Java Code Examples for org.apache.hadoop.hdfs.DFSTestUtil#getAllBlocks()
The following examples show how to use
org.apache.hadoop.hdfs.DFSTestUtil#getAllBlocks() .
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Example 1
| Source File: TestSequentialBlockId.java From hadoop with Apache License 2.0 | 5 votes |
|
/**
* Test that block IDs are generated sequentially.
*
* @throws IOException
*/
@Test
public void testBlockIdGeneration() throws IOException {
Configuration conf = new HdfsConfiguration();
conf.setInt(DFSConfigKeys.DFS_REPLICATION_KEY, 1);
MiniDFSCluster cluster =
new MiniDFSCluster.Builder(conf).numDataNodes(1).build();
try {
cluster.waitActive();
FileSystem fs = cluster.getFileSystem();
// Create a file that is 10 blocks long.
Path path = new Path("testBlockIdGeneration.dat");
DFSTestUtil.createFile(
fs, path, IO_SIZE, BLOCK_SIZE * 10, BLOCK_SIZE, REPLICATION, SEED);
List<LocatedBlock> blocks = DFSTestUtil.getAllBlocks(fs, path);
LOG.info("Block0 id is " + blocks.get(0).getBlock().getBlockId());
long nextBlockExpectedId = blocks.get(0).getBlock().getBlockId() + 1;
// Ensure that the block IDs are sequentially increasing.
for (int i = 1; i < blocks.size(); ++i) {
long nextBlockId = blocks.get(i).getBlock().getBlockId();
LOG.info("Block" + i + " id is " + nextBlockId);
assertThat(nextBlockId, is(nextBlockExpectedId));
++nextBlockExpectedId;
}
} finally {
cluster.shutdown();
}
}
Example 2
| Source File: TestSequentialBlockId.java From big-c with Apache License 2.0 | 5 votes |
|
/**
* Test that block IDs are generated sequentially.
*
* @throws IOException
*/
@Test
public void testBlockIdGeneration() throws IOException {
Configuration conf = new HdfsConfiguration();
conf.setInt(DFSConfigKeys.DFS_REPLICATION_KEY, 1);
MiniDFSCluster cluster =
new MiniDFSCluster.Builder(conf).numDataNodes(1).build();
try {
cluster.waitActive();
FileSystem fs = cluster.getFileSystem();
// Create a file that is 10 blocks long.
Path path = new Path("testBlockIdGeneration.dat");
DFSTestUtil.createFile(
fs, path, IO_SIZE, BLOCK_SIZE * 10, BLOCK_SIZE, REPLICATION, SEED);
List<LocatedBlock> blocks = DFSTestUtil.getAllBlocks(fs, path);
LOG.info("Block0 id is " + blocks.get(0).getBlock().getBlockId());
long nextBlockExpectedId = blocks.get(0).getBlock().getBlockId() + 1;
// Ensure that the block IDs are sequentially increasing.
for (int i = 1; i < blocks.size(); ++i) {
long nextBlockId = blocks.get(i).getBlock().getBlockId();
LOG.info("Block" + i + " id is " + nextBlockId);
assertThat(nextBlockId, is(nextBlockExpectedId));
++nextBlockExpectedId;
}
} finally {
cluster.shutdown();
}
}
Example 3
| Source File: TestFsck.java From hadoop with Apache License 2.0 | 4 votes |
|
/**
* Test for blockIdCK
*/
@Test
public void testBlockIdCK() throws Exception {
final short REPL_FACTOR = 2;
short NUM_DN = 2;
final long blockSize = 512;
String [] racks = {"/rack1", "/rack2"};
String [] hosts = {"host1", "host2"};
Configuration conf = new Configuration();
conf.setLong(DFSConfigKeys.DFS_BLOCK_SIZE_KEY, blockSize);
conf.setInt(DFSConfigKeys.DFS_REPLICATION_KEY, 2);
MiniDFSCluster cluster = null;
DistributedFileSystem dfs = null;
cluster =
new MiniDFSCluster.Builder(conf).numDataNodes(NUM_DN).hosts(hosts)
.racks(racks).build();
assertNotNull("Failed Cluster Creation", cluster);
cluster.waitClusterUp();
dfs = cluster.getFileSystem();
assertNotNull("Failed to get FileSystem", dfs);
DFSTestUtil util = new DFSTestUtil.Builder().
setName(getClass().getSimpleName()).setNumFiles(1).build();
//create files
final String pathString = new String("/testfile");
final Path path = new Path(pathString);
util.createFile(dfs, path, 1024, REPL_FACTOR , 1000L);
util.waitReplication(dfs, path, REPL_FACTOR);
StringBuilder sb = new StringBuilder();
for (LocatedBlock lb: util.getAllBlocks(dfs, path)){
sb.append(lb.getBlock().getLocalBlock().getBlockName()+" ");
}
String[] bIds = sb.toString().split(" ");
//run fsck
try {
//illegal input test
String runFsckResult = runFsck(conf, 0, true, "/", "-blockId",
"not_a_block_id");
assertTrue(runFsckResult.contains("Incorrect blockId format:"));
//general test
runFsckResult = runFsck(conf, 0, true, "/", "-blockId", sb.toString());
assertTrue(runFsckResult.contains(bIds[0]));
assertTrue(runFsckResult.contains(bIds[1]));
assertTrue(runFsckResult.contains(
"Block replica on datanode/rack: host1/rack1 is HEALTHY"));
assertTrue(runFsckResult.contains(
"Block replica on datanode/rack: host2/rack2 is HEALTHY"));
} finally {
cluster.shutdown();
}
}
Example 4
| Source File: TestFsck.java From hadoop with Apache License 2.0 | 4 votes |
|
/**
* Test for blockIdCK with block corruption
*/
@Test
public void testBlockIdCKCorruption() throws Exception {
short NUM_DN = 1;
final long blockSize = 512;
Random random = new Random();
DFSClient dfsClient;
LocatedBlocks blocks;
ExtendedBlock block;
short repFactor = 1;
String [] racks = {"/rack1"};
String [] hosts = {"host1"};
Configuration conf = new Configuration();
conf.setLong(DFSConfigKeys.DFS_BLOCKREPORT_INTERVAL_MSEC_KEY, 1000);
// Set short retry timeouts so this test runs faster
conf.setInt(DFSConfigKeys.DFS_CLIENT_RETRY_WINDOW_BASE, 10);
conf.setLong(DFSConfigKeys.DFS_BLOCK_SIZE_KEY, blockSize);
conf.setInt(DFSConfigKeys.DFS_REPLICATION_KEY, 1);
MiniDFSCluster cluster = null;
DistributedFileSystem dfs = null;
try {
cluster =
new MiniDFSCluster.Builder(conf).numDataNodes(NUM_DN).hosts(hosts)
.racks(racks).build();
assertNotNull("Failed Cluster Creation", cluster);
cluster.waitClusterUp();
dfs = cluster.getFileSystem();
assertNotNull("Failed to get FileSystem", dfs);
DFSTestUtil util = new DFSTestUtil.Builder().
setName(getClass().getSimpleName()).setNumFiles(1).build();
//create files
final String pathString = new String("/testfile");
final Path path = new Path(pathString);
util.createFile(dfs, path, 1024, repFactor, 1000L);
util.waitReplication(dfs, path, repFactor);
StringBuilder sb = new StringBuilder();
for (LocatedBlock lb: util.getAllBlocks(dfs, path)){
sb.append(lb.getBlock().getLocalBlock().getBlockName()+" ");
}
String[] bIds = sb.toString().split(" ");
//make sure block is healthy before we corrupt it
String outStr = runFsck(conf, 0, true, "/", "-blockId", bIds[0]);
System.out.println(outStr);
assertTrue(outStr.contains(NamenodeFsck.HEALTHY_STATUS));
// corrupt replicas
block = DFSTestUtil.getFirstBlock(dfs, path);
File blockFile = cluster.getBlockFile(0, block);
if (blockFile != null && blockFile.exists()) {
RandomAccessFile raFile = new RandomAccessFile(blockFile, "rw");
FileChannel channel = raFile.getChannel();
String badString = "BADBAD";
int rand = random.nextInt((int) channel.size()/2);
raFile.seek(rand);
raFile.write(badString.getBytes());
raFile.close();
}
util.waitCorruptReplicas(dfs, cluster.getNamesystem(), path, block, 1);
outStr = runFsck(conf, 1, false, "/", "-blockId", block.getBlockName());
System.out.println(outStr);
assertTrue(outStr.contains(NamenodeFsck.CORRUPT_STATUS));
} finally {
if (cluster != null) {
cluster.shutdown();
}
}
}
Example 5
| Source File: TestSequentialBlockId.java From hadoop with Apache License 2.0 | 4 votes |
|
/**
* Test that collisions in the block ID space are handled gracefully.
*
* @throws IOException
*/
@Test
public void testTriggerBlockIdCollision() throws IOException {
Configuration conf = new HdfsConfiguration();
conf.setInt(DFSConfigKeys.DFS_REPLICATION_KEY, 1);
MiniDFSCluster cluster =
new MiniDFSCluster.Builder(conf).numDataNodes(1).build();
try {
cluster.waitActive();
FileSystem fs = cluster.getFileSystem();
FSNamesystem fsn = cluster.getNamesystem();
final int blockCount = 10;
// Create a file with a few blocks to rev up the global block ID
// counter.
Path path1 = new Path("testBlockIdCollisionDetection_file1.dat");
DFSTestUtil.createFile(
fs, path1, IO_SIZE, BLOCK_SIZE * blockCount,
BLOCK_SIZE, REPLICATION, SEED);
List<LocatedBlock> blocks1 = DFSTestUtil.getAllBlocks(fs, path1);
// Rewind the block ID counter in the name system object. This will result
// in block ID collisions when we try to allocate new blocks.
SequentialBlockIdGenerator blockIdGenerator = fsn.getBlockIdManager()
.getBlockIdGenerator();
blockIdGenerator.setCurrentValue(blockIdGenerator.getCurrentValue() - 5);
// Trigger collisions by creating a new file.
Path path2 = new Path("testBlockIdCollisionDetection_file2.dat");
DFSTestUtil.createFile(
fs, path2, IO_SIZE, BLOCK_SIZE * blockCount,
BLOCK_SIZE, REPLICATION, SEED);
List<LocatedBlock> blocks2 = DFSTestUtil.getAllBlocks(fs, path2);
assertThat(blocks2.size(), is(blockCount));
// Make sure that file2 block IDs start immediately after file1
assertThat(blocks2.get(0).getBlock().getBlockId(),
is(blocks1.get(9).getBlock().getBlockId() + 1));
} finally {
cluster.shutdown();
}
}
Example 6
| Source File: TestFsck.java From big-c with Apache License 2.0 | 4 votes |
|
/**
* Test for blockIdCK
*/
@Test
public void testBlockIdCK() throws Exception {
final short REPL_FACTOR = 2;
short NUM_DN = 2;
final long blockSize = 512;
String [] racks = {"/rack1", "/rack2"};
String [] hosts = {"host1", "host2"};
Configuration conf = new Configuration();
conf.setLong(DFSConfigKeys.DFS_BLOCK_SIZE_KEY, blockSize);
conf.setInt(DFSConfigKeys.DFS_REPLICATION_KEY, 2);
MiniDFSCluster cluster = null;
DistributedFileSystem dfs = null;
cluster =
new MiniDFSCluster.Builder(conf).numDataNodes(NUM_DN).hosts(hosts)
.racks(racks).build();
assertNotNull("Failed Cluster Creation", cluster);
cluster.waitClusterUp();
dfs = cluster.getFileSystem();
assertNotNull("Failed to get FileSystem", dfs);
DFSTestUtil util = new DFSTestUtil.Builder().
setName(getClass().getSimpleName()).setNumFiles(1).build();
//create files
final String pathString = new String("/testfile");
final Path path = new Path(pathString);
util.createFile(dfs, path, 1024, REPL_FACTOR , 1000L);
util.waitReplication(dfs, path, REPL_FACTOR);
StringBuilder sb = new StringBuilder();
for (LocatedBlock lb: util.getAllBlocks(dfs, path)){
sb.append(lb.getBlock().getLocalBlock().getBlockName()+" ");
}
String[] bIds = sb.toString().split(" ");
//run fsck
try {
//illegal input test
String runFsckResult = runFsck(conf, 0, true, "/", "-blockId",
"not_a_block_id");
assertTrue(runFsckResult.contains("Incorrect blockId format:"));
//general test
runFsckResult = runFsck(conf, 0, true, "/", "-blockId", sb.toString());
assertTrue(runFsckResult.contains(bIds[0]));
assertTrue(runFsckResult.contains(bIds[1]));
assertTrue(runFsckResult.contains(
"Block replica on datanode/rack: host1/rack1 is HEALTHY"));
assertTrue(runFsckResult.contains(
"Block replica on datanode/rack: host2/rack2 is HEALTHY"));
} finally {
cluster.shutdown();
}
}
Example 7
| Source File: TestFsck.java From big-c with Apache License 2.0 | 4 votes |
|
/**
* Test for blockIdCK with block corruption
*/
@Test
public void testBlockIdCKCorruption() throws Exception {
short NUM_DN = 1;
final long blockSize = 512;
Random random = new Random();
DFSClient dfsClient;
LocatedBlocks blocks;
ExtendedBlock block;
short repFactor = 1;
String [] racks = {"/rack1"};
String [] hosts = {"host1"};
Configuration conf = new Configuration();
conf.setLong(DFSConfigKeys.DFS_BLOCKREPORT_INTERVAL_MSEC_KEY, 1000);
// Set short retry timeouts so this test runs faster
conf.setInt(DFSConfigKeys.DFS_CLIENT_RETRY_WINDOW_BASE, 10);
conf.setLong(DFSConfigKeys.DFS_BLOCK_SIZE_KEY, blockSize);
conf.setInt(DFSConfigKeys.DFS_REPLICATION_KEY, 1);
MiniDFSCluster cluster = null;
DistributedFileSystem dfs = null;
try {
cluster =
new MiniDFSCluster.Builder(conf).numDataNodes(NUM_DN).hosts(hosts)
.racks(racks).build();
assertNotNull("Failed Cluster Creation", cluster);
cluster.waitClusterUp();
dfs = cluster.getFileSystem();
assertNotNull("Failed to get FileSystem", dfs);
DFSTestUtil util = new DFSTestUtil.Builder().
setName(getClass().getSimpleName()).setNumFiles(1).build();
//create files
final String pathString = new String("/testfile");
final Path path = new Path(pathString);
util.createFile(dfs, path, 1024, repFactor, 1000L);
util.waitReplication(dfs, path, repFactor);
StringBuilder sb = new StringBuilder();
for (LocatedBlock lb: util.getAllBlocks(dfs, path)){
sb.append(lb.getBlock().getLocalBlock().getBlockName()+" ");
}
String[] bIds = sb.toString().split(" ");
//make sure block is healthy before we corrupt it
String outStr = runFsck(conf, 0, true, "/", "-blockId", bIds[0]);
System.out.println(outStr);
assertTrue(outStr.contains(NamenodeFsck.HEALTHY_STATUS));
// corrupt replicas
block = DFSTestUtil.getFirstBlock(dfs, path);
File blockFile = cluster.getBlockFile(0, block);
if (blockFile != null && blockFile.exists()) {
RandomAccessFile raFile = new RandomAccessFile(blockFile, "rw");
FileChannel channel = raFile.getChannel();
String badString = "BADBAD";
int rand = random.nextInt((int) channel.size()/2);
raFile.seek(rand);
raFile.write(badString.getBytes());
raFile.close();
}
util.waitCorruptReplicas(dfs, cluster.getNamesystem(), path, block, 1);
outStr = runFsck(conf, 1, false, "/", "-blockId", block.getBlockName());
System.out.println(outStr);
assertTrue(outStr.contains(NamenodeFsck.CORRUPT_STATUS));
} finally {
if (cluster != null) {
cluster.shutdown();
}
}
}
Example 8
| Source File: TestSequentialBlockId.java From big-c with Apache License 2.0 | 4 votes |
|
/**
* Test that collisions in the block ID space are handled gracefully.
*
* @throws IOException
*/
@Test
public void testTriggerBlockIdCollision() throws IOException {
Configuration conf = new HdfsConfiguration();
conf.setInt(DFSConfigKeys.DFS_REPLICATION_KEY, 1);
MiniDFSCluster cluster =
new MiniDFSCluster.Builder(conf).numDataNodes(1).build();
try {
cluster.waitActive();
FileSystem fs = cluster.getFileSystem();
FSNamesystem fsn = cluster.getNamesystem();
final int blockCount = 10;
// Create a file with a few blocks to rev up the global block ID
// counter.
Path path1 = new Path("testBlockIdCollisionDetection_file1.dat");
DFSTestUtil.createFile(
fs, path1, IO_SIZE, BLOCK_SIZE * blockCount,
BLOCK_SIZE, REPLICATION, SEED);
List<LocatedBlock> blocks1 = DFSTestUtil.getAllBlocks(fs, path1);
// Rewind the block ID counter in the name system object. This will result
// in block ID collisions when we try to allocate new blocks.
SequentialBlockIdGenerator blockIdGenerator = fsn.getBlockIdManager()
.getBlockIdGenerator();
blockIdGenerator.setCurrentValue(blockIdGenerator.getCurrentValue() - 5);
// Trigger collisions by creating a new file.
Path path2 = new Path("testBlockIdCollisionDetection_file2.dat");
DFSTestUtil.createFile(
fs, path2, IO_SIZE, BLOCK_SIZE * blockCount,
BLOCK_SIZE, REPLICATION, SEED);
List<LocatedBlock> blocks2 = DFSTestUtil.getAllBlocks(fs, path2);
assertThat(blocks2.size(), is(blockCount));
// Make sure that file2 block IDs start immediately after file1
assertThat(blocks2.get(0).getBlock().getBlockId(),
is(blocks1.get(9).getBlock().getBlockId() + 1));
} finally {
cluster.shutdown();
}
}
