/**
* Delete the specified snapshot
*
* @param snapshot
* @throws SnapshotDoesNotExistException If the specified snapshot does not exist.
* @throws IOException For filesystem IOExceptions
*/
public void deleteSnapshot(SnapshotDescription snapshot)
throws SnapshotDoesNotExistException, IOException {
// check to see if it is completed
if (!isSnapshotCompleted(snapshot)) {
throw new SnapshotDoesNotExistException(ProtobufUtil.createSnapshotDesc(snapshot));
}
String snapshotName = snapshot.getName();
// first create the snapshot description and check to see if it exists
FileSystem fs = master.getMasterFileSystem().getFileSystem();
Path snapshotDir = SnapshotDescriptionUtils.getCompletedSnapshotDir(snapshotName, rootDir);
// Get snapshot info from file system. The one passed as parameter is a "fake" snapshotInfo with
// just the "name" and it does not contains the "real" snapshot information
snapshot = SnapshotDescriptionUtils.readSnapshotInfo(fs, snapshotDir);
// call coproc pre hook
MasterCoprocessorHost cpHost = master.getMasterCoprocessorHost();
if (cpHost != null) {
cpHost.preDeleteSnapshot(snapshot);
}
LOG.debug("Deleting snapshot: " + snapshotName);
// delete the existing snapshot
if (!fs.delete(snapshotDir, true)) {
throw new HBaseSnapshotException("Failed to delete snapshot directory: " + snapshotDir);
}
// call coproc post hook
if (cpHost != null) {
cpHost.postDeleteSnapshot(snapshot);
}
}
private void createDirIfNotExist(Path path) throws IOException {
if (!fs.exists(path)) {
if (!fs.mkdirs(path)) {
throw new IOException("Unable to create: " + path);
}
}
}
public HdfsDirectory(Path hdfsDirPath, LockFactory lockFactory, Configuration configuration)
throws IOException {
super(lockFactory);
this.hdfsDirPath = hdfsDirPath;
this.configuration = configuration;
fileSystem = FileSystem.get(hdfsDirPath.toUri(), configuration);
fileContext = FileContext.getFileContext(hdfsDirPath.toUri(), configuration);
if (fileSystem instanceof DistributedFileSystem) {
// Make sure dfs is not in safe mode
while (((DistributedFileSystem) fileSystem).setSafeMode(SafeModeAction.SAFEMODE_GET, true)) {
LOG.warn("The NameNode is in SafeMode - Solr will wait 5 seconds and try again.");
try {
Thread.sleep(5000);
} catch (InterruptedException e) {
Thread.interrupted();
// continue
}
}
}
try {
if (!fileSystem.exists(hdfsDirPath)) {
boolean success = fileSystem.mkdirs(hdfsDirPath);
if (!success) {
throw new RuntimeException("Could not create directory: " + hdfsDirPath);
}
}
} catch (Exception e) {
org.apache.solr.common.util.IOUtils.closeQuietly(fileSystem);
throw new RuntimeException("Problem creating directory: " + hdfsDirPath, e);
}
}
private void setUnreadableBySuperuserXattrib(Path p) throws IOException {
if (fs.getScheme().toLowerCase().contains("hdfs")
&& intermediateEncryptionEnabled
&& !fs.getXAttrs(p).containsKey(UNREADABLE_BY_SUPERUSER_XATTRIB)) {
fs.setXAttr(p, UNREADABLE_BY_SUPERUSER_XATTRIB, null, EnumSet.of(XAttrSetFlag.CREATE));
}
}
@Override
public void setup(Reducer<IntWritable, Text, NullWritable, NullWritable>.Context context) {
Configuration conf = context.getConfiguration();
FileSystem fs;
try {
fs = FileSystem.get(conf);
} catch (Exception e) {
throw new RuntimeException("Error opening the FileSystem!");
}
RetrievalEnvironment env = null;
try {
env = new RetrievalEnvironment(conf.get(Constants.IndexPath), fs);
} catch (IOException e) {
throw new RuntimeException("Unable to create RetrievalEnvironment!");
}
collectionDocumentCount = env.readCollectionDocumentCount();
try {
out = fs.create(new Path(env.getTermDocVectorsForwardIndex()), true);
out.writeInt(env.readDocnoOffset());
out.writeInt(collectionDocumentCount);
} catch (Exception e) {
throw new RuntimeException("Error in creating files!");
}
}
public static void run(Configuration conf, Path input, String outputFile)
throws IOException, InstantiationException, IllegalAccessException {
Writer writer;
if (outputFile == null) {
writer = new OutputStreamWriter(System.out);
} else {
writer =
new OutputStreamWriter(
new FileOutputStream(new File(outputFile)), Charset.forName("UTF-8"));
}
try {
FileSystem fs = input.getFileSystem(conf);
for (FileStatus fst : fs.listStatus(input, new DataPathFilter())) {
Path dataPath = fst.getPath();
SequenceFile.Reader reader = new SequenceFile.Reader(fs, dataPath, conf);
try {
Text key = reader.getKeyClass().asSubclass(Text.class).newInstance();
DocumentMapping value = new DocumentMapping();
while (reader.next(key, value)) {
String docId = value.getDocId();
writer.write(docId + "\t" + key + "\n");
}
} finally {
reader.close();
}
}
} finally {
writer.close();
}
}
/*
* Returns the tap for inferences
*/
private Map<String, Tap> getInferencesTap(Scheme scheme) {
Map<String, Tap> inferencesTap = new HashMap<String, Tap>();
try {
String path = null;
FileSystem fs = FileSystem.get(mConfiguration.hadoopConfiguration);
if (mConfiguration.doPredicateIndexing) {
LiteralFields headStream = ruleStreams.getHeadStream();
path = distributedFileSystemManager.getInferencesPath(headStream);
if (fs.exists(new Path(path))) {
inferencesTap.put(headStream.getId().toString(), new Hfs(scheme, path));
}
for (LiteralFields fields : ruleStreams.getBodyStreams()) {
path = distributedFileSystemManager.getInferencesPath(fields);
if (fs.exists(new Path(path))) {
inferencesTap.put(fields.getId().toString(), new Hfs(scheme, path));
}
}
} else {
path = distributedFileSystemManager.getInferencesPath();
if (fs.exists(new Path(path))) {
inferencesTap.put("main", new Hfs(scheme, path));
}
}
} catch (IOException e) {
logger.error("io exception", e);
throw new RuntimeException("io exception", e);
}
return inferencesTap;
}
public void store(Path output) throws IOException {
FileSystem fs = output.getFileSystem(HadoopUtils.createConfiguration());
fs.delete(output, true);
OutputStream os = fs.create(output, true);
store(os);
os.close();
}
@BeforeClass
public static void setUp() throws Exception {
Configuration conf = new Configuration();
conf.set("hadoop.security.auth_to_local", "RULE:[2:$1]");
dfsCluster = new MiniDFSCluster(conf, numSlaves, true, null);
jConf = new JobConf(conf);
mrCluster =
new MiniMRCluster(
0,
0,
numSlaves,
dfsCluster.getFileSystem().getUri().toString(),
1,
null,
null,
null,
jConf);
createTokenFileJson();
verifySecretKeysInJSONFile();
NameNodeAdapter.getDtSecretManager(dfsCluster.getNamesystem()).startThreads();
FileSystem fs = dfsCluster.getFileSystem();
p1 = new Path("file1");
p2 = new Path("file2");
p1 = fs.makeQualified(p1);
}
/**
* set up input file which has the list of input files.
*
* @return boolean
* @throws IOException
*/
private boolean setup() throws IOException {
estimateSavings();
final String randomId = getRandomId();
JobClient jClient = new JobClient(jobconf);
Path jobdir = new Path(jClient.getSystemDir(), NAME + "_" + randomId);
LOG.info(JOB_DIR_LABEL + "=" + jobdir);
jobconf.set(JOB_DIR_LABEL, jobdir.toString());
Path log = new Path(jobdir, "_logs");
// The control file should have small size blocks. This helps
// in spreading out the load from mappers that will be spawned.
jobconf.setInt("dfs.blocks.size", OP_LIST_BLOCK_SIZE);
FileOutputFormat.setOutputPath(jobconf, log);
LOG.info("log=" + log);
// create operation list
FileSystem fs = jobdir.getFileSystem(jobconf);
Path opList = new Path(jobdir, "_" + OP_LIST_LABEL);
jobconf.set(OP_LIST_LABEL, opList.toString());
int opCount = 0, synCount = 0;
SequenceFile.Writer opWriter = null;
try {
opWriter =
SequenceFile.createWriter(
fs, jobconf, opList, Text.class, PolicyInfo.class, SequenceFile.CompressionType.NONE);
for (RaidPolicyPathPair p : raidPolicyPathPairList) {
// If a large set of files are Raided for the first time, files
// in the same directory that tend to have the same size will end up
// with the same map. This shuffle mixes things up, allowing a better
// mix of files.
java.util.Collections.shuffle(p.srcPaths);
for (FileStatus st : p.srcPaths) {
opWriter.append(new Text(st.getPath().toString()), p.policy);
opCount++;
if (++synCount > SYNC_FILE_MAX) {
opWriter.sync();
synCount = 0;
}
}
}
} finally {
if (opWriter != null) {
opWriter.close();
}
fs.setReplication(opList, OP_LIST_REPLICATION); // increase replication for control file
}
raidPolicyPathPairList.clear();
jobconf.setInt(OP_COUNT_LABEL, opCount);
LOG.info("Number of files=" + opCount);
jobconf.setNumMapTasks(
getMapCount(opCount, new JobClient(jobconf).getClusterStatus().getTaskTrackers()));
LOG.info("jobName= " + jobName + " numMapTasks=" + jobconf.getNumMapTasks());
return opCount != 0;
}
@Test
public void testRestrictedRead() throws IOException {
FileSystemPartitionView<TestRecord> partition0 =
partitioned.getPartitionView(URI.create("id_hash=0"));
FileSystemPartitionView<TestRecord> partition1 =
partitioned.getPartitionView(URI.create("id_hash=1"));
FileSystemPartitionView<TestRecord> partition2 =
partitioned.getPartitionView(URI.create("id_hash=2"));
FileSystemPartitionView<TestRecord> partition3 =
partitioned.getPartitionView(URI.create("id_hash=3"));
int count0 = DatasetTestUtilities.materialize(partition0).size();
int total = DatasetTestUtilities.materialize(partitioned).size();
Assert.assertTrue("Should read some records", count0 > 0);
Assert.assertTrue("Should not read the entire dataset", count0 < total);
// move other partitions so they match the partition0 constraint
FileSystem local = LocalFileSystem.getInstance();
local.rename(new Path(partition1.getLocation()), new Path(partitioned.getDirectory(), "0"));
local.rename(
new Path(partition2.getLocation()), new Path(partitioned.getDirectory(), "hash=0"));
local.rename(
new Path(partition3.getLocation()), new Path(partitioned.getDirectory(), "id_hash=00"));
int newCount0 = DatasetTestUtilities.materialize(partition0).size();
Assert.assertEquals("Should match original count", count0, newCount0);
int countByConstraints =
DatasetTestUtilities.materialize(partition0.toConstraintsView()).size();
Assert.assertEquals("Should match total count", total, countByConstraints);
}
public void testInFlow() throws Exception {
FileSystem.get(new Configuration()).delete(new Path("/tmp/input"), true);
FileSystem.get(new Configuration()).delete(new Path("/tmp/output"), true);
Hfs inTap = new Hfs(new ProtobufScheme("value", Example.Person.class), "/tmp/input");
TupleEntryCollector collector = inTap.openForWrite(new HadoopFlowProcess());
collector.add(new TupleEntry(new Fields("value"), new Tuple(BRYAN.build())));
collector.add(new TupleEntry(new Fields("value"), new Tuple(LUCAS.build())));
collector.close();
Pipe inPipe = new Pipe("in");
Pipe p =
new Each(
inPipe,
new Fields("value"),
new ExpandProto(Example.Person.class),
new Fields("id", "name", "email", "position"));
Hfs sink = new Hfs(new TextLine(), "/tmp/output");
new HadoopFlowConnector().connect(inTap, sink, p).complete();
TupleEntryIterator iter = sink.openForRead(new HadoopFlowProcess());
List<Tuple> results = new ArrayList<Tuple>();
while (iter.hasNext()) {
results.add(iter.next().getTupleCopy());
}
assertEquals(2, results.size());
assertEquals(
new Tuple(0, 1, "bryan", "*****@*****.**", Example.Person.Position.CEO.getNumber())
.toString(),
results.get(0).toString());
assertEquals(new Tuple(25, 2, "lucas", null, null).toString(), results.get(1).toString());
}
/**
* 디렉토리가 존재하지 않는다면 생성한다.
*
* @param directory 디렉토리
* @param conf Hadoop Configuration
* @throws java.io.IOException HDFS 작업을 실패한 경우
*/
public static void makeDirectoryIfNotExists(String directory, Configuration conf)
throws IOException {
FileSystem fileSystem = FileSystem.get(conf);
if (!isExist(conf, directory) && !isDirectory(fileSystem, directory)) {
fileSystem.mkdirs(new Path(directory));
}
}
/**
* HDFS 상에서 지정한 파일을 다른 디렉토리로 파일을 이동시킨다.
*
* @param conf Hadoop Configuration
* @param delayFiles 이동할 파일 목록
* @param targetDirectory 목적 디렉토리
* @throws java.io.IOException 파일을 이동할 수 없는 경우
*/
public static void moveFilesToDirectory(
Configuration conf, List<String> delayFiles, String targetDirectory) throws IOException {
for (String path : delayFiles) {
String filename = FileUtils.getFilename(path);
String delayedFilePrefix = filename.split("-")[0];
String outputHead = delayedFilePrefix.replaceAll("delay", "");
String outputMiddle = delayedFilePrefix.substring(0, 5); // todo
String outputTail = filename.replaceAll(delayedFilePrefix, "");
System.out.println(
"Acceleration Dir "
+ targetDirectory
+ "/"
+ outputHead
+ "_"
+ outputMiddle
+ outputTail);
makeDirectoryIfNotExists(targetDirectory, conf);
FileSystem fileSystem = FileSystem.get(conf);
fileSystem.rename(
new Path(path),
new Path(targetDirectory + "/" + outputHead + "_" + outputMiddle + outputTail));
System.out.println("\t Moved: '" + path + "' --> '" + targetDirectory + "'");
}
}
/** Obtain the owner of the log dir. This is determined by checking the job's log directory. */
static String obtainLogDirOwner(TaskAttemptID taskid) throws IOException {
Configuration conf = new Configuration();
FileSystem raw = FileSystem.getLocal(conf).getRaw();
Path jobLogDir = new Path(getJobDir(taskid.getJobID()).getAbsolutePath());
FileStatus jobStat = raw.getFileStatus(jobLogDir);
return jobStat.getOwner();
}
@Test
public void testGetTokensForViewFS() throws IOException, URISyntaxException {
Configuration conf = new Configuration(jConf);
FileSystem dfs = dfsCluster.getFileSystem();
String serviceName = dfs.getCanonicalServiceName();
Path p1 = new Path("/mount1");
Path p2 = new Path("/mount2");
p1 = dfs.makeQualified(p1);
p2 = dfs.makeQualified(p2);
conf.set("fs.viewfs.mounttable.default.link./dir1", p1.toString());
conf.set("fs.viewfs.mounttable.default.link./dir2", p2.toString());
Credentials credentials = new Credentials();
Path lp1 = new Path("viewfs:///dir1");
Path lp2 = new Path("viewfs:///dir2");
Path[] paths = new Path[2];
paths[0] = lp1;
paths[1] = lp2;
TokenCache.obtainTokensForNamenodesInternal(credentials, paths, conf);
Collection<Token<? extends TokenIdentifier>> tns = credentials.getAllTokens();
assertEquals("number of tokens is not 1", 1, tns.size());
boolean found = false;
for (Token<? extends TokenIdentifier> tt : tns) {
System.out.println("token=" + tt);
if (tt.getKind().equals(DelegationTokenIdentifier.HDFS_DELEGATION_KIND)
&& tt.getService().equals(new Text(serviceName))) {
found = true;
}
assertTrue("didn't find token for [" + lp1 + ", " + lp2 + "]", found);
}
}
/**
* Create log directory for the given attempt. This involves creating the following and setting
* proper permissions for the new directories <br>
* {hadoop.log.dir}/userlogs/<jobid> <br>
* {hadoop.log.dir}/userlogs/<jobid>/<attempt-id-as-symlink> <br>
* {one of the mapred-local-dirs}/userlogs/<jobid> <br>
* {one of the mapred-local-dirs}/userlogs/<jobid>/<attempt-id>
*
* @param taskID attempt-id for which log dir is to be created
* @param isCleanup Is this attempt a cleanup attempt ?
* @param localDirs mapred local directories
* @throws IOException
*/
public static void createTaskAttemptLogDir(
TaskAttemptID taskID, boolean isCleanup, String[] localDirs) throws IOException {
String cleanupSuffix = isCleanup ? ".cleanup" : "";
String strAttemptLogDir = getTaskAttemptLogDir(taskID, cleanupSuffix, localDirs);
File attemptLogDir = new File(strAttemptLogDir);
if (!attemptLogDir.mkdirs()) {
throw new IOException("Creation of " + attemptLogDir + " failed.");
}
String strLinkAttemptLogDir =
getJobDir(taskID.getJobID()).getAbsolutePath()
+ File.separatorChar
+ taskID.toString()
+ cleanupSuffix;
if (FileUtil.symLink(strAttemptLogDir, strLinkAttemptLogDir) != 0) {
throw new IOException(
"Creation of symlink from "
+ strLinkAttemptLogDir
+ " to "
+ strAttemptLogDir
+ " failed.");
}
FileSystem localFs = FileSystem.getLocal(new Configuration());
localFs.setPermission(new Path(attemptLogDir.getPath()), new FsPermission((short) 0700));
}
static {
try {
// call newInstance() instead of using a shared instance from a cache
// to avoid accidentally having it closed by someone else
FileSystem fs = FileSystem.newInstance(FileSystem.getDefaultUri(CONF), CONF);
if (!(fs instanceof DistributedFileSystem)) {
String error =
"Cannot connect to HDFS. "
+ CommonConfigurationKeysPublic.FS_DEFAULT_NAME_KEY
+ "("
+ CONF.get(CommonConfigurationKeysPublic.FS_DEFAULT_NAME_KEY)
+ ")"
+ " might be set incorrectly";
throw new RuntimeException(error);
}
DFS = (DistributedFileSystem) fs;
} catch (IOException e) {
throw new RuntimeException("couldn't retrieve FileSystem:\n" + e.getMessage(), e);
}
SUPPORTS_VOLUME_ID =
CONF.getBoolean(
DFSConfigKeys.DFS_HDFS_BLOCKS_METADATA_ENABLED,
DFSConfigKeys.DFS_HDFS_BLOCKS_METADATA_ENABLED_DEFAULT);
}
private double[] getSparkModelInfoFromHDFS(Path location, Configuration conf) throws Exception {
FileSystem fileSystem = FileSystem.get(location.toUri(), conf);
FileStatus[] files = fileSystem.listStatus(location);
if (files == null) throw new Exception("Couldn't find Spark Truck ML weights at: " + location);
ArrayList<Double> modelInfo = new ArrayList<Double>();
for (FileStatus file : files) {
if (file.getPath().getName().startsWith("_")) {
continue;
}
InputStream stream = fileSystem.open(file.getPath());
StringWriter writer = new StringWriter();
IOUtils.copy(stream, writer, "UTF-8");
String raw = writer.toString();
for (String str : raw.split("\n")) {
modelInfo.add(Double.valueOf(str));
}
}
return Doubles.toArray(modelInfo);
}
private void writeIndexDescriptors(ETwinIndexDescriptor ETwinIndexDescriptor) throws IOException {
Configuration conf = getConf();
FileSystem fs = (new Path(IndexConfig.index.get()).getFileSystem(conf));
FileStatus[] fileStats = fs.globStatus(new Path(IndexConfig.index.get(), "*"));
// We write one indexDescriptor per generated index segment.
// Something to consider: right now it's a straight-up serialized Thrift object.
// Would it be better to do the LzoBase64Line thing, so that we can apply our tools?
// or extend the tools?
for (int i = 0; i < fileStats.length; i++) {
ETwinIndexDescriptor.setIndexPart(i);
FileStatus stat = fileStats[i];
Path idxPath =
new Path(stat.getPath().getParent(), "_" + stat.getPath().getName() + ".indexmeta");
FSDataOutputStream os = fs.create(idxPath, true);
@SuppressWarnings("unchecked")
ThriftWritable<ETwinIndexDescriptor> writable =
(ThriftWritable<ETwinIndexDescriptor>)
ThriftWritable.newInstance(ETwinIndexDescriptor.getClass());
writable.set(ETwinIndexDescriptor);
writable.write(os);
os.close();
}
}
public QseqRecordReader(Configuration conf, FileSplit split) throws IOException {
setConf(conf);
file = split.getPath();
start = split.getStart();
end = start + split.getLength();
FileSystem fs = file.getFileSystem(conf);
FSDataInputStream fileIn = fs.open(file);
CompressionCodecFactory codecFactory = new CompressionCodecFactory(conf);
CompressionCodec codec = codecFactory.getCodec(file);
if (codec == null) // no codec. Uncompressed file.
{
positionAtFirstRecord(fileIn);
inputStream = fileIn;
} else { // compressed file
if (start != 0)
throw new RuntimeException(
"Start position for compressed file is not 0! (found " + start + ")");
inputStream = codec.createInputStream(fileIn);
end = Long.MAX_VALUE; // read until the end of the file
}
lineReader = new LineReader(inputStream);
}
@Override
public boolean nextKeyValue() throws IOException, InterruptedException {
FileSystem fileSystem = FileSystem.get(configuration);
if (fileSystem.isDirectory(split.getPath())) {
return false;
}
if (fileProcessed) {
return false;
}
int fileLength = (int) split.getLength();
byte[] result = new byte[fileLength];
FSDataInputStream inputStream = null;
try {
inputStream = fileSystem.open(split.getPath());
IOUtils.readFully(inputStream, result, 0, fileLength);
currentValue.set(result, 0, fileLength);
} finally {
IOUtils.closeStream(inputStream);
}
fileProcessed = true;
return true;
}
@Test
public void test() throws Exception {
Connector c = getConnector();
// make a table
String tableName = getUniqueNames(1)[0];
c.tableOperations().create(tableName);
// write to it
BatchWriter bw = c.createBatchWriter(tableName, new BatchWriterConfig());
Mutation m = new Mutation("row");
m.put("cf", "cq", "value");
bw.addMutation(m);
bw.close();
// create a fake _tmp file in its directory
String id = c.tableOperations().tableIdMap().get(tableName);
FileSystem fs = getCluster().getFileSystem();
Path tmp = new Path("/accumulo/tables/" + id + "/default_tablet/junk.rf_tmp");
fs.create(tmp).close();
for (ProcessReference tserver : getCluster().getProcesses().get(ServerType.TABLET_SERVER)) {
getCluster().killProcess(ServerType.TABLET_SERVER, tserver);
}
getCluster().start();
Scanner scanner = c.createScanner(tableName, Authorizations.EMPTY);
FunctionalTestUtils.count(scanner);
assertFalse(fs.exists(tmp));
}
public Path write(Message... messages) throws Exception {
synchronized (WriteUsingMR.class) {
outputPath = TestUtils.someTemporaryFilePath();
Path inputPath = TestUtils.someTemporaryFilePath();
FileSystem fileSystem = inputPath.getFileSystem(conf);
fileSystem.create(inputPath);
inputMessages = Collections.unmodifiableList(Arrays.asList(messages));
final Job job = new Job(conf, "write");
// input not really used
TextInputFormat.addInputPath(job, inputPath);
job.setInputFormatClass(TextInputFormat.class);
job.setMapperClass(WritingMapper.class);
job.setNumReduceTasks(0);
job.setOutputFormatClass(ProtoParquetOutputFormat.class);
ProtoParquetOutputFormat.setOutputPath(job, outputPath);
ProtoParquetOutputFormat.setProtobufClass(job, TestUtils.inferRecordsClass(messages));
waitForJob(job);
inputMessages = null;
return outputPath;
}
}
public boolean refresh(final Path path) throws IOException {
try (FileSystem fs = path.getFileSystem(new Configuration())) {
if (_fileStatus.isPresent()) {
Optional<FileStatus> oldStatus = this._fileStatus;
try {
Optional<FileStatus> newStatus = Optional.of(fs.getFileStatus(path));
this.exists = newStatus.isPresent();
return (oldStatus.isPresent() != this._fileStatus.isPresent()
|| oldStatus.get().getModificationTime() != newStatus.get().getModificationTime()
|| oldStatus.get().isDirectory() != newStatus.get().isDirectory()
|| oldStatus.get().getLen() != newStatus.get().getLen());
} catch (FileNotFoundException e) {
_fileStatus = Optional.absent();
this.exists = false;
return true;
}
} else {
if (path.getFileSystem(new Configuration()).exists(path)) {
_fileStatus = Optional.of(fs.getFileStatus(path));
return true;
} else {
return false;
}
}
}
}
public static void readHiveResult(String path, OutputStreamWriter outStream, Configuration conf)
throws IOException {
FileSystem fs = FileSystem.get(conf);
Path dir = new Path(path);
if (!fs.exists(dir)) {
throw new IOException("can not found path:" + path);
}
FileStatus[] filelist = fs.listStatus(dir);
Long bytesRead = 0l;
long maxsize = 1024l * 1024 * 1024 * 10;
for (FileStatus f : filelist) {
if (!f.isDir() && !f.getPath().getName().startsWith("_")) {
FSDataInputStream in = fs.open(f.getPath());
BufferedReader bf = new BufferedReader(new InputStreamReader(in));
String line;
while ((line = bf.readLine()) != null) {
bytesRead += line.getBytes().length;
outStream.write(line.replaceAll("\001", ",").replaceAll("\t", ","));
outStream.write("\r\n");
if (bytesRead >= maxsize) {
bf.close();
in.close();
return;
}
}
bf.close();
in.close();
}
}
return;
}
@Test
public void testNonDefaultFS() throws IOException {
FileSystem fs = cluster.getFileSystem();
Configuration conf = fs.getConf();
conf.set(DFSConfigKeys.FS_DEFAULT_NAME_KEY, fs.getUri().toString());
TestTrash.trashNonDefaultFS(conf);
}
@Override
public void initialize(InputSplit genericSplit, TaskAttemptContext taskAttemptContext)
throws IOException {
context = taskAttemptContext;
FileSplit fileSplit = (FileSplit) genericSplit;
lzoFile = fileSplit.getPath();
// The LzoSplitInputFormat is not splittable, so the split length is the whole file.
totalFileSize = fileSplit.getLength();
// Jump through some hoops to create the lzo codec.
Configuration conf = CompatibilityUtil.getConfiguration(context);
CompressionCodecFactory factory = new CompressionCodecFactory(conf);
CompressionCodec codec = factory.getCodec(lzoFile);
((Configurable) codec).setConf(conf);
LzopDecompressor lzopDecompressor = (LzopDecompressor) codec.createDecompressor();
FileSystem fs = lzoFile.getFileSystem(conf);
rawInputStream = fs.open(lzoFile);
// Creating the LzopInputStream here just reads the lzo header for us, nothing more.
// We do the rest of our input off of the raw stream is.
codec.createInputStream(rawInputStream, lzopDecompressor);
// This must be called AFTER createInputStream is called, because createInputStream
// is what reads the header, which has the checksum information. Otherwise getChecksumsCount
// erroneously returns zero, and all block offsets will be wrong.
numCompressedChecksums = lzopDecompressor.getCompressedChecksumsCount();
numDecompressedChecksums = lzopDecompressor.getDecompressedChecksumsCount();
}
@Test(timeout = 2000)
public void testCleanupQueueClosesFilesystem()
throws IOException, InterruptedException, NoSuchFieldException, IllegalAccessException {
Configuration conf = new Configuration();
File file = new File("afile.txt");
file.createNewFile();
Path path = new Path(file.getAbsoluteFile().toURI());
FileSystem.get(conf);
Assert.assertEquals(1, getFileSystemCacheSize());
// With UGI, should close FileSystem
CleanupQueue cleanupQueue = new CleanupQueue();
PathDeletionContext context =
new PathDeletionContext(path, conf, UserGroupInformation.getLoginUser(), null, null);
cleanupQueue.addToQueue(context);
while (getFileSystemCacheSize() > 0) {
Thread.sleep(100);
}
file.createNewFile();
FileSystem.get(conf);
Assert.assertEquals(1, getFileSystemCacheSize());
// Without UGI, should not close FileSystem
context = new PathDeletionContext(path, conf);
cleanupQueue.addToQueue(context);
while (file.exists()) {
Thread.sleep(100);
}
Assert.assertEquals(1, getFileSystemCacheSize());
}
/**
* Check duplicated tweet IDs in <b>tweetIdDir</b>, and output the duplicates to stdout.
*
* @param tweetIdDir
* @throws Exception
*/
public static void checkTidDuplicates(String tweetIdDir) throws Exception {
// First change path strings to URI strings starting with 'file:' or 'hdfs:'
tweetIdDir = MultiFileFolderWriter.getUriStrForPath(tweetIdDir);
Set<String> tidSet = new HashSet<String>();
Configuration conf = HBaseConfiguration.create();
FileSystem fs = FileSystem.get(new URI(tweetIdDir), conf);
int dupCount = 0;
for (FileStatus srcFileStatus : fs.listStatus(new Path(tweetIdDir))) {
String srcFileName = srcFileStatus.getPath().getName();
if (srcFileName.endsWith(".txt") && srcFileName.contains("tweetIds")) {
BufferedReader brTid =
new BufferedReader(new InputStreamReader(fs.open(srcFileStatus.getPath())));
String tid = brTid.readLine();
while (tid != null) {
if (tidSet.contains(tid)) {
System.out.println("Duplicated tweet ID: " + tid);
dupCount++;
} else {
tidSet.add(tid);
}
tid = brTid.readLine();
}
brTid.close();
}
}
System.out.println(
"Number of unique tweet IDs: " + tidSet.size() + ", number of duplicates: " + dupCount);
}