List of usage examples for org.apache.hadoop.mapred JobConf setMapRunnerClass
public void setMapRunnerClass(Class<? extends MapRunnable> theClass)
From source file:WikipediaForwardIndexBuilder.java
License:Apache License
@SuppressWarnings("static-access") @Override/* ww w .j a va 2 s. com*/ public int run(String[] args) throws Exception { Options options = new Options(); options.addOption(OptionBuilder.withArgName("path").hasArg().withDescription("input").create(INPUT_OPTION)); options.addOption( OptionBuilder.withArgName("path").hasArg().withDescription("index file").create(INDEX_FILE_OPTION)); options.addOption(OptionBuilder.withArgName("en|sv|de|cs|es|zh|ar|tr").hasArg() .withDescription("two-letter language code").create(LANGUAGE_OPTION)); CommandLine cmdline; CommandLineParser parser = new GnuParser(); try { cmdline = parser.parse(options, args); } catch (ParseException exp) { System.err.println("Error parsing command line: " + exp.getMessage()); return -1; } if (!cmdline.hasOption(INPUT_OPTION) || !cmdline.hasOption(INDEX_FILE_OPTION)) { HelpFormatter formatter = new HelpFormatter(); formatter.printHelp(this.getClass().getName(), options); ToolRunner.printGenericCommandUsage(System.out); return -1; } Path inputPath = new Path(cmdline.getOptionValue(INPUT_OPTION)); String indexFile = cmdline.getOptionValue(INDEX_FILE_OPTION); String tmpPath = "tmp-" + WikipediaForwardIndexBuilder.class.getSimpleName() + "-" + RANDOM.nextInt(10000); if (!inputPath.isAbsolute()) { System.err.println("Error: " + INPUT_OPTION + " must be an absolute path!"); return -1; } String language = null; if (cmdline.hasOption(LANGUAGE_OPTION)) { language = cmdline.getOptionValue(LANGUAGE_OPTION); if (language.length() != 2) { System.err.println("Error: \"" + language + "\" unknown language!"); return -1; } } JobConf conf = new JobConf(getConf(), WikipediaForwardIndexBuilder.class); FileSystem fs = FileSystem.get(conf); LOG.info("Tool name: " + this.getClass().getName()); LOG.info(" - input path: " + inputPath); LOG.info(" - index file: " + indexFile); LOG.info(" - language: " + language); LOG.info("Note: This tool only works on block-compressed SequenceFiles!"); conf.setJobName(String.format("BuildWikipediaForwardIndex[%s: %s, %s: %s, %s: %s]", INPUT_OPTION, inputPath, INDEX_FILE_OPTION, indexFile, LANGUAGE_OPTION, language)); conf.setNumReduceTasks(1); FileInputFormat.setInputPaths(conf, inputPath); FileOutputFormat.setOutputPath(conf, new Path(tmpPath)); FileOutputFormat.setCompressOutput(conf, false); if (language != null) { conf.set("wiki.language", language); } conf.setInputFormat(NoSplitSequenceFileInputFormat.class); conf.setOutputKeyClass(IntWritable.class); conf.setOutputValueClass(Text.class); conf.setMapRunnerClass(MyMapRunner.class); conf.setReducerClass(IdentityReducer.class); // Delete the output directory if it exists already. fs.delete(new Path(tmpPath), true); RunningJob job = JobClient.runJob(conf); Counters counters = job.getCounters(); int blocks = (int) counters.getCounter(Blocks.Total); LOG.info("number of blocks: " + blocks); LOG.info("Writing index file..."); LineReader reader = new LineReader(fs.open(new Path(tmpPath + "/part-00000"))); FSDataOutputStream out = fs.create(new Path(indexFile), true); out.writeUTF(edu.umd.cloud9.collection.wikipedia.WikipediaForwardIndex.class.getCanonicalName()); out.writeUTF(inputPath.toString()); out.writeInt(blocks); int cnt = 0; Text line = new Text(); while (reader.readLine(line) > 0) { String[] arr = line.toString().split("\\s+"); int docno = Integer.parseInt(arr[0]); int offset = Integer.parseInt(arr[1]); short fileno = Short.parseShort(arr[2]); out.writeInt(docno); out.writeInt(offset); out.writeShort(fileno); cnt++; if (cnt % 100000 == 0) { LOG.info(cnt + " blocks written"); } } reader.close(); out.close(); if (cnt != blocks) { throw new RuntimeException("Error: mismatch in block count!"); } // Clean up. fs.delete(new Path(tmpPath), true); return 0; }
From source file:cascading.flow.hadoop.HadoopFlowStep.java
License:Open Source License
public JobConf createInitializedConfig(FlowProcess<JobConf> flowProcess, JobConf parentConfig) { JobConf conf = parentConfig == null ? new JobConf() : HadoopUtil.copyJobConf(parentConfig); // disable warning conf.setBoolean("mapred.used.genericoptionsparser", true); conf.setJobName(getStepDisplayName(conf.getInt("cascading.display.id.truncate", Util.ID_LENGTH))); conf.setOutputKeyClass(Tuple.class); conf.setOutputValueClass(Tuple.class); conf.setMapRunnerClass(FlowMapper.class); conf.setReducerClass(FlowReducer.class); // set for use by the shuffling phase TupleSerialization.setSerializations(conf); initFromSources(flowProcess, conf);//ww w.j a v a2 s . c o m initFromSink(flowProcess, conf); initFromTraps(flowProcess, conf); initFromStepConfigDef(conf); int numSinkParts = getSink().getScheme().getNumSinkParts(); if (numSinkParts != 0) { // if no reducer, set num map tasks to control parts if (getGroup() != null) conf.setNumReduceTasks(numSinkParts); else conf.setNumMapTasks(numSinkParts); } else if (getGroup() != null) { int gatherPartitions = conf.getNumReduceTasks(); if (gatherPartitions == 0) gatherPartitions = conf.getInt(FlowRuntimeProps.GATHER_PARTITIONS, 0); if (gatherPartitions == 0) throw new FlowException(getName(), "a default number of gather partitions must be set, see FlowRuntimeProps"); conf.setNumReduceTasks(gatherPartitions); } conf.setOutputKeyComparatorClass(TupleComparator.class); if (getGroup() == null) { conf.setNumReduceTasks(0); // disable reducers } else { // must set map output defaults when performing a reduce conf.setMapOutputKeyClass(Tuple.class); conf.setMapOutputValueClass(Tuple.class); conf.setPartitionerClass(GroupingPartitioner.class); // handles the case the groupby sort should be reversed if (getGroup().isSortReversed()) conf.setOutputKeyComparatorClass(ReverseTupleComparator.class); addComparators(conf, "cascading.group.comparator", getGroup().getKeySelectors(), this, getGroup()); if (getGroup().isGroupBy()) addComparators(conf, "cascading.sort.comparator", getGroup().getSortingSelectors(), this, getGroup()); if (!getGroup().isGroupBy()) { conf.setPartitionerClass(CoGroupingPartitioner.class); conf.setMapOutputKeyClass(IndexTuple.class); // allows groups to be sorted by index conf.setMapOutputValueClass(IndexTuple.class); conf.setOutputKeyComparatorClass(IndexTupleCoGroupingComparator.class); // sorts by group, then by index conf.setOutputValueGroupingComparator(CoGroupingComparator.class); } if (getGroup().isSorted()) { conf.setPartitionerClass(GroupingSortingPartitioner.class); conf.setMapOutputKeyClass(TuplePair.class); if (getGroup().isSortReversed()) conf.setOutputKeyComparatorClass(ReverseGroupingSortingComparator.class); else conf.setOutputKeyComparatorClass(GroupingSortingComparator.class); // no need to supply a reverse comparator, only equality is checked conf.setOutputValueGroupingComparator(GroupingComparator.class); } } // perform last so init above will pass to tasks String versionString = Version.getRelease(); if (versionString != null) conf.set("cascading.version", versionString); conf.set(CASCADING_FLOW_STEP_ID, getID()); conf.set("cascading.flow.step.num", Integer.toString(getOrdinal())); HadoopUtil.setIsInflow(conf); Iterator<FlowNode> iterator = getFlowNodeGraph().getTopologicalIterator(); String mapState = pack(iterator.next(), conf); String reduceState = pack(iterator.hasNext() ? iterator.next() : null, conf); // hadoop 20.2 doesn't like dist cache when using local mode int maxSize = Short.MAX_VALUE; int length = mapState.length() + reduceState.length(); if (isHadoopLocalMode(conf) || length < maxSize) // seems safe { conf.set("cascading.flow.step.node.map", mapState); if (!Util.isEmpty(reduceState)) conf.set("cascading.flow.step.node.reduce", reduceState); } else { conf.set("cascading.flow.step.node.map.path", HadoopMRUtil.writeStateToDistCache(conf, getID(), "map", mapState)); if (!Util.isEmpty(reduceState)) conf.set("cascading.flow.step.node.reduce.path", HadoopMRUtil.writeStateToDistCache(conf, getID(), "reduce", reduceState)); } return conf; }
From source file:cn.edu.hfut.dmic.webcollectorcluster.fetcher.Fetcher.java
@Override public int run(String[] args) throws Exception { JobConf jc = new JobConf(getConf()); jc.setJarByClass(Fetcher.class); jc.setInputFormat(SequenceFileInputFormat.class); Path input = new Path(args[0], "current"); Path output = new Path(args[1]); Configuration conf = CrawlerConfiguration.create(); FileSystem fs = output.getFileSystem(conf); if (fs.exists(output)) { fs.delete(output);/*from w w w. ja va2s . c o m*/ } FileInputFormat.addInputPath(jc, input); FileOutputFormat.setOutputPath(jc, output); jc.setMapOutputKeyClass(Text.class); jc.setMapOutputValueClass(WebWritable.class); jc.setMapRunnerClass(Fetcher.class); jc.setOutputFormat(FetcherOutputFormat.class); JobClient.runJob(jc); return 0; }
From source file:crunch.MaxTemperature.java
License:Apache License
@Override
public int run(String[] args) throws IOException {
JobConf conf = JobBuilder.parseInputAndOutput(this, getConf(), args);
if (conf == null) {
return -1;
}//from w w w . j a v a2 s .co m
/*[*/conf.setInputFormat(TextInputFormat.class);
conf.setNumMapTasks(1);
conf.setMapperClass(IdentityMapper.class);
conf.setMapRunnerClass(MapRunner.class);
conf.setMapOutputKeyClass(LongWritable.class);
conf.setMapOutputValueClass(Text.class);
conf.setPartitionerClass(HashPartitioner.class);
conf.setNumReduceTasks(1);
conf.setReducerClass(IdentityReducer.class);
conf.setOutputKeyClass(LongWritable.class);
conf.setOutputValueClass(Text.class);
conf.setOutputFormat(TextOutputFormat.class);/*]*/
JobClient.runJob(conf);
return 0;
}
From source file:edu.stolaf.cs.wmrserver.streaming.StreamJob.java
License:Apache License
public static void setStreamMapper(JobConf conf, String mapCommand) { conf.setMapperClass(PipeMapper.class); conf.setMapRunnerClass(PipeMapRunner.class); try {/* w w w. j a v a 2 s . c o m*/ conf.set("stream.map.streamprocessor", URLEncoder.encode(mapCommand, "UTF-8")); } catch (UnsupportedEncodingException ex) { // This is VERY likely to happen. Especially since the ENTIRE FREAKING // STRING IMPLEMENTATION is based on UTF-8. Thanks, Java. throw new RuntimeException("The sky is falling! Java doesn't support UTF-8."); } }
From source file:edu.ucsb.cs.hybrid.HybridDriver.java
License:Apache License
/** * @param job : passed by reference to set its mapper class. *//*w w w . java2 s . c o m*/ public static void setMapperAndRunner(JobConf job) { int numSplits = job.getInt(Config.NUMBER_SPLITS_PROPERTY, Config.NUMBER_SPLITS_VALUE); int PSSChoice = job.getInt(Config.BLOCK_CHOICE_PROPERTY, Config.BLOCK_CHOICE_VALUE);//1,2 String name = "PSS"; if (numSplits > 1) { //check can I set # splits for runner here? job.setMapRunnerClass(MultipleS_Runner.class); if (job.getBoolean(Config.MULTI_THREADS_PROPERTY, Config.MULTI_THREADS_VALUE)) { // threads testing job.setMapperClass(PSS1_Threaded_Mapper.class);// naming } else if (PSSChoice == 1) { name += "1"; job.setMapperClass(PSS1_Mapper.class); } else if (PSSChoice == 2) { name += "2"; job.setMapperClass(PSS2_Mapper.class);// MultipleS_Block1_Mapper } else ;//For future implementations } else { job.setMapRunnerClass(SingleS_Runner.class); if (job.getBoolean(Config.MULTI_THREADS_PROPERTY, Config.MULTI_THREADS_VALUE)) // threads throw new RuntimeException( "ERROR: Single S with multithreads! Set hybrid.threads.property to false."); if (PSSChoice == 1) { job.setMapperClass(PSS_Mapper.class); if (job.getBoolean(Config.BAYADRO_SKIP_PROPERTY, Config.BAYADRO_SKIP_VALUE)) { name += "/Bayardo_Dynamic_filter"; job.setMapperClass(PSS_Bayardo_Mapper.class);//PSS+Bayardo WWW'07 } } else if (PSSChoice == 2) { name += "2/SingleS"; job.setMapperClass(PSS2_SingleS_Mapper.class); } else job.setMapperClass(PSS3_SingleS_Mapper.class); //what is this? } job.setJobName(name); }
From source file:edu.umd.cloud9.collection.clue.ClueWarcForwardIndexBuilder.java
License:Apache License
/** * Runs this tool./*www . j a v a 2 s. c o m*/ */ @SuppressWarnings("static-access") public int run(String[] args) throws Exception { Options options = new Options(); options.addOption(OptionBuilder.withArgName("path").hasArg() .withDescription("(required) collection path (must be block-compressed SequenceFiles)") .create(COLLECTION_OPTION)); options.addOption(OptionBuilder.withArgName("path").hasArg().withDescription("(required) output index path") .create(INDEX_OPTION)); CommandLine cmdline; CommandLineParser parser = new GnuParser(); try { cmdline = parser.parse(options, args); } catch (ParseException exp) { System.err.println("Error parsing command line: " + exp.getMessage()); return -1; } if (!cmdline.hasOption(COLLECTION_OPTION) || !cmdline.hasOption(INDEX_OPTION)) { HelpFormatter formatter = new HelpFormatter(); formatter.printHelp(this.getClass().getName(), options); ToolRunner.printGenericCommandUsage(System.out); return -1; } JobConf conf = new JobConf(getConf(), ClueWarcForwardIndexBuilder.class); FileSystem fs = FileSystem.get(conf); String collectionPath = cmdline.getOptionValue(COLLECTION_OPTION); String indexFile = cmdline.getOptionValue(INDEX_OPTION); LOG.info("Tool name: " + ClueWarcForwardIndexBuilder.class.getSimpleName()); LOG.info(" - collection path: " + collectionPath); LOG.info(" - index file: " + indexFile); LOG.info("Note: This tool only works on block-compressed SequenceFiles!"); Random random = new Random(); Path outputPath = new Path( "tmp-" + ClueWarcForwardIndexBuilder.class.getSimpleName() + "-" + random.nextInt(10000)); conf.setJobName(ClueWarcForwardIndexBuilder.class.getSimpleName() + ":" + collectionPath); conf.setNumMapTasks(100); conf.setNumReduceTasks(1); // Note, we have to add the files one by one, otherwise, SequenceFileInputFormat // thinks its a MapFile. for (FileStatus status : fs.listStatus(new Path(collectionPath))) { FileInputFormat.addInputPath(conf, status.getPath()); } FileOutputFormat.setOutputPath(conf, outputPath); FileOutputFormat.setCompressOutput(conf, false); conf.setInputFormat(NoSplitSequenceFileInputFormat.class); conf.setOutputKeyClass(IntWritable.class); conf.setOutputValueClass(Text.class); conf.setMapRunnerClass(MyMapRunner.class); conf.setReducerClass(IdentityReducer.class); // delete the output directory if it exists already fs.delete(outputPath, true); RunningJob job = JobClient.runJob(conf); Counters counters = job.getCounters(); int blocks = (int) counters.findCounter(Blocks.Total).getCounter(); LOG.info("number of blocks: " + blocks); LOG.info("Writing index file..."); LineReader reader = new LineReader(fs.open(new Path(outputPath + "/part-00000"))); FSDataOutputStream out = fs.create(new Path(indexFile), true); out.writeUTF(ClueWarcForwardIndex.class.getCanonicalName()); out.writeUTF(collectionPath); out.writeInt(blocks); int cnt = 0; Text line = new Text(); while (reader.readLine(line) > 0) { String[] arr = line.toString().split("\\s+"); int docno = Integer.parseInt(arr[0]); int offset = Integer.parseInt(arr[1]); short fileno = Short.parseShort(arr[2]); out.writeInt(docno); out.writeInt(offset); out.writeShort(fileno); cnt++; if (cnt % 100000 == 0) { LOG.info(cnt + " blocks written"); } } reader.close(); out.close(); if (cnt != blocks) { throw new RuntimeException("Error: mismatch in block count!"); } fs.delete(outputPath, true); return 0; }
From source file:edu.umd.cloud9.collection.wikipedia.BuildWikipediaForwardIndex.java
License:Apache License
@SuppressWarnings("static-access") @Override/*w ww .j a v a 2 s .c om*/ public int run(String[] args) throws Exception { Options options = new Options(); options.addOption(OptionBuilder.withArgName("path").hasArg().withDescription("input").create(INPUT_OPTION)); options.addOption(OptionBuilder.withArgName("path").hasArg().withDescription("tmp output directory") .create(OUTPUT_OPTION)); options.addOption( OptionBuilder.withArgName("path").hasArg().withDescription("index file").create(INDEX_FILE_OPTION)); options.addOption(OptionBuilder.withArgName("en|sv|de|cs|es|zh|ar|tr").hasArg() .withDescription("two-letter language code").create(LANGUAGE_OPTION)); CommandLine cmdline; CommandLineParser parser = new GnuParser(); try { cmdline = parser.parse(options, args); } catch (ParseException exp) { System.err.println("Error parsing command line: " + exp.getMessage()); return -1; } if (!cmdline.hasOption(INPUT_OPTION) || !cmdline.hasOption(OUTPUT_OPTION) || !cmdline.hasOption(INDEX_FILE_OPTION)) { HelpFormatter formatter = new HelpFormatter(); formatter.printHelp(this.getClass().getName(), options); ToolRunner.printGenericCommandUsage(System.out); return -1; } Path inputPath = new Path(cmdline.getOptionValue(INPUT_OPTION)); String outputPath = cmdline.getOptionValue(OUTPUT_OPTION); String indexFile = cmdline.getOptionValue(INDEX_FILE_OPTION); if (!inputPath.isAbsolute()) { System.err.println("Error: " + INPUT_OPTION + " must be an absolute path!"); return -1; } String language = null; if (cmdline.hasOption(LANGUAGE_OPTION)) { language = cmdline.getOptionValue(LANGUAGE_OPTION); if (language.length() != 2) { System.err.println("Error: \"" + language + "\" unknown language!"); return -1; } } JobConf conf = new JobConf(getConf(), BuildWikipediaForwardIndex.class); FileSystem fs = FileSystem.get(conf); LOG.info("Tool name: " + this.getClass().getName()); LOG.info(" - input path: " + inputPath); LOG.info(" - output path: " + outputPath); LOG.info(" - index file: " + indexFile); LOG.info("Note: This tool only works on block-compressed SequenceFiles!"); LOG.info(" - language: " + language); conf.setJobName(String.format("BuildWikipediaForwardIndex[%s: %s, %s: %s, %s: %s]", INPUT_OPTION, inputPath, INDEX_FILE_OPTION, indexFile, LANGUAGE_OPTION, language)); conf.setNumReduceTasks(1); FileInputFormat.setInputPaths(conf, inputPath); FileOutputFormat.setOutputPath(conf, new Path(outputPath)); FileOutputFormat.setCompressOutput(conf, false); if (language != null) { conf.set("wiki.language", language); } conf.setInputFormat(NoSplitSequenceFileInputFormat.class); conf.setOutputKeyClass(IntWritable.class); conf.setOutputValueClass(Text.class); conf.setMapRunnerClass(MyMapRunner.class); conf.setReducerClass(IdentityReducer.class); // delete the output directory if it exists already fs.delete(new Path(outputPath), true); RunningJob job = JobClient.runJob(conf); Counters counters = job.getCounters(); int blocks = (int) counters.getCounter(Blocks.Total); LOG.info("number of blocks: " + blocks); LOG.info("Writing index file..."); LineReader reader = new LineReader(fs.open(new Path(outputPath + "/part-00000"))); FSDataOutputStream out = fs.create(new Path(indexFile), true); out.writeUTF("edu.umd.cloud9.collection.wikipedia.WikipediaForwardIndex"); out.writeUTF(inputPath.toString()); out.writeInt(blocks); int cnt = 0; Text line = new Text(); while (reader.readLine(line) > 0) { String[] arr = line.toString().split("\\s+"); int docno = Integer.parseInt(arr[0]); int offset = Integer.parseInt(arr[1]); short fileno = Short.parseShort(arr[2]); out.writeInt(docno); out.writeInt(offset); out.writeShort(fileno); cnt++; if (cnt % 100000 == 0) { LOG.info(cnt + " blocks written"); } } reader.close(); out.close(); if (cnt != blocks) { throw new RuntimeException("Error: mismatch in block count!"); } return 0; }
From source file:edu.umd.cloud9.collection.wikipedia.WikipediaForwardIndexBuilder.java
License:Apache License
@SuppressWarnings("static-access") @Override//w ww . j a va2 s .co m public int run(String[] args) throws Exception { Options options = new Options(); options.addOption(OptionBuilder.withArgName("path").hasArg().withDescription("input").create(INPUT_OPTION)); options.addOption( OptionBuilder.withArgName("path").hasArg().withDescription("index file").create(INDEX_FILE_OPTION)); options.addOption(OptionBuilder .withArgName("en|sv|nl|de|fr|ru|it|es|vi|pl|ja|pt|zh|uk|ca|fa|no|fi|id|ar|sr|ko|hi|zh_yue|cs|tr") .hasArg().withDescription("two-letter or six-letter language code").create(LANGUAGE_OPTION)); CommandLine cmdline; CommandLineParser parser = new GnuParser(); try { cmdline = parser.parse(options, args); } catch (ParseException exp) { System.err.println("Error parsing command line: " + exp.getMessage()); return -1; } if (!cmdline.hasOption(INPUT_OPTION) || !cmdline.hasOption(INDEX_FILE_OPTION)) { HelpFormatter formatter = new HelpFormatter(); formatter.printHelp(this.getClass().getName(), options); ToolRunner.printGenericCommandUsage(System.out); return -1; } Path inputPath = new Path(cmdline.getOptionValue(INPUT_OPTION)); String indexFile = cmdline.getOptionValue(INDEX_FILE_OPTION); String tmpPath = "tmp-" + WikipediaForwardIndexBuilder.class.getSimpleName() + "-" + RANDOM.nextInt(10000); if (!inputPath.isAbsolute()) { System.err.println("Error: " + INPUT_OPTION + " must be an absolute path!"); return -1; } String language = null; if (cmdline.hasOption(LANGUAGE_OPTION)) { language = cmdline.getOptionValue(LANGUAGE_OPTION); if (!(language.length() == 2 || language.length() == 6)) { System.err.println("Error: \"" + language + "\" unknown language!"); return -1; } } JobConf conf = new JobConf(getConf(), WikipediaForwardIndexBuilder.class); FileSystem fs = FileSystem.get(conf); LOG.info("Tool name: " + this.getClass().getName()); LOG.info(" - input path: " + inputPath); LOG.info(" - index file: " + indexFile); LOG.info(" - language: " + language); LOG.info("Note: This tool only works on block-compressed SequenceFiles!"); conf.setJobName(String.format("BuildWikipediaForwardIndex[%s: %s, %s: %s, %s: %s]", INPUT_OPTION, inputPath, INDEX_FILE_OPTION, indexFile, LANGUAGE_OPTION, language)); conf.setNumReduceTasks(1); FileInputFormat.setInputPaths(conf, inputPath); FileOutputFormat.setOutputPath(conf, new Path(tmpPath)); FileOutputFormat.setCompressOutput(conf, false); if (language != null) { conf.set("wiki.language", language); } conf.setInputFormat(NoSplitSequenceFileInputFormat.class); conf.setOutputKeyClass(IntWritable.class); conf.setOutputValueClass(Text.class); conf.setMapRunnerClass(MyMapRunner.class); conf.setReducerClass(IdentityReducer.class); // Delete the output directory if it exists already. fs.delete(new Path(tmpPath), true); RunningJob job = JobClient.runJob(conf); Counters counters = job.getCounters(); int blocks = (int) counters.getCounter(Blocks.Total); LOG.info("number of blocks: " + blocks); LOG.info("Writing index file..."); LineReader reader = new LineReader(fs.open(new Path(tmpPath + "/part-00000"))); FSDataOutputStream out = fs.create(new Path(indexFile), true); out.writeUTF(edu.umd.cloud9.collection.wikipedia.WikipediaForwardIndex.class.getCanonicalName()); out.writeUTF(inputPath.toString()); out.writeInt(blocks); int cnt = 0; Text line = new Text(); while (reader.readLine(line) > 0) { String[] arr = line.toString().split("\\s+"); int docno = Integer.parseInt(arr[0]); int offset = Integer.parseInt(arr[1]); short fileno = Short.parseShort(arr[2]); out.writeInt(docno); out.writeInt(offset); out.writeShort(fileno); cnt++; if (cnt % 100000 == 0) { LOG.info(cnt + " blocks written"); } } reader.close(); out.close(); if (cnt != blocks) { throw new RuntimeException("Error: mismatch in block count!"); } // Clean up. fs.delete(new Path(tmpPath), true); return 0; }
From source file:edu.umd.cloud9.webgraph.driver.BuildAnchorTextForwardIndex.java
License:Apache License
/** * Runs this tool.// ww w .j a va 2 s. c o m */ public int run(String[] args) throws Exception { if (args.length != 3) { printUsage(); return -1; } JobConf conf = new JobConf(getConf()); FileSystem fs = FileSystem.get(conf); String collectionPath = args[0]; String outputPath = args[1]; String indexFile = args[2]; LOG.info("Tool name: BuildAnchorTextForwardIndex"); LOG.info(" - collection path: " + collectionPath); LOG.info(" - output path: " + outputPath); LOG.info(" - index file: " + indexFile); LOG.info("Note: This tool only works on block-compressed SequenceFiles!"); conf.set("mapred.child.java.opts", "-Xmx2048m"); conf.setJobName("BuildAnchorTextForwardIndex"); conf.setNumMapTasks(100); conf.setNumReduceTasks(1); FileInputFormat.setInputPaths(conf, new Path(collectionPath)); FileOutputFormat.setOutputPath(conf, new Path(outputPath)); FileOutputFormat.setCompressOutput(conf, false); conf.setInputFormat(NoSplitSequenceFileInputFormat.class); conf.setOutputKeyClass(IntWritable.class); conf.setOutputValueClass(Text.class); conf.setMapRunnerClass(MyMapRunner.class); conf.setReducerClass(IdentityReducer.class); // delete the output directory if it exists already fs.delete(new Path(outputPath), true); RunningJob job = JobClient.runJob(conf); Counters counters = job.getCounters(); int blocks = (int) counters.findCounter(Blocks.Total).getCounter(); LOG.info("number of blocks: " + blocks); LOG.info("Writing index file..."); LineReader reader = new LineReader(fs.open(new Path(outputPath + "/part-00000"))); FSDataOutputStream out = fs.create(new Path(indexFile), true); out.writeUTF(IndexableAnchorTextForwardIndex.class.getName()); out.writeUTF(collectionPath); out.writeInt(blocks); int cnt = 0; Text line = new Text(); while (reader.readLine(line) > 0) { String[] arr = line.toString().split("\\s+"); int docno = Integer.parseInt(arr[0]); int offset = Integer.parseInt(arr[1]); short fileno = Short.parseShort(arr[2]); out.writeInt(docno); out.writeInt(offset); out.writeShort(fileno); cnt++; if (cnt % 1000 == 0) { LOG.info(cnt + " blocks written"); } } reader.close(); out.close(); if (cnt != blocks) { throw new RuntimeException("Error: mismatch in block count!"); } return 0; }