/** Test deleteOnExit */
public void testDeleteOnExit() throws IOException {
Configuration conf = new Configuration();
if (simulatedStorage) {
conf.setBoolean(SimulatedFSDataset.CONFIG_PROPERTY_SIMULATED, true);
}
MiniDFSCluster cluster = new MiniDFSCluster(conf, 1, true, null);
FileSystem fs = cluster.getFileSystem();
FileSystem localfs = FileSystem.getLocal(conf);
try {
// Creates files in HDFS and local file system.
//
Path file1 = new Path("filestatus.dat");
Path file2 = new Path("filestatus2.dat");
Path file3 = new Path("filestatus3.dat");
FSDataOutputStream stm1 = createFile(fs, file1, 1);
FSDataOutputStream stm2 = createFile(fs, file2, 1);
FSDataOutputStream stm3 = createFile(localfs, file3, 1);
System.out.println("DeleteOnExit: Created files.");
// write to files and close. Purposely, do not close file2.
writeFile(stm1);
writeFile(stm3);
stm1.close();
stm2.close();
stm3.close();
// set delete on exit flag on files.
fs.deleteOnExit(file1);
fs.deleteOnExit(file2);
localfs.deleteOnExit(file3);
// close the file system. This should make the above files
// disappear.
fs.close();
localfs.close();
fs = null;
localfs = null;
// reopen file system and verify that file does not exist.
fs = cluster.getFileSystem();
localfs = FileSystem.getLocal(conf);
assertTrue(file1 + " still exists inspite of deletOnExit set.", !fs.exists(file1));
assertTrue(file2 + " still exists inspite of deletOnExit set.", !fs.exists(file2));
assertTrue(file3 + " still exists inspite of deletOnExit set.", !localfs.exists(file3));
System.out.println("DeleteOnExit successful.");
} finally {
IOUtils.closeStream(fs);
IOUtils.closeStream(localfs);
cluster.shutdown();
}
}
/**
* Get a tmp directory on specified URI
*
* @param scheme Scheme of the target FS
* @param authority Authority of the target FS
* @param mkdir create the directory if true
* @param scratchdir path of tmp directory
*/
private String getScratchDir(String scheme, String authority, boolean mkdir, String scratchDir) {
String fileSystem = scheme + ":" + authority;
String dir = fsScratchDirs.get(fileSystem);
if (dir == null) {
Path dirPath = new Path(scheme, authority, scratchDir);
if (mkdir) {
try {
FileSystem fs = dirPath.getFileSystem(conf);
dirPath = new Path(fs.makeQualified(dirPath).toString());
if (!fs.mkdirs(dirPath)) {
throw new RuntimeException("Cannot make directory: " + dirPath.toString());
}
if (isHDFSCleanup) {
fs.deleteOnExit(dirPath);
}
} catch (IOException e) {
throw new RuntimeException(e);
}
}
dir = dirPath.toString();
fsScratchDirs.put(fileSystem, dir);
}
return dir;
}
// Create temp directory in HDFS to store logsearch logs before sorting
public void tmpDirHDFS(
boolean quiet, boolean silent, FileSystem fs, Configuration conf, String tmp, boolean log) {
logConsole(quiet, silent, info, "Creating new Temp Directory in HDFS: " + tmp);
try {
Path path = new Path(tmp);
if (!(fs.exists(path))) {
// Create directory
fs.mkdirs(path);
if (log != true) {
fs.deleteOnExit(path);
}
}
} catch (IOException e) {
if (e.toString().contains("Failed to find any Kerberos")) {
logConsole(true, true, error, "No/bad Kerberos ticket - please authenticate.");
System.exit(1);
} else if (e.toString().contains("quota") && e.toString().contains("exceeded")) {
logConsole(true, true, error, "Disk quota Exceeded.");
System.exit(1);
}
e.printStackTrace();
System.exit(1);
}
}
// 删除文件或文件夹
public void rmr(String folder) throws IOException {
Path path = new Path(folder);
FileSystem fs = FileSystem.get(URI.create(hdfsPath), conf);
fs.deleteOnExit(path);
log.debug("Delete: " + folder);
fs.close();
}
public static void deleteHdfs(String hdfsFile) {
try {
Configuration conf = new Configuration();
FileSystem fs = FileSystem.get(URI.create(hdfsFile), conf);
fs.deleteOnExit(new Path(hdfsFile));
fs.close();
} catch (IOException e) {
LOG.error("[deleteHdfs]", e);
}
}
/**
* Configure <code>job</code> with a TotalOrderPartitioner, partitioning against <code>splitPoints
* </code>. Cleans up the partitions file after job exists.
*/
static void configurePartitioner(Job job, List<ImmutableBytesWritable> splitPoints)
throws IOException {
Configuration conf = job.getConfiguration();
// create the partitions file
FileSystem fs = FileSystem.get(conf);
Path partitionsPath = new Path(conf.get("hbase.fs.tmp.dir"), "partitions_" + UUID.randomUUID());
fs.makeQualified(partitionsPath);
writePartitions(conf, partitionsPath, splitPoints);
fs.deleteOnExit(partitionsPath);
// configure job to use it
job.setPartitionerClass(TotalOrderPartitioner.class);
TotalOrderPartitioner.setPartitionFile(conf, partitionsPath);
}
public static void main(String[] args) throws IOException {
Path f = new Path(args[0]);
System.out.println("javaaction test testjava3" + args[0]);
Configuration conf = new Configuration();
FileSystem hdfs = null;
try {
hdfs = FileSystem.get(conf);
hdfs.deleteOnExit(f);
} catch (IOException e) {
e.printStackTrace();
System.exit(1);
} finally {
if (null != hdfs) hdfs.close();
}
}
/**
* Configure <code>job</code> with a TotalOrderPartitioner, partitioning against <code>splitPoints
* </code>. Cleans up the partitions file after job exists.
*/
static void configurePartitioner(Job job, List<ImmutableBytesWritable> splitPoints)
throws IOException {
Configuration conf = job.getConfiguration();
// create the partitions file
FileSystem fs = FileSystem.get(conf);
String hbaseTmpFsDir =
conf.get(
HConstants.TEMPORARY_FS_DIRECTORY_KEY, HConstants.DEFAULT_TEMPORARY_HDFS_DIRECTORY);
Path partitionsPath = new Path(hbaseTmpFsDir, "partitions_" + UUID.randomUUID());
fs.makeQualified(partitionsPath);
writePartitions(conf, partitionsPath, splitPoints);
fs.deleteOnExit(partitionsPath);
// configure job to use it
job.setPartitionerClass(TotalOrderPartitioner.class);
TotalOrderPartitioner.setPartitionFile(conf, partitionsPath);
}
/**
* Create a given path if it doesn't exist.
*
* @param conf
* @param pathString
* @param permission
* @param isLocal
* @param isCleanUp
* @return
* @throws IOException
*/
private void createPath(
HiveConf conf, Path path, String permission, boolean isLocal, boolean isCleanUp)
throws IOException {
FsPermission fsPermission = new FsPermission(permission);
FileSystem fs;
if (isLocal) {
fs = FileSystem.getLocal(conf);
} else {
fs = path.getFileSystem(conf);
}
if (!fs.exists(path)) {
fs.mkdirs(path, fsPermission);
String dirType = isLocal ? "local" : "HDFS";
LOG.info("Created " + dirType + " directory: " + path.toString());
}
if (isCleanUp) {
fs.deleteOnExit(path);
}
}
/** Testing {@link ResourceUsageMetrics} using {@link HadoopLogsAnalyzer}. */
@Test
@SuppressWarnings("deprecation")
public void testResourceUsageMetricsWithHadoopLogsAnalyzer() throws IOException {
Configuration conf = new Configuration();
// get the input trace file
Path rootInputDir = new Path(System.getProperty("test.tools.input.dir", ""));
Path rootInputSubFolder = new Path(rootInputDir, "rumen/small-trace-test");
Path traceFile = new Path(rootInputSubFolder, "v20-resource-usage-log.gz");
FileSystem lfs = FileSystem.getLocal(conf);
// define the root test directory
Path rootTempDir = new Path(System.getProperty("test.build.data", "/tmp"));
// define output directory
Path outputDir = new Path(rootTempDir, "testResourceUsageMetricsWithHadoopLogsAnalyzer");
lfs.delete(outputDir, true);
lfs.deleteOnExit(outputDir);
// run HadoopLogsAnalyzer
HadoopLogsAnalyzer analyzer = new HadoopLogsAnalyzer();
analyzer.setConf(conf);
Path traceOutput = new Path(outputDir, "trace.json");
analyzer.run(
new String[] {
"-write-job-trace", traceOutput.toString(),
"-v1", traceFile.toString()
});
// test HadoopLogsAnalyzer's output w.r.t ResourceUsageMetrics
// get the logged job
JsonObjectMapperParser<LoggedJob> traceParser =
new JsonObjectMapperParser<LoggedJob>(traceOutput, LoggedJob.class, conf);
// get the logged job from the output trace file
LoggedJob job = traceParser.getNext();
LoggedTaskAttempt attempt = job.getMapTasks().get(0).getAttempts().get(0);
ResourceUsageMetrics metrics = attempt.getResourceUsageMetrics();
// test via deepCompare()
testResourceUsageMetricViaDeepCompare(metrics, 200, 100, 75, 50, true);
}
public BatchGroup mergeAndSpill(LinkedList<BatchGroup> batchGroups) throws SchemaChangeException {
logger.debug("Copier allocator current allocation {}", copierAllocator.getAllocatedMemory());
logger.debug(
"mergeAndSpill: starting total size in memory = {}", oAllocator.getAllocatedMemory());
VectorContainer outputContainer = new VectorContainer();
List<BatchGroup> batchGroupList = Lists.newArrayList();
int batchCount = batchGroups.size();
for (int i = 0; i < batchCount / 2; i++) {
if (batchGroups.size() == 0) {
break;
}
BatchGroup batch = batchGroups.pollLast();
assert batch != null : "Encountered a null batch during merge and spill operation";
batchGroupList.add(batch);
}
if (batchGroupList.size() == 0) {
return null;
}
int estimatedRecordSize = 0;
for (VectorWrapper<?> w : batchGroupList.get(0)) {
try {
estimatedRecordSize += TypeHelper.getSize(w.getField().getType());
} catch (UnsupportedOperationException e) {
estimatedRecordSize += 50;
}
}
int targetRecordCount = Math.max(1, COPIER_BATCH_MEM_LIMIT / estimatedRecordSize);
VectorContainer hyperBatch = constructHyperBatch(batchGroupList);
createCopier(hyperBatch, batchGroupList, outputContainer, true);
int count = copier.next(targetRecordCount);
assert count > 0;
logger.debug(
"mergeAndSpill: estimated record size = {}, target record count = {}",
estimatedRecordSize,
targetRecordCount);
// 1 output container is kept in memory, so we want to hold on to it and transferClone
// allows keeping ownership
VectorContainer c1 = VectorContainer.getTransferClone(outputContainer, oContext);
c1.buildSchema(BatchSchema.SelectionVectorMode.NONE);
c1.setRecordCount(count);
String spillDir = dirs.next();
Path currSpillPath = new Path(Joiner.on("/").join(spillDir, fileName));
currSpillDirs.add(currSpillPath);
String outputFile = Joiner.on("/").join(currSpillPath, spillCount++);
try {
fs.deleteOnExit(currSpillPath);
} catch (IOException e) {
// since this is meant to be used in a batches's spilling, we don't propagate the exception
logger.warn("Unable to mark spill directory " + currSpillPath + " for deleting on exit", e);
}
stats.setLongStat(Metric.SPILL_COUNT, spillCount);
BatchGroup newGroup = new BatchGroup(c1, fs, outputFile, oContext);
try (AutoCloseable a = AutoCloseables.all(batchGroupList)) {
logger.info("Merging and spilling to {}", outputFile);
while ((count = copier.next(targetRecordCount)) > 0) {
outputContainer.buildSchema(BatchSchema.SelectionVectorMode.NONE);
outputContainer.setRecordCount(count);
// note that addBatch also clears the outputContainer
newGroup.addBatch(outputContainer);
}
injector.injectChecked(
context.getExecutionControls(), INTERRUPTION_WHILE_SPILLING, IOException.class);
newGroup.closeOutputStream();
} catch (Throwable e) {
// we only need to cleanup newGroup if spill failed
try {
AutoCloseables.close(e, newGroup);
} catch (Throwable t) {
/* close() may hit the same IO issue; just ignore */
}
throw UserException.resourceError(e)
.message("External Sort encountered an error while spilling to disk")
.addContext(e.getMessage() /* more detail */)
.build(logger);
} finally {
hyperBatch.clear();
}
logger.debug("mergeAndSpill: final total size in memory = {}", oAllocator.getAllocatedMemory());
logger.info("Completed spilling to {}", outputFile);
return newGroup;
}
@Override
public int run(String[] args) throws Exception {
addInputOption();
addOutputOption();
addOption(
"cleanUp", "clean", "true if want to clean up intermediate files.", String.valueOf(true));
addOption("startIndex", "start", "start index.", String.valueOf(0));
Map<String, String> parsedArgs = parseArguments(args);
if (parsedArgs == null) {
return -1;
}
Path inputPath = getInputPath();
Path recordsPath = getTempPath("records");
Path summaryPath = getTempPath("summary");
FileSystem fs = FileSystem.get(getConf());
// 1. count how many records(lines) in each partition.
// 2. store each lines in each partition into temp files.
// step 2 is necessary because hadoop partition into into differenct partition id each time.
//
Job countJob =
prepareJob(
inputPath,
summaryPath,
TextInputFormat.class,
CountPartitionRecordNumMapper.class,
IntWritable.class,
LongWritable.class,
CountPartitionRecordNumReducer.class,
IntWritable.class,
LongWritable.class,
SequenceFileOutputFormat.class);
countJob.getConfiguration().set(RECORDS_PATH, recordsPath.toString());
countJob.setCombinerClass(CountPartitionRecordNumReducer.class);
countJob.waitForCompletion(true);
Job generateJob =
prepareJob(
recordsPath,
getOutputPath(),
SequenceFileInputFormat.class,
AssignRecordIdMapper.class,
NullWritable.class,
Text.class,
TextOutputFormat.class);
generateJob.getConfiguration().set(SUMMARY_PATH, summaryPath.toString());
generateJob
.getConfiguration()
.setLong(
START_INDEX,
getOption("startIndex") == null ? 0 : Long.parseLong(getOption("startIndex")));
generateJob.waitForCompletion(true);
// clean up
if (getOption("cleanUp").equals("true")) {
if (fs.exists(recordsPath)) {
fs.delete(recordsPath, true);
}
if (fs.exists(summaryPath)) {
fs.delete(summaryPath, true);
}
fs.deleteOnExit(getTempPath());
}
// record how many id has been created
totalIdCount =
generateJob
.getCounters()
.findCounter(SequentialIdGeneratorJob.COUNT.TOTAL_ID_COUNT)
.getValue();
return 0;
}