List of usage examples for org.apache.hadoop.fs BlockLocation getNames
public String[] getNames() throws IOException
From source file:ch.cern.db.hdfs.Main.java
License:GNU General Public License
private void printBlockMetadata(BlockLocation blockLocation, String[] dataDirs) throws IOException { System.out.println(" Offset: " + blockLocation.getOffset()); System.out.println(" Length: " + blockLocation.getLength()); String[] cachedHosts = blockLocation.getCachedHosts(); if (cachedHosts.length == 0) { System.out.println(" No cached hosts"); }//from w ww . j a v a 2s .co m System.out.println(" Replicas:"); VolumeId[] volumeIds = blockLocation instanceof BlockStorageLocation ? (((BlockStorageLocation) blockLocation).getVolumeIds()) : null; String[] hosts = blockLocation.getHosts(); String[] names = blockLocation.getNames(); String[] topologyPaths = blockLocation.getTopologyPaths(); for (int i = 0; i < topologyPaths.length; i++) { int diskId = volumeIds != null ? DistributedFileSystemMetadata.getDiskId(volumeIds[i]) : -1; System.out.println(" Replica (" + i + "):"); System.out.println(" Host: " + hosts[i]); if (diskId == -1) System.out.println(" DiskId: unknown"); else if (dataDirs != null && diskId < dataDirs.length) System.out.println(" Location: " + dataDirs[diskId] + " (DiskId: " + diskId + ")"); else System.out.println(" DiskId: " + diskId); System.out.println(" Name: " + names[i]); System.out.println(" TopologyPaths: " + topologyPaths[i]); } if (cachedHosts.length > 0) { System.out.println(" Cached hosts:"); for (String cachedHost : cachedHosts) { System.out.println(" Host: " + cachedHost); } } }
From source file:com.cloudera.GetBlockLocations.java
License:Apache License
public static void main(String[] args) throws Exception { final Configuration conf = new Configuration(); String url = getStringOrDie("get.block.locations.path"); final FileSystem fs = FileSystem.get(new URI(url), conf); if (!fs.exists(new Path(url))) { System.out.println("no file at " + url); System.exit(1);//w w w . j a v a 2 s . co m } BlockLocation locs[] = null; try { locs = fs.getFileBlockLocations(new Path(url), 0, Long.MAX_VALUE); } catch (IOException e) { System.out.println("Error calling getFileBlockLocations(" + url + ")\n"); e.printStackTrace(System.err); System.exit(1); } String prefix = ""; for (BlockLocation loc : locs) { System.out.println(prefix); System.out.println("{"); System.out.println(" hosts = " + Arrays.toString(loc.getHosts())); System.out.println(" cachedHosts = " + Arrays.toString(loc.getCachedHosts())); System.out.println(" names = " + Arrays.toString(loc.getNames())); System.out.println(" topologyPaths = " + Arrays.toString(loc.getTopologyPaths())); System.out.println(" offset = " + loc.getOffset()); System.out.println(" length = " + loc.getLength()); System.out.println(" corrupt = " + loc.isCorrupt()); System.out.println("}"); prefix = ","; } }
From source file:com.cloudera.impala.catalog.HdfsTable.java
License:Apache License
/** * Loads the file block metadata for the given collection of FileDescriptors. The * FileDescriptors are passed as a tree, where the first level is indexed by * filesystem, the second level is indexed by partition location, and the leaves are * the list of files that exist under each directory. *//*from w w w . j a va 2 s . c o m*/ private void loadBlockMd(Map<FsKey, Map<String, List<FileDescriptor>>> perFsFileDescs) throws RuntimeException { Preconditions.checkNotNull(perFsFileDescs); LOG.debug("load block md for " + name_); for (FsKey fsEntry : perFsFileDescs.keySet()) { FileSystem fs = fsEntry.filesystem; // Store all BlockLocations so they can be reused when loading the disk IDs. List<BlockLocation> blockLocations = Lists.newArrayList(); int numCachedBlocks = 0; Map<String, List<FileDescriptor>> partitionToFds = perFsFileDescs.get(fsEntry); Preconditions.checkNotNull(partitionToFds); // loop over all files and record their block metadata, minus volume ids for (String partitionDir : partitionToFds.keySet()) { Path partDirPath = new Path(partitionDir); for (FileDescriptor fileDescriptor : partitionToFds.get(partitionDir)) { Path p = new Path(partDirPath, fileDescriptor.getFileName()); try { FileStatus fileStatus = fs.getFileStatus(p); // fileDescriptors should not contain directories. Preconditions.checkArgument(!fileStatus.isDirectory()); BlockLocation[] locations = fs.getFileBlockLocations(fileStatus, 0, fileStatus.getLen()); Preconditions.checkNotNull(locations); blockLocations.addAll(Arrays.asList(locations)); // Loop over all blocks in the file. for (BlockLocation block : locations) { String[] blockHostPorts = block.getNames(); try { blockHostPorts = block.getNames(); } catch (IOException e) { // this shouldn't happen, getNames() doesn't throw anything String errorMsg = "BlockLocation.getNames() failed:\n" + e.getMessage(); LOG.error(errorMsg); throw new IllegalStateException(errorMsg); } // Now enumerate all replicas of the block, adding any unknown hosts to // hostIndex_ and the index for that host to replicaHostIdxs. List<Integer> replicaHostIdxs = new ArrayList<Integer>(blockHostPorts.length); for (int i = 0; i < blockHostPorts.length; ++i) { String[] ip_port = blockHostPorts[i].split(":"); Preconditions.checkState(ip_port.length == 2); TNetworkAddress network_address = new TNetworkAddress(ip_port[0], Integer.parseInt(ip_port[1])); replicaHostIdxs.add(hostIndex_.getIndex(network_address)); } fileDescriptor.addFileBlock( new FileBlock(block.getOffset(), block.getLength(), replicaHostIdxs)); } } catch (IOException e) { throw new RuntimeException( "couldn't determine block locations for path '" + p + "':\n" + e.getMessage(), e); } } } if (SUPPORTS_VOLUME_ID && fs instanceof DistributedFileSystem) { LOG.trace("loading disk ids for: " + getFullName() + ". nodes: " + getNumNodes() + ". file system: " + fsEntry); loadDiskIds((DistributedFileSystem) fs, blockLocations, partitionToFds); LOG.trace("completed load of disk ids for: " + getFullName()); } } }
From source file:com.cloudera.impala.catalog.TestLoadHdfsMetadataPerf.java
License:Apache License
/** * List file status by calling fileSystem.listStatus. *//* w ww .j ava 2 s . c o m*/ private static void listStatus(String dirPath) { Path path = new Path(dirPath); boolean exceptionThrown = false; try { FileSystem fs = path.getFileSystem(LoadMetadataUtil.getConf()); FileStatus[] fileStatus = fs.listStatus(path); if (fs.exists(path)) { for (FileStatus status : fileStatus) { BlockLocation[] locations = fs.getFileBlockLocations(status, 0, status.getLen()); for (BlockLocation loc : locations) { loc.getNames(); loc.getHosts(); } } } } catch (IOException e) { exceptionThrown = true; LOG.error("Failed to list Status", e); } assertFalse(exceptionThrown); }
From source file:com.cloudera.impala.catalog.TestLoadHdfsMetadataPerf.java
License:Apache License
/** * List file status by calling abstractFileSystem.listStatusIterator. *//*from ww w . jav a 2 s .c o m*/ private static void listStatusIterator(String dirPath) { Path path = new Path(dirPath); boolean exceptionThrown = false; try { AbstractFileSystem fs = AbstractFileSystem.createFileSystem(path.toUri(), LoadMetadataUtil.getConf()); RemoteIterator<FileStatus> iter = fs.listStatusIterator(path); while (iter.hasNext()) { FileStatus fileStatus = iter.next(); BlockLocation[] locations = fs.getFileBlockLocations(fileStatus.getPath(), 0, fileStatus.getLen()); for (BlockLocation loc : locations) { loc.getNames(); loc.getHosts(); } } } catch (IOException e) { exceptionThrown = true; LOG.error("Failed to list Status Iterator", e); } assertFalse(exceptionThrown); }
From source file:com.cloudera.impala.catalog.TestLoadHdfsMetadataPerf.java
License:Apache License
/** * List file status by calling fileSystem.listLocatedStatus. *//*from w w w . j ava2 s. c o m*/ private static void listLocatedStatus(String dirPath) { Path path = new Path(dirPath); boolean exceptionThrown = false; try { FileSystem fs = path.getFileSystem(LoadMetadataUtil.getConf()); RemoteIterator<LocatedFileStatus> iterator = fs.listLocatedStatus(path); if (fs.exists(path)) { while (iterator.hasNext()) { LocatedFileStatus fileStatus = iterator.next(); BlockLocation[] locations = fileStatus.getBlockLocations(); for (BlockLocation loc : locations) { loc.getHosts(); loc.getNames(); } } } } catch (IOException e) { exceptionThrown = true; LOG.error("Failed to list Located Status", e); } assertFalse(exceptionThrown); }
From source file:com.cloudera.impala.util.LoadMetadataUtil.java
License:Apache License
/** * Create FileBlock according to BlockLocation and hostIndex. Get host names and ports * from BlockLocation, and get all replicas' host id from hostIndex. * * Must be threadsafe. Access to 'hostIndex' must be protected. *//*from w w w .j a va2 s. c om*/ private static FileBlock createFileBlock(BlockLocation loc, ListMap<TNetworkAddress> hostIndex) throws IOException { // Get the location of all block replicas in ip:port format. String[] blockHostPorts = loc.getNames(); // Get the hostnames for all block replicas. Used to resolve which hosts // contain cached data. The results are returned in the same order as // block.getNames() so it allows us to match a host specified as ip:port to // corresponding hostname using the same array index. String[] blockHostNames = loc.getHosts(); Preconditions.checkState(blockHostNames.length == blockHostPorts.length); // Get the hostnames that contain cached replicas of this block. Set<String> cachedHosts = Sets.newHashSet(Arrays.asList(loc.getCachedHosts())); Preconditions.checkState(cachedHosts.size() <= blockHostNames.length); // Now enumerate all replicas of the block, adding any unknown hosts // to hostMap_/hostList_. The host ID (index in to the hostList_) for each // replica is stored in replicaHostIdxs. List<BlockReplica> replicas = Lists.newArrayListWithExpectedSize(blockHostPorts.length); for (int i = 0; i < blockHostPorts.length; ++i) { TNetworkAddress networkAddress = BlockReplica.parseLocation(blockHostPorts[i]); Preconditions.checkState(networkAddress != null); networkAddress.setHdfs_host_name(blockHostNames[i]); int idx = -1; synchronized (hostIndex) { idx = hostIndex.getIndex(networkAddress); } replicas.add(new BlockReplica(idx, cachedHosts.contains(blockHostNames[i]))); } return new FileBlock(loc.getOffset(), loc.getLength(), replicas); }
From source file:com.cloudera.kitten.appmaster.util.HDFSFileFinder.java
License:Open Source License
public static Map<String, Long> getNumBytesOfGlobHeldByDatanodes(Path p, Configuration conf) throws IOException { FileSystem fs = p.getFileSystem(conf); HashMap<String, Long> bytesHeld = Maps.newHashMap(); for (FileStatus f : fs.globStatus(p)) { BlockLocation[] bls = fs.getFileBlockLocations(p, 0, f.getLen()); if (bls.length > 0) { for (BlockLocation bl : bls) { long l = bl.getLength(); for (String name : bl.getNames()) { if (bytesHeld.containsKey(name)) bytesHeld.put(name, bytesHeld.get(name) + l); else bytesHeld.put(name, l); }//from w ww . ja v a 2 s. c o m } } } return bytesHeld; }
From source file:hsyndicate.tools.BlockLocations.java
License:Apache License
public static void main(String[] args) throws Exception { Path p = new Path(args[0]); Configuration conf = new Configuration(); FileSystem fs = p.getFileSystem(conf); FileStatus f = fs.getFileStatus(p);//from w w w. j a v a2s . c o m BlockLocation[] bla = fs.getFileBlockLocations(f, 0, f.getLen()); System.out.println("File : " + f.getPath().toString()); for (BlockLocation bl : bla) { System.out.println("Offset : " + bl.getOffset()); System.out.println("Len : " + bl.getLength()); System.out.println("Hosts : " + makeCommaSeparated(bl.getHosts())); System.out.println("Names : " + makeCommaSeparated(bl.getNames())); System.out.println("TopologyPaths : " + makeCommaSeparated(bl.getTopologyPaths())); } }
From source file:io.hops.erasure_coding.TestErasureCodingManager.java
License:Apache License
@Test public void testLateEncoding() throws IOException { Util.createRandomFile(dfs, testFile, seed, TEST_BLOCK_COUNT, DFS_TEST_BLOCK_SIZE); EncodingPolicy policy = new EncodingPolicy("src", (short) 1); dfs.encodeFile(testFile.toUri().getPath(), policy); EncodingStatus encodingStatus;/* www . j a v a2 s . c o m*/ while (!(encodingStatus = dfs.getEncodingStatus(testFile.toUri().getPath())).isEncoded()) { try { Thread.sleep(1000); } catch (InterruptedException e) { LOG.error("Wait for encoding thread was interrupted."); } } FileStatus fileStatus = dfs.getFileStatus(testFile); Path parityFile = new Path(conf.get(DFSConfigKeys.PARITY_FOLDER, DFSConfigKeys.DEFAULT_PARITY_FOLDER), encodingStatus.getParityFileName()); FileStatus parityStatus = dfs.getFileStatus(parityFile); BlockLocation[] blockLocations = dfs.getFileBlockLocations(fileStatus, 0, TEST_STRIPE_LENGTH * DFS_TEST_BLOCK_SIZE); BlockLocation[] parityBlockLocations = dfs.getFileBlockLocations(parityStatus, 0, TEST_PARITY_LENGTH * DFS_TEST_BLOCK_SIZE); Set<String> set = new HashSet<String>(); for (BlockLocation blockLocation : blockLocations) { String host = blockLocation.getNames()[0]; if (set.contains(host)) { fail("Duplicated location " + Arrays.toString(blockLocation.getNames())); } set.add(host); } for (BlockLocation blockLocation : parityBlockLocations) { String host = blockLocation.getNames()[0]; if (set.contains(host)) { fail("Duplicated location " + Arrays.toString(blockLocation.getNames())); } set.add(host); } }