editsLog,
editsLog.isInProgress());
// do some edits
assertTrue(fileSys.mkdirs(new Path("/edit-while-bn-down")));
// start a new backup node
backup = startBackupNode(conf, StartupOption.BACKUP, 1);
testBNInSync(cluster, backup, 4);
assertNotNull(backup.getNamesystem().getFileInfo("/edit-while-bn-down", false));
} finally {
LOG.info("Shutting down...");
if (backup != null) backup.stop();
if (fileSys != null) fileSys.close();
if (cluster != null) cluster.shutdown();
}
assertStorageDirsMatch(cluster.getNameNode(), backup);
}
Example 16
| Source File: TestStandbyBlockManagement.java From hadoop with Apache License 2.0 | 4 votes |
|
@Test(timeout=60000)
public void testInvalidateBlock() throws Exception {
Configuration conf = new Configuration();
HAUtil.setAllowStandbyReads(conf, true);
conf.setInt(DFSConfigKeys.DFS_HA_TAILEDITS_PERIOD_KEY, 1);
MiniDFSCluster cluster = new MiniDFSCluster.Builder(conf)
.nnTopology(MiniDFSNNTopology.simpleHATopology())
.numDataNodes(3)
.build();
try {
cluster.waitActive();
cluster.transitionToActive(0);
NameNode nn1 = cluster.getNameNode(0);
NameNode nn2 = cluster.getNameNode(1);
FileSystem fs = HATestUtil.configureFailoverFs(cluster, conf);
Thread.sleep(1000);
LOG.info("==================================");
DFSTestUtil.writeFile(fs, TEST_FILE_PATH, TEST_FILE_DATA);
// Have to force an edit log roll so that the standby catches up
nn1.getRpcServer().rollEditLog();
LOG.info("==================================");
// delete the file
fs.delete(TEST_FILE_PATH, false);
BlockManagerTestUtil.computeAllPendingWork(
nn1.getNamesystem().getBlockManager());
nn1.getRpcServer().rollEditLog();
// standby nn doesn't need to invalidate blocks.
assertEquals(0,
nn2.getNamesystem().getBlockManager().getPendingDeletionBlocksCount());
cluster.triggerHeartbeats();
cluster.triggerBlockReports();
// standby nn doesn't need to invalidate blocks.
assertEquals(0,
nn2.getNamesystem().getBlockManager().getPendingDeletionBlocksCount());
} finally {
cluster.shutdown();
}
}
Example 17
| Source File: TestStandbyIsHot.java From hadoop with Apache License 2.0 | 4 votes |
|
/**
* Regression test for HDFS-2795:
* - Start an HA cluster with a DN.
* - Write several blocks to the FS with replication 1.
* - Shutdown the DN
* - Wait for the NNs to declare the DN dead. All blocks will be under-replicated.
* - Restart the DN.
* In the bug, the standby node would only very slowly notice the blocks returning
* to the cluster.
*/
@Test(timeout=60000)
public void testDatanodeRestarts() throws Exception {
Configuration conf = new Configuration();
conf.setInt(DFSConfigKeys.DFS_BLOCK_SIZE_KEY, 1024);
// We read from the standby to watch block locations
HAUtil.setAllowStandbyReads(conf, true);
conf.setLong(DFSConfigKeys.DFS_NAMENODE_ACCESSTIME_PRECISION_KEY, 0);
conf.setInt(DFSConfigKeys.DFS_HA_TAILEDITS_PERIOD_KEY, 1);
MiniDFSCluster cluster = new MiniDFSCluster.Builder(conf)
.nnTopology(MiniDFSNNTopology.simpleHATopology())
.numDataNodes(1)
.build();
try {
NameNode nn0 = cluster.getNameNode(0);
NameNode nn1 = cluster.getNameNode(1);
cluster.transitionToActive(0);
// Create 5 blocks.
DFSTestUtil.createFile(cluster.getFileSystem(0),
TEST_FILE_PATH, 5*1024, (short)1, 1L);
HATestUtil.waitForStandbyToCatchUp(nn0, nn1);
// Stop the DN.
DataNode dn = cluster.getDataNodes().get(0);
String dnName = dn.getDatanodeId().getXferAddr();
DataNodeProperties dnProps = cluster.stopDataNode(0);
// Make sure both NNs register it as dead.
BlockManagerTestUtil.noticeDeadDatanode(nn0, dnName);
BlockManagerTestUtil.noticeDeadDatanode(nn1, dnName);
BlockManagerTestUtil.updateState(nn0.getNamesystem().getBlockManager());
BlockManagerTestUtil.updateState(nn1.getNamesystem().getBlockManager());
assertEquals(5, nn0.getNamesystem().getUnderReplicatedBlocks());
// The SBN will not have any blocks in its neededReplication queue
// since the SBN doesn't process replication.
assertEquals(0, nn1.getNamesystem().getUnderReplicatedBlocks());
LocatedBlocks locs = nn1.getRpcServer().getBlockLocations(
TEST_FILE, 0, 1);
assertEquals("Standby should have registered that the block has no replicas",
0, locs.get(0).getLocations().length);
cluster.restartDataNode(dnProps);
// Wait for both NNs to re-register the DN.
cluster.waitActive(0);
cluster.waitActive(1);
BlockManagerTestUtil.updateState(nn0.getNamesystem().getBlockManager());
BlockManagerTestUtil.updateState(nn1.getNamesystem().getBlockManager());
assertEquals(0, nn0.getNamesystem().getUnderReplicatedBlocks());
assertEquals(0, nn1.getNamesystem().getUnderReplicatedBlocks());
locs = nn1.getRpcServer().getBlockLocations(
TEST_FILE, 0, 1);
assertEquals("Standby should have registered that the block has replicas again",
1, locs.get(0).getLocations().length);
} finally {
cluster.shutdown();
}
}
Example 18
| Source File: TestEditLogsDuringFailover.java From hadoop with Apache License 2.0 | 4 votes |
|
@Test
public void testStartup() throws Exception {
Configuration conf = new Configuration();
HAUtil.setAllowStandbyReads(conf, true);
MiniDFSCluster cluster = new MiniDFSCluster.Builder(conf)
.nnTopology(MiniDFSNNTopology.simpleHATopology())
.numDataNodes(0)
.build();
try {
// During HA startup, both nodes should be in
// standby and we shouldn't have any edits files
// in any edits directory!
List<URI> allDirs = Lists.newArrayList();
allDirs.addAll(cluster.getNameDirs(0));
allDirs.addAll(cluster.getNameDirs(1));
allDirs.add(cluster.getSharedEditsDir(0, 1));
assertNoEditFiles(allDirs);
// Set the first NN to active, make sure it creates edits
// in its own dirs and the shared dir. The standby
// should still have no edits!
cluster.transitionToActive(0);
assertEditFiles(cluster.getNameDirs(0),
NNStorage.getInProgressEditsFileName(1));
assertEditFiles(
Collections.singletonList(cluster.getSharedEditsDir(0, 1)),
NNStorage.getInProgressEditsFileName(1));
assertNoEditFiles(cluster.getNameDirs(1));
cluster.getNameNode(0).getRpcServer().mkdirs("/test",
FsPermission.createImmutable((short)0755), true);
// Restarting the standby should not finalize any edits files
// in the shared directory when it starts up!
cluster.restartNameNode(1);
assertEditFiles(cluster.getNameDirs(0),
NNStorage.getInProgressEditsFileName(1));
assertEditFiles(
Collections.singletonList(cluster.getSharedEditsDir(0, 1)),
NNStorage.getInProgressEditsFileName(1));
assertNoEditFiles(cluster.getNameDirs(1));
// Additionally it should not have applied any in-progress logs
// at start-up -- otherwise, it would have read half-way into
// the current log segment, and on the next roll, it would have to
// either replay starting in the middle of the segment (not allowed)
// or double-replay the edits (incorrect).
assertNull(NameNodeAdapter.getFileInfo(cluster.getNameNode(1), "/test", true));
cluster.getNameNode(0).getRpcServer().mkdirs("/test2",
FsPermission.createImmutable((short)0755), true);
// If we restart NN0, it'll come back as standby, and we can
// transition NN1 to active and make sure it reads edits correctly at this point.
cluster.restartNameNode(0);
cluster.transitionToActive(1);
// NN1 should have both the edits that came before its restart, and the edits that
// came after its restart.
assertNotNull(NameNodeAdapter.getFileInfo(cluster.getNameNode(1), "/test", true));
assertNotNull(NameNodeAdapter.getFileInfo(cluster.getNameNode(1), "/test2", true));
} finally {
cluster.shutdown();
}
}
Example 19
| Source File: TestEditLogTailer.java From hadoop with Apache License 2.0 | 4 votes |
|
@Test
public void testTailer() throws IOException, InterruptedException,
ServiceFailedException {
Configuration conf = new HdfsConfiguration();
conf.setInt(DFSConfigKeys.DFS_HA_TAILEDITS_PERIOD_KEY, 1);
HAUtil.setAllowStandbyReads(conf, true);
MiniDFSCluster cluster = new MiniDFSCluster.Builder(conf)
.nnTopology(MiniDFSNNTopology.simpleHATopology())
.numDataNodes(0)
.build();
cluster.waitActive();
cluster.transitionToActive(0);
NameNode nn1 = cluster.getNameNode(0);
NameNode nn2 = cluster.getNameNode(1);
try {
for (int i = 0; i < DIRS_TO_MAKE / 2; i++) {
NameNodeAdapter.mkdirs(nn1, getDirPath(i),
new PermissionStatus("test","test", new FsPermission((short)00755)),
true);
}
HATestUtil.waitForStandbyToCatchUp(nn1, nn2);
for (int i = 0; i < DIRS_TO_MAKE / 2; i++) {
assertTrue(NameNodeAdapter.getFileInfo(nn2,
getDirPath(i), false).isDir());
}
for (int i = DIRS_TO_MAKE / 2; i < DIRS_TO_MAKE; i++) {
NameNodeAdapter.mkdirs(nn1, getDirPath(i),
new PermissionStatus("test","test", new FsPermission((short)00755)),
true);
}
HATestUtil.waitForStandbyToCatchUp(nn1, nn2);
for (int i = DIRS_TO_MAKE / 2; i < DIRS_TO_MAKE; i++) {
assertTrue(NameNodeAdapter.getFileInfo(nn2,
getDirPath(i), false).isDir());
}
} finally {
cluster.shutdown();
}
}
Example 20
| Source File: TestBookKeeperAsHASharedDir.java From big-c with Apache License 2.0 | 4 votes |
|
/**
* Use NameNode INTIALIZESHAREDEDITS to initialize the shared edits. i.e. copy
* the edits log segments to new bkjm shared edits.
*
* @throws Exception
*/
@Test
public void testInitializeBKSharedEdits() throws Exception {
MiniDFSCluster cluster = null;
try {
Configuration conf = new Configuration();
HAUtil.setAllowStandbyReads(conf, true);
conf.setInt(DFSConfigKeys.DFS_HA_TAILEDITS_PERIOD_KEY, 1);
MiniDFSNNTopology topology = MiniDFSNNTopology.simpleHATopology();
cluster = new MiniDFSCluster.Builder(conf).nnTopology(topology)
.numDataNodes(0).build();
cluster.waitActive();
// Shutdown and clear the current filebased shared dir.
cluster.shutdownNameNodes();
File shareddir = new File(cluster.getSharedEditsDir(0, 1));
assertTrue("Initial Shared edits dir not fully deleted",
FileUtil.fullyDelete(shareddir));
// Check namenodes should not start without shared dir.
assertCanNotStartNamenode(cluster, 0);
assertCanNotStartNamenode(cluster, 1);
// Configure bkjm as new shared edits dir in both namenodes
Configuration nn1Conf = cluster.getConfiguration(0);
Configuration nn2Conf = cluster.getConfiguration(1);
nn1Conf.set(DFSConfigKeys.DFS_NAMENODE_SHARED_EDITS_DIR_KEY, BKJMUtil
.createJournalURI("/initializeSharedEdits").toString());
nn2Conf.set(DFSConfigKeys.DFS_NAMENODE_SHARED_EDITS_DIR_KEY, BKJMUtil
.createJournalURI("/initializeSharedEdits").toString());
BKJMUtil.addJournalManagerDefinition(nn1Conf);
BKJMUtil.addJournalManagerDefinition(nn2Conf);
// Initialize the BKJM shared edits.
assertFalse(NameNode.initializeSharedEdits(nn1Conf));
// NameNode should be able to start and should be in sync with BKJM as
// shared dir
assertCanStartHANameNodes(cluster, conf, "/testBKJMInitialize");
} finally {
if (cluster != null) {
cluster.shutdown();
}
}
}
