public void inject(Path crawlDb, Path urlDir) throws IOException {
SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
long start = System.currentTimeMillis();
if (LOG.isInfoEnabled()) {
LOG.info("Injector: starting at " + sdf.format(start));
LOG.info("Injector: crawlDb: " + crawlDb);
LOG.info("Injector: urlDir: " + urlDir);
}
Path tempDir =
new Path(
getConf().get("mapred.temp.dir", ".")
+ "/inject-temp-"
+ Integer.toString(new Random().nextInt(Integer.MAX_VALUE)));
// map text input file to a <url,CrawlDatum> file
if (LOG.isInfoEnabled()) {
LOG.info("Injector: Converting injected urls to crawl db entries.");
}
JobConf sortJob = new NutchJob(getConf());
sortJob.setJobName("inject " + urlDir);
FileInputFormat.addInputPath(sortJob, urlDir);
sortJob.setMapperClass(InjectMapper.class);
FileOutputFormat.setOutputPath(sortJob, tempDir);
sortJob.setOutputFormat(SequenceFileOutputFormat.class);
sortJob.setOutputKeyClass(Text.class);
sortJob.setOutputValueClass(CrawlDatum.class);
sortJob.setLong("injector.current.time", System.currentTimeMillis());
RunningJob mapJob = JobClient.runJob(sortJob);
long urlsInjected = mapJob.getCounters().findCounter("injector", "urls_injected").getValue();
long urlsFiltered = mapJob.getCounters().findCounter("injector", "urls_filtered").getValue();
LOG.info("Injector: total number of urls rejected by filters: " + urlsFiltered);
LOG.info(
"Injector: total number of urls injected after normalization and filtering: "
+ urlsInjected);
// merge with existing crawl db
if (LOG.isInfoEnabled()) {
LOG.info("Injector: Merging injected urls into crawl db.");
}
JobConf mergeJob = CrawlDb.createJob(getConf(), crawlDb);
FileInputFormat.addInputPath(mergeJob, tempDir);
mergeJob.setReducerClass(InjectReducer.class);
JobClient.runJob(mergeJob);
CrawlDb.install(mergeJob, crawlDb);
// clean up
FileSystem fs = FileSystem.get(getConf());
fs.delete(tempDir, true);
long end = System.currentTimeMillis();
LOG.info(
"Injector: finished at "
+ sdf.format(end)
+ ", elapsed: "
+ TimingUtil.elapsedTime(start, end));
}
@Override
public int run(String[] args) throws Exception {
if (args.length != 2) {
System.err.printf(
"Usage: %s [generic options] <input> <output>\n", getClass().getSimpleName());
ToolRunner.printGenericCommandUsage(System.err);
return -1;
}
JobConf conf = new JobConf(getConf(), getClass());
conf.setJobName("Max temperature");
FileInputFormat.addInputPath(conf, new Path(args[0]));
FileOutputFormat.setOutputPath(conf, new Path(args[1]));
conf.setOutputKeyClass(Text.class);
conf.setOutputValueClass(IntWritable.class);
conf.setMapperClass(MaxTemperatureMapper.class);
conf.setCombinerClass(MaxTemperatureReducer.class);
conf.setReducerClass(MaxTemperatureReducer.class);
// vv MaxTemperatureDriverV6
conf.setProfileEnabled(true);
conf.setProfileParams(
"-agentlib:hprof=cpu=samples,heap=sites,depth=6," + "force=n,thread=y,verbose=n,file=%s");
conf.setProfileTaskRange(true, "0-2");
// ^^ MaxTemperatureDriverV6
JobClient.runJob(conf);
return 0;
}
public static void runJob(String[] args) {
JobConf conf = new JobConf(CassandraBulkLoader.class);
if (args.length >= 4) {
conf.setNumReduceTasks(new Integer(args[3]));
}
try {
// We store the cassandra storage-conf.xml on the HDFS cluster
DistributedCache.addCacheFile(new URI("/cassandra/storage-conf.xml#storage-conf.xml"), conf);
} catch (URISyntaxException e) {
throw new RuntimeException(e);
}
conf.setInputFormat(KeyValueTextInputFormat.class);
conf.setJobName("CassandraBulkLoader_v2");
conf.setMapperClass(Map.class);
conf.setReducerClass(Reduce.class);
conf.setOutputKeyClass(Text.class);
conf.setOutputValueClass(Text.class);
FileInputFormat.setInputPaths(conf, new Path(args[1]));
FileOutputFormat.setOutputPath(conf, new Path(args[2]));
try {
JobClient.runJob(conf);
} catch (IOException e) {
throw new RuntimeException(e);
}
}
/** Test getSplits */
@Test
@SuppressWarnings("unchecked")
public void testSplits() throws IOException {
JobConf job = new JobConf(defaultConf);
localFs.delete(workDir, true);
writeFile(
localFs,
new Path(workDir, "test.txt"),
"the quick\nbrown\nfox jumped\nover\n the lazy\n dog\n");
FileInputFormat.setInputPaths(job, workDir);
CombineFileInputFormat format =
new CombineFileInputFormat() {
@Override
public RecordReader getRecordReader(InputSplit split, JobConf job, Reporter reporter)
throws IOException {
return new CombineFileRecordReader(
job, (CombineFileSplit) split, reporter, CombineFileRecordReader.class);
}
};
final int SIZE_SPLITS = 1;
LOG.info("Trying to getSplits with splits = " + SIZE_SPLITS);
InputSplit[] splits = format.getSplits(job, SIZE_SPLITS);
LOG.info("Got getSplits = " + splits.length);
assertEquals("splits == " + SIZE_SPLITS, SIZE_SPLITS, splits.length);
}
private String runJob() throws Exception {
OutputStream os = getFileSystem().create(new Path(getInputDir(), "text.txt"));
Writer wr = new OutputStreamWriter(os);
wr.write("hello1\n");
wr.write("hello2\n");
wr.write("hello3\n");
wr.close();
JobConf conf = createJobConf();
conf.setJobName("mr");
conf.setJobPriority(JobPriority.HIGH);
conf.setInputFormat(TextInputFormat.class);
conf.setMapOutputKeyClass(LongWritable.class);
conf.setMapOutputValueClass(Text.class);
conf.setOutputFormat(TextOutputFormat.class);
conf.setOutputKeyClass(LongWritable.class);
conf.setOutputValueClass(Text.class);
conf.setMapperClass(org.apache.hadoop.mapred.lib.IdentityMapper.class);
conf.setReducerClass(org.apache.hadoop.mapred.lib.IdentityReducer.class);
FileInputFormat.setInputPaths(conf, getInputDir());
FileOutputFormat.setOutputPath(conf, getOutputDir());
return JobClient.runJob(conf).getID().toString();
}
public static void runSortJob(String... args) throws Exception {
Path input = new Path(args[0]);
Path output = new Path(args[1]);
JobConf job = new JobConf();
job.setNumReduceTasks(2);
job.setInputFormat(KeyValueTextInputFormat.class);
job.setOutputFormat(TextOutputFormat.class);
job.setMapOutputKeyClass(Text.class);
job.setMapOutputValueClass(Text.class);
FileInputFormat.setInputPaths(job, input);
FileOutputFormat.setOutputPath(job, output);
job.setJarByClass(SampleJob.class);
output.getFileSystem(job).delete(output, true);
JobClient jc = new JobClient(job);
JobClient.setTaskOutputFilter(job, JobClient.TaskStatusFilter.ALL);
RunningJob rj = jc.submitJob(job);
try {
if (!jc.monitorAndPrintJob(job, rj)) {
System.out.println("Job Failed: " + rj.getFailureInfo());
throw new IOException("Job failed!");
}
} catch (InterruptedException ie) {
Thread.currentThread().interrupt();
}
}
@Override
public int run(String[] args) throws Exception {
JobConf conf = new JobConf(getConf(), getClass());
conf.setJobName("UFO count");
String[] otherArgs = new GenericOptionsParser(conf, args).getRemainingArgs();
if (otherArgs.length != 2) {
System.err.println("Usage: avro UFO counter <in> <out>");
System.exit(2);
}
FileInputFormat.addInputPath(conf, new Path(otherArgs[0]));
Path outputPath = new Path(otherArgs[1]);
FileOutputFormat.setOutputPath(conf, outputPath);
outputPath.getFileSystem(conf).delete(outputPath);
Schema input_schema = Schema.parse(getClass().getResourceAsStream("ufo.avsc"));
AvroJob.setInputSchema(conf, input_schema);
AvroJob.setMapOutputSchema(
conf,
Pair.getPairSchema(Schema.create(Schema.Type.STRING), Schema.create(Schema.Type.LONG)));
AvroJob.setOutputSchema(conf, OUTPUT_SCHEMA);
AvroJob.setMapperClass(conf, AvroRecordMapper.class);
AvroJob.setReducerClass(conf, AvroRecordReducer.class);
conf.setInputFormat(AvroInputFormat.class);
JobClient.runJob(conf);
return 0;
}
@Override
public int run(String[] args) throws Exception {
JobConf conf = JobBuilder.parseInputAndOutput(this, getConf(), args);
if (conf == null) {
return -1;
}
conf.setInputFormat(SequenceFileInputFormat.class);
conf.setOutputKeyClass(IntWritable.class);
conf.setOutputFormat(SequenceFileOutputFormat.class);
SequenceFileOutputFormat.setCompressOutput(conf, true);
SequenceFileOutputFormat.setOutputCompressorClass(conf, GzipCodec.class);
SequenceFileOutputFormat.setOutputCompressionType(conf, CompressionType.BLOCK);
conf.setPartitionerClass(TotalOrderPartitioner.class);
InputSampler.Sampler<IntWritable, Text> sampler =
new InputSampler.RandomSampler<IntWritable, Text>(0.1, 10000, 10);
Path input = FileInputFormat.getInputPaths(conf)[0];
input = input.makeQualified(input.getFileSystem(conf));
Path partitionFile = new Path(input, "_partitions");
TotalOrderPartitioner.setPartitionFile(conf, partitionFile);
InputSampler.writePartitionFile(conf, sampler);
// Add to DistributedCache
URI partitionUri = new URI(partitionFile.toString() + "#_partitions");
DistributedCache.addCacheFile(partitionUri, conf);
DistributedCache.createSymlink(conf);
JobClient.runJob(conf);
return 0;
}
/** Test using the gzip codec for reading */
@Test
public void testGzip() throws IOException {
JobConf job = new JobConf(defaultConf);
CompressionCodec gzip = new GzipCodec();
ReflectionUtils.setConf(gzip, job);
localFs.delete(workDir, true);
writeFile(
localFs,
new Path(workDir, "part1.txt.gz"),
gzip,
"the quick\nbrown\nfox jumped\nover\n the lazy\n dog\n");
writeFile(localFs, new Path(workDir, "part2.txt.gz"), gzip, "this is a test\nof gzip\n");
FileInputFormat.setInputPaths(job, workDir);
TextInputFormat format = new TextInputFormat();
format.configure(job);
InputSplit[] splits = format.getSplits(job, 100);
assertEquals("compressed splits == 2", 2, splits.length);
FileSplit tmp = (FileSplit) splits[0];
if (tmp.getPath().getName().equals("part2.txt.gz")) {
splits[0] = splits[1];
splits[1] = tmp;
}
List<Text> results = readSplit(format, splits[0], job);
assertEquals("splits[0] length", 6, results.size());
assertEquals("splits[0][5]", " dog", results.get(5).toString());
results = readSplit(format, splits[1], job);
assertEquals("splits[1] length", 2, results.size());
assertEquals("splits[1][0]", "this is a test", results.get(0).toString());
assertEquals("splits[1][1]", "of gzip", results.get(1).toString());
}
public void testComplexNameWithRegex() throws Exception {
OutputStream os = getFileSystem().create(new Path(getInputDir(), "text.txt"));
Writer wr = new OutputStreamWriter(os);
wr.write("b a\n");
wr.close();
JobConf conf = createJobConf();
conf.setJobName("name \\Evalue]");
conf.setInputFormat(TextInputFormat.class);
conf.setOutputKeyClass(LongWritable.class);
conf.setOutputValueClass(Text.class);
conf.setMapperClass(IdentityMapper.class);
FileInputFormat.setInputPaths(conf, getInputDir());
FileOutputFormat.setOutputPath(conf, getOutputDir());
JobClient.runJob(conf);
Path[] outputFiles =
FileUtil.stat2Paths(getFileSystem().listStatus(getOutputDir(), new OutputLogFilter()));
assertEquals(1, outputFiles.length);
InputStream is = getFileSystem().open(outputFiles[0]);
BufferedReader reader = new BufferedReader(new InputStreamReader(is));
assertEquals("0\tb a", reader.readLine());
assertNull(reader.readLine());
reader.close();
}
private static IntWritable deduceInputFile(JobConf job) {
Path[] inputPaths = FileInputFormat.getInputPaths(job);
Path inputFile = new Path(job.get("map.input.file"));
// value == one for sort-input; value == two for sort-output
return (inputFile.getParent().equals(inputPaths[0])) ? sortInput : sortOutput;
}
public static int main(String[] args) throws Exception {
int i;
String outPath;
int numMaps = 0, numReds = 0;
List<String> other_args = new ArrayList<String>();
for (i = 0; i < args.length; ++i) {
try {
if ("-m".equals(args[i])) {
numMaps = Integer.parseInt(args[++i]);
} else if ("-r".equals(args[i])) {
numReds = Integer.parseInt(args[++i]);
} else {
other_args.add(args[i]);
}
} catch (NumberFormatException except) {
System.out.println("ERROR: Integer expected instead of " + args[i]);
printUsage();
} catch (ArrayIndexOutOfBoundsException except) {
System.out.println("ERROR: Required parameter missing from " + args[i - 1]);
printUsage(); // exits
}
}
// Make sure there are exactly 2 parameters left.
if (other_args.size() != 2) {
System.out.println(
"ERROR: Wrong number of parameters: " + other_args.size() + " instead of 2.");
printUsage();
}
Date startTime = new Date();
System.out.println("Job started: " + startTime);
Date startIteration;
Date endIteration;
JobConf conf = new JobConf(Kmeans.class);
conf.setJobName("kmeans");
conf.setOutputKeyClass(IntWritable.class);
conf.setOutputValueClass(Text.class);
conf.setMapOutputKeyClass(IntWritable.class);
conf.setMapOutputValueClass(ClusterWritable.class);
conf.setMapperClass(MapClass.class);
conf.setReducerClass(Reduce.class);
conf.setNumMapTasks(numMaps);
conf.setNumReduceTasks(numReds);
FileInputFormat.setInputPaths(conf, new Path(other_args.get(0)));
outPath = new String(other_args.get(1));
FileOutputFormat.setOutputPath(conf, new Path(outPath));
startIteration = new Date();
JobClient.runJob(conf);
endIteration = new Date();
System.out.println(
"The iteration took "
+ (endIteration.getTime() - startIteration.getTime()) / 1000
+ " seconds.");
return 0;
}
public static void main(String[] args) throws IOException {
/*JobConf conf = new JobConf();
conf.setOutputKeyClass(Text.class);
conf.setOutputValueClass(Text.class);
conf.setInputFormat(TextInputFormat.class);
conf.setOutputFormat(TextOutputFormat.class);
conf.setMapperClass(IpCounterMapper.class);
conf.setCombinerClass(IpCounterReducer.class);
conf.setReducerClass(IpCounterReducer.class);
String inputDir = args[0];
String outputDir = args[1];
FileInputFormat.setInputPaths(conf, inputDir);
FileOutputFormat.setOutputPath(conf, new Path(outputDir));
boolean flag = JobClient.runJob(conf).isSuccessful();
System.out.println(args.length);*/
if (args.length < 2) {
System.out.println("args not right!");
return;
}
JobConf conf = new JobConf(IpCount1.class);
// set output key class
conf.setOutputKeyClass(Text.class);
conf.setOutputValueClass(Text.class);
// set mapper & reducer class
conf.setMapperClass(IpCounterMapper.class);
conf.setCombinerClass(IpCounterReducer.class);
conf.setReducerClass(IpCounterReducer.class);
// set format
conf.setInputFormat(TextInputFormat.class);
conf.setOutputFormat(TextOutputFormat.class);
String inputDir = args[0];
String outputDir = args[1];
// FileInputFormat.setInputPaths(conf, "/user/hadoop/rongxin/locationinput/");
FileInputFormat.setInputPaths(conf, inputDir);
FileOutputFormat.setOutputPath(conf, new Path(outputDir));
boolean flag = JobClient.runJob(conf).isSuccessful();
}
/** Configure a job given argv. */
public static boolean parseArgs(String[] argv, JobConf job) throws IOException {
if (argv.length < 1) {
return 0 == printUsage();
}
for (int i = 0; i < argv.length; ++i) {
if (argv.length == i + 1) {
System.out.println("ERROR: Required parameter missing from " + argv[i]);
return 0 == printUsage();
}
try {
if ("-m".equals(argv[i])) {
job.setNumMapTasks(Integer.parseInt(argv[++i]));
} else if ("-r".equals(argv[i])) {
job.setNumReduceTasks(Integer.parseInt(argv[++i]));
} else if ("-inFormat".equals(argv[i])) {
job.setInputFormat(Class.forName(argv[++i]).asSubclass(InputFormat.class));
} else if ("-outFormat".equals(argv[i])) {
job.setOutputFormat(Class.forName(argv[++i]).asSubclass(OutputFormat.class));
} else if ("-outKey".equals(argv[i])) {
job.setOutputKeyClass(Class.forName(argv[++i]).asSubclass(WritableComparable.class));
} else if ("-outValue".equals(argv[i])) {
job.setOutputValueClass(Class.forName(argv[++i]).asSubclass(Writable.class));
} else if ("-keepmap".equals(argv[i])) {
job.set(
org.apache.hadoop.mapreduce.GenericMRLoadGenerator.MAP_PRESERVE_PERCENT, argv[++i]);
} else if ("-keepred".equals(argv[i])) {
job.set(
org.apache.hadoop.mapreduce.GenericMRLoadGenerator.REDUCE_PRESERVE_PERCENT,
argv[++i]);
} else if ("-outdir".equals(argv[i])) {
FileOutputFormat.setOutputPath(job, new Path(argv[++i]));
} else if ("-indir".equals(argv[i])) {
FileInputFormat.addInputPaths(job, argv[++i]);
} else if ("-inFormatIndirect".equals(argv[i])) {
job.setClass(
org.apache.hadoop.mapreduce.GenericMRLoadGenerator.INDIRECT_INPUT_FORMAT,
Class.forName(argv[++i]).asSubclass(InputFormat.class),
InputFormat.class);
job.setInputFormat(IndirectInputFormat.class);
} else {
System.out.println("Unexpected argument: " + argv[i]);
return 0 == printUsage();
}
} catch (NumberFormatException except) {
System.out.println("ERROR: Integer expected instead of " + argv[i]);
return 0 == printUsage();
} catch (Exception e) {
throw (IOException) new IOException().initCause(e);
}
}
return true;
}
/**
* @param process
* @param tap
* @param conf
*/
@Override
public void sourceConfInit(
FlowProcess<JobConf> process, Tap<JobConf, RecordReader, OutputCollector> tap, JobConf conf) {
MongoConfigUtil.setReadSplitsFromShards(conf, true);
MongoConfigUtil.setInputURI(conf, this.mongoUri);
FileInputFormat.setInputPaths(conf, this.getIdentifier());
conf.setInputFormat(MongoInputFormat.class);
// TODO: MongoConfigUtil.setFields(conf, fieldsBson);
// if (!this.query.isEmpty())
MongoConfigUtil.setQuery(conf, this.query);
// TODO: MongoConfigUtil.setFields(conf, fields);
}
private static void runIOTest(Class<? extends Mapper> mapperClass, Path outputDir)
throws IOException {
JobConf job = new JobConf(fsConfig, DFSCIOTest.class);
FileInputFormat.setInputPaths(job, CONTROL_DIR);
job.setInputFormat(SequenceFileInputFormat.class);
job.setMapperClass(mapperClass);
job.setReducerClass(AccumulatingReducer.class);
FileOutputFormat.setOutputPath(job, outputDir);
job.setOutputKeyClass(Text.class);
job.setOutputValueClass(Text.class);
job.setNumReduceTasks(1);
JobClient.runJob(job);
}
public static void main(String[] args) throws Exception {
JobConf conf = new JobConf(Add1.class);
conf.setJobName("sumar1");
conf.setOutputKeyClass(IntWritable.class);
conf.setOutputValueClass(IntWritable.class);
conf.setMapperClass(Map.class);
conf.setInputFormat(TextInputFormat.class);
conf.setOutputFormat(TextOutputFormat.class);
FileInputFormat.setInputPaths(conf, new Path(args[0]));
FileOutputFormat.setOutputPath(conf, new Path(args[1]));
JobClient.runJob(conf);
}
/** Test using the gzip codec and an empty input file */
@Test
public void testGzipEmpty() throws IOException {
JobConf job = new JobConf(defaultConf);
CompressionCodec gzip = new GzipCodec();
ReflectionUtils.setConf(gzip, job);
localFs.delete(workDir, true);
writeFile(localFs, new Path(workDir, "empty.gz"), gzip, "");
FileInputFormat.setInputPaths(job, workDir);
TextInputFormat format = new TextInputFormat();
format.configure(job);
InputSplit[] splits = format.getSplits(job, 100);
assertEquals(
"Compressed files of length 0 are not returned from FileInputFormat.getSplits().",
1,
splits.length);
List<Text> results = readSplit(format, splits[0], job);
assertEquals("Compressed empty file length == 0", 0, results.size());
}
// Main function
public static void main(String[] args) throws Exception {
// TODO Auto-generated method stub
JobConf conf = new JobConf(ProcessUnits.class);
conf.setJobName("max_eletricityunits");
conf.setOutputKeyClass(Text.class);
conf.setOutputValueClass(IntWritable.class);
conf.setMapperClass(EE_Mapper.class);
conf.setCombinerClass(EE_Reducer.class);
conf.setReducerClass(EE_Reducer.class);
conf.setInputFormat(TextInputFormat.class);
conf.setOutputFormat(TextOutputFormat.class);
FileInputFormat.setInputPaths(conf, new Path(args[0]));
FileOutputFormat.setOutputPath(conf, new Path(args[1]));
JobClient.runJob(conf);
}
public static void main(String args[]) throws IOException {
JobConf job = new JobConf(WordCountJob.class);
job.setJobName("Word Count Example");
FileInputFormat.setInputPaths(job, args[0]);
job.setInputFormat(TextInputFormat.class);
job.setMapperClass(MapTask.class);
job.setCombinerClass(ReduceTask.class);
job.setReducerClass(ReduceTask.class);
job.setOutputKeyClass(Text.class);
job.setOutputValueClass(IntWritable.class);
job.setOutputFormat(TextOutputFormat.class);
FileOutputFormat.setOutputPath(job, new Path(args[1]));
JobClient.runJob(job);
}
public static void seekTest(FileSystem fs, boolean fastCheck) throws Exception {
fs.delete(READ_DIR, true);
JobConf job = new JobConf(conf, TestFileSystem.class);
job.setBoolean("fs.test.fastCheck", fastCheck);
FileInputFormat.setInputPaths(job, CONTROL_DIR);
job.setInputFormat(SequenceFileInputFormat.class);
job.setMapperClass(SeekMapper.class);
job.setReducerClass(LongSumReducer.class);
FileOutputFormat.setOutputPath(job, READ_DIR);
job.setOutputKeyClass(Text.class);
job.setOutputValueClass(LongWritable.class);
job.setNumReduceTasks(1);
JobClient.runJob(job);
}
public static void main(String[] args) throws Exception {
JobConf conf = new JobConf(WordCount.class);
conf.setJobName("wordcount");
conf.setOutputKeyClass(Text.class);
conf.setOutputValueClass(IntWritable.class);
conf.setMapperClass(Map.class);
conf.setCombinerClass(Reduce.class);
conf.setReducerClass(Reduce.class);
conf.setInputFormat(TextInputFormat.class);
conf.setOutputFormat(TextOutputFormat.class);
FileInputFormat.setInputPaths(conf, new Path(args[0]));
FileOutputFormat.setOutputPath(conf, new Path(args[1]));
JobClient.runJob(conf);
}
public int run(String[] args) throws Exception {
JobConf conf = new JobConf(getConf(), XiangLi1_exercise3.class);
conf.setJobName("xiangli1_exercise3");
conf.setNumReduceTasks(0);
conf.setOutputKeyClass(Text.class);
conf.setOutputValueClass(Text.class);
conf.setMapperClass(Map.class);
// conf.setCombinerClass(Reduce.class);
// conf.setReducerClass(Reduce.class);
conf.setInputFormat(TextInputFormat.class);
conf.setOutputFormat(TextOutputFormat.class);
FileInputFormat.setInputPaths(conf, new Path(args[0]));
FileOutputFormat.setOutputPath(conf, new Path(args[1]));
JobClient.runJob(conf);
return 0;
}
public static void main(String[] args) throws IOException {
if (args.length != 2) {
System.err.println("Usage: OldMaxTemperature <input path> <output path>");
System.exit(-1);
}
/*[*/ JobConf conf = new JobConf(OldMaxTemperature.class); /*]*/
/*[*/ conf /*]*/.setJobName("Max temperature");
FileInputFormat.addInputPath(/*[*/ conf /*]*/, new Path(args[0]));
FileOutputFormat.setOutputPath(/*[*/ conf /*]*/, new Path(args[1]));
/*[*/ conf /*]*/.setMapperClass(OldMaxTemperatureMapper.class);
/*[*/ conf /*]*/.setReducerClass(OldMaxTemperatureReducer.class);
/*[*/ conf /*]*/.setOutputKeyClass(Text.class);
/*[*/ conf /*]*/.setOutputValueClass(IntWritable.class);
/*[*/ JobClient.runJob(conf); /*]*/
}
@Override
public int run(String[] args) throws Exception {
Configuration conf = getConf();
FileSystem fs = FileSystem.get(conf);
JobConf job = new JobConf(conf);
job.setJarByClass(Jacobi.class);
fs.delete(new Path("curX"), true);
job.setInputFormat(TextInputFormat.class);
job.setOutputFormat(TextOutputFormat.class);
job.setMapperClass(Map.class);
job.setReducerClass(Reduce.class);
job.setOutputKeyClass(IntWritable.class);
job.setOutputValueClass(DoubleWritable.class);
FileInputFormat.setInputPaths(job, new Path("preX"));
FileOutputFormat.setOutputPath(job, new Path("curX"));
JobClient.runJob(job);
return 1;
}
@Override
public int run(String[] args) throws Exception {
JobConf conf = new JobConf(getConf(), Sqrt2.class);
conf.setJobName("sqrt2");
conf.setOutputKeyClass(DoubleWritable.class);
conf.setOutputValueClass(DoubleWritable.class);
conf.setMapperClass(Map.class);
/*conf.setCombinerClass(Reduce.class);*/
conf.setReducerClass(Reduce.class);
conf.setInputFormat(TextInputFormat.class);
conf.setOutputFormat(TextOutputFormat.class);
FileInputFormat.setInputPaths(conf, new Path(args[0]));
FileOutputFormat.setOutputPath(conf, new Path(args[1]));
JobClient.runJob(conf);
return 0;
}
public static void main(String[] args) throws Exception {
JobConf conf = new JobConf(Main.class);
conf.setJobName("feels-analysis");
conf.setOutputKeyClass(Text.class);
conf.setOutputValueClass(TheOutputClass.class);
conf.setMapperClass(Map.class);
conf.setCombinerClass(Reduce.class);
conf.setReducerClass(Reduce.class);
conf.setNumReduceTasks(1);
conf.setInputFormat(CSVTextInputFormat.class);
conf.setOutputFormat(TextOutputFormat.class);
// TODO: determine whether we need extra output
MultipleOutputs.addMultiNamedOutput(
conf, SECOND_OUTPUT, TextOutputFormat.class, Text.class, TheOutputClass.class);
FileInputFormat.setInputPaths(conf, new Path(args[0]));
FileOutputFormat.setOutputPath(conf, new Path(args[1]));
JobClient.runJob(conf);
}
public static void main(String[] args) throws Exception {
JobConf conf = new JobConf(NeighborSearch.class);
conf.setJobName("star searching");
conf.setOutputKeyClass(BlockIDWritable.class);
conf.setOutputValueClass(PairWritable.class);
conf.setMapperClass(Map.class);
// conf.setCombinerClass(Reduce.class);
conf.setReducerClass(Reduce.class);
// conf.setPartitionerClass(BlockPartitioner.class);
// conf.setFloat("mapred.reduce.slowstart.completed.maps", (float) 1.0);
conf.setInputFormat(StarInputFormat.class);
conf.setOutputFormat(StarOutputFormat.class);
FileInputFormat.setInputPaths(conf, new Path(args[0]));
FileOutputFormat.setOutputPath(conf, new Path(args[1]));
JobClient.runJob(conf);
}
@Test
public void testFormat() throws Exception {
JobConf job = new JobConf(defaultConf);
Path file = new Path(workDir, "test.txt");
// A reporter that does nothing
Reporter reporter = Reporter.NULL;
int seed = new Random().nextInt();
LOG.info("seed = " + seed);
Random random = new Random(seed);
localFs.delete(workDir, true);
FileInputFormat.setInputPaths(job, workDir);
// for a variety of lengths
for (int length = 0; length < MAX_LENGTH; length += random.nextInt(MAX_LENGTH / 10) + 1) {
LOG.debug("creating; entries = " + length);
// create a file with length entries
Writer writer = new OutputStreamWriter(localFs.create(file));
try {
for (int i = 0; i < length; i++) {
writer.write(Integer.toString(i));
writer.write("\n");
}
} finally {
writer.close();
}
// try splitting the file in a variety of sizes
TextInputFormat format = new TextInputFormat();
format.configure(job);
LongWritable key = new LongWritable();
Text value = new Text();
for (int i = 0; i < 3; i++) {
int numSplits = random.nextInt(MAX_LENGTH / 20) + 1;
LOG.debug("splitting: requesting = " + numSplits);
InputSplit[] splits = format.getSplits(job, numSplits);
LOG.debug("splitting: got = " + splits.length);
if (length == 0) {
assertEquals(
"Files of length 0 are not returned from FileInputFormat.getSplits().",
1,
splits.length);
assertEquals("Empty file length == 0", 0, splits[0].getLength());
}
// check each split
BitSet bits = new BitSet(length);
for (int j = 0; j < splits.length; j++) {
LOG.debug("split[" + j + "]= " + splits[j]);
RecordReader<LongWritable, Text> reader =
format.getRecordReader(splits[j], job, reporter);
try {
int count = 0;
while (reader.next(key, value)) {
int v = Integer.parseInt(value.toString());
LOG.debug("read " + v);
if (bits.get(v)) {
LOG.warn(
"conflict with " + v + " in split " + j + " at position " + reader.getPos());
}
assertFalse("Key in multiple partitions.", bits.get(v));
bits.set(v);
count++;
}
LOG.debug("splits[" + j + "]=" + splits[j] + " count=" + count);
} finally {
reader.close();
}
}
assertEquals("Some keys in no partition.", length, bits.cardinality());
}
}
}
@Test
public void testSplitableCodecs() throws IOException {
JobConf conf = new JobConf(defaultConf);
int seed = new Random().nextInt();
// Create the codec
CompressionCodec codec = null;
try {
codec =
(CompressionCodec)
ReflectionUtils.newInstance(
conf.getClassByName("org.apache.hadoop.io.compress.BZip2Codec"), conf);
} catch (ClassNotFoundException cnfe) {
throw new IOException("Illegal codec!");
}
Path file = new Path(workDir, "test" + codec.getDefaultExtension());
// A reporter that does nothing
Reporter reporter = Reporter.NULL;
LOG.info("seed = " + seed);
Random random = new Random(seed);
FileSystem localFs = FileSystem.getLocal(conf);
localFs.delete(workDir, true);
FileInputFormat.setInputPaths(conf, workDir);
final int MAX_LENGTH = 500000;
// for a variety of lengths
for (int length = MAX_LENGTH / 2;
length < MAX_LENGTH;
length += random.nextInt(MAX_LENGTH / 4) + 1) {
LOG.info("creating; entries = " + length);
// create a file with length entries
Writer writer = new OutputStreamWriter(codec.createOutputStream(localFs.create(file)));
try {
for (int i = 0; i < length; i++) {
writer.write(Integer.toString(i));
writer.write("\n");
}
} finally {
writer.close();
}
// try splitting the file in a variety of sizes
TextInputFormat format = new TextInputFormat();
format.configure(conf);
LongWritable key = new LongWritable();
Text value = new Text();
for (int i = 0; i < 3; i++) {
int numSplits = random.nextInt(MAX_LENGTH / 2000) + 1;
LOG.info("splitting: requesting = " + numSplits);
InputSplit[] splits = format.getSplits(conf, numSplits);
LOG.info("splitting: got = " + splits.length);
// check each split
BitSet bits = new BitSet(length);
for (int j = 0; j < splits.length; j++) {
LOG.debug("split[" + j + "]= " + splits[j]);
RecordReader<LongWritable, Text> reader =
format.getRecordReader(splits[j], conf, reporter);
try {
int counter = 0;
while (reader.next(key, value)) {
int v = Integer.parseInt(value.toString());
LOG.debug("read " + v);
if (bits.get(v)) {
LOG.warn(
"conflict with " + v + " in split " + j + " at position " + reader.getPos());
}
assertFalse("Key in multiple partitions.", bits.get(v));
bits.set(v);
counter++;
}
if (counter > 0) {
LOG.info("splits[" + j + "]=" + splits[j] + " count=" + counter);
} else {
LOG.debug("splits[" + j + "]=" + splits[j] + " count=" + counter);
}
} finally {
reader.close();
}
}
assertEquals("Some keys in no partition.", length, bits.cardinality());
}
}
}
