List of usage examples for org.apache.hadoop.mapreduce Job setOutputKeyClass
public void setOutputKeyClass(Class<?> theClass) throws IllegalStateException
From source file:com.gsvic.csmr.CSMRBase.java
License:Apache License
public static void StartCSMR() throws IOException, InterruptedException, ClassNotFoundException { Configuration conf = new Configuration(); Job job; job = new Job(conf); job.setJobName("CSMR Cosine Similarity Job"); job.setJarByClass(CSMRBase.class); FileInputFormat.addInputPath(job, new Path(path + "/CSMRPairs/part-r-00000")); FileOutputFormat.setOutputPath(job, new Path(path + "/Results")); job.setMapperClass(Mapper.class); job.setReducerClass(CosineSimilarityReducer.class); job.setInputFormatClass(SequenceFileInputFormat.class); job.setMapOutputKeyClass(Text.class); job.setMapOutputValueClass(VectorArrayWritable.class); job.setOutputKeyClass(Text.class); job.setOutputValueClass(DoubleWritable.class); System.exit(job.waitForCompletion(true) ? 1 : 0); }
From source file:com.hadoop.examples.secondSort.SecondarySort.java
License:Apache License
public static void main(String[] args) throws Exception { // ?hadoop?//from w w w . j av a 2s . co m Configuration conf = new Configuration(); String[] otherArgs = new GenericOptionsParser(conf, args).getRemainingArgs(); if (otherArgs.length != 2) { System.err.println("Usage: secondarysort <in> <out>"); System.exit(2); } // ? Job job = new Job(conf, "secondary sort"); job.setJarByClass(SecondarySort.class); // Mapper job.setMapperClass(MapClass.class); // ???CombinerCombiner<Text, IntWritable>Reduce<IntPair, IntWritable>? //job.setCombinerClass(Reduce.class); // Reducer job.setReducerClass(Reduce.class); // * // *group and partition by the first int in the pair job.setPartitionerClass(FirstPartitioner.class); //setSortComparatorClass()hadoopkey?(?2.Hadoopkey?) //IntPair?compareTo() //job.setSortComparatorClass(cls); // * job.setGroupingComparatorClass(FirstGroupingComparator.class); // map Key // the map output is IntPair, IntWritable job.setMapOutputKeyClass(IntPair.class); // mapValue job.setMapOutputValueClass(IntWritable.class); // rduceKeyTextOutputFormatClassTextOutputFormat // the reduce output is Text, IntWritable job.setOutputKeyClass(Text.class); // rduceValue job.setOutputValueClass(IntWritable.class); FileInputFormat.addInputPath(job, new Path(otherArgs[0])); FileOutputFormat.setOutputPath(job, new Path(otherArgs[1])); // ??job System.exit(job.waitForCompletion(true) ? 0 : 1); }
From source file:com.hadoop.mapreduce.examples.WordCount.java
License:Apache License
public static void main(String[] args) throws Exception { Configuration conf = new Configuration(); conf.set("mapreduce.app-submission.cross-platform", "true"); String ioArgs[] = { "input", "output2" }; String[] otherArgs = new GenericOptionsParser(conf, ioArgs).getRemainingArgs(); if (otherArgs.length < 2) { System.err.println("Usage: wordcount <in> [<in>...] <out>"); System.exit(2);/*from w w w. j a v a 2 s . c o m*/ } //job Job job = Job.getInstance(conf, "word count"); job.setJarByClass(WordCount.class); //map, combine, reduce job.setMapperClass(TokenizerMapper.class); job.setCombinerClass(IntSumReducer.class); job.setReducerClass(IntSumReducer.class); // job.setOutputKeyClass(Text.class); job.setOutputValueClass(IntWritable.class); for (int i = 0; i < otherArgs.length - 1; ++i) { FileInputFormat.addInputPath(job, new Path(otherArgs[i])); } FileOutputFormat.setOutputPath(job, new Path(otherArgs[otherArgs.length - 1])); System.exit(job.waitForCompletion(true) ? 0 : 1); }
From source file:com.hadoop.mapreduce.TestLzoLazyLoading.java
License:Open Source License
private void runWordCount(Configuration cf, boolean compressIn, boolean compressOut) throws IOException, InterruptedException, ClassNotFoundException { Configuration thisConf = new Configuration(cf); if (compressIn) { thisConf.setBoolean("mapred.compression.lzo.test.codec-checked-after-map", true); }//from w ww . jav a 2 s.co m if (compressOut) { thisConf.setBoolean("mapred.compression.lzo.test.codec-checked-after-reduce", true); } Path pathIn = new Path(TEST_ROOT_DIR + "/in"); Path pathOut = new Path(TEST_ROOT_DIR + "/out"); localFs.delete(pathIn, true); localFs.delete(pathOut, true); writeFile(makeFileName("in/part1", compressIn), "this is a test\nof word count test\ntest\n"); writeFile(makeFileName("in/part2", compressIn), "more test"); Job job = new Job(thisConf, "word count"); job.setMapperClass(MyMapper.class); job.setCombinerClass(MyCombiner.class); job.setReducerClass(MyReducer.class); job.setOutputKeyClass(Text.class); job.setOutputValueClass(IntWritable.class); if (compressOut) { FileOutputFormat.setCompressOutput(job, true); FileOutputFormat.setOutputCompressorClass(job, LzoCodec.class); } FileInputFormat.addInputPath(job, pathIn); FileOutputFormat.setOutputPath(job, pathOut); job.submit(); assertEquals("IsLzoChecked (client)?", compressIn, LzoCodec.isNativeLzoChecked()); assertTrue(job.waitForCompletion(false)); String result = readFile(makeFileName("out/part-r-00000", compressOut)); System.out.println(result); assertEquals("a\t1\ncount\t1\nis\t1\nmore\t1\nof\t1\ntest\t4\nthis\t1\nword\t1\n", result); }
From source file:com.hadoop.secondarysort.SecondarySortDESC.java
License:Apache License
public static void main(String[] args) throws Exception { Configuration conf = new Configuration(); String[] otherArgs = new GenericOptionsParser(conf, args).getRemainingArgs(); // if (otherArgs.length != 2) { // System.err.println("Usage: secondarysrot <in> <out>"); // System.exit(2); // }/*from w w w. ja v a 2 s. com*/ // JobConf jobConf = new JobConf(); Job job = new Job(conf, "secondary sort"); job.setJarByClass(SecondarySortDESC.class); job.setMapperClass(MapClass.class); job.setReducerClass(Reduce.class); // group and partition by the first int in the pair job.setPartitionerClass(FirstPartitioner.class); job.setGroupingComparatorClass(FirstGroupingComparator.class); // conf.setClass("mapred.output.key.comparator.class", // KeyComparator.class, RawComparator.class); // job.setSortComparatorClass(SecondGroupingComparator.class); // the map output is IntPair, IntWritable job.setMapOutputKeyClass(IntPair.class); job.setMapOutputValueClass(IntWritable.class); // the reduce output is Text, IntWritable job.setOutputKeyClass(Text.class); job.setOutputValueClass(IntWritable.class); FileInputFormat.addInputPath(job, new Path(inPath)); FileOutputFormat.setOutputPath(job, new Path(outPath)); FileSystem fileSystem = FileSystem.get(conf); if (fileSystem.exists(new Path(outPath))) { fileSystem.delete(new Path(outPath)); } System.exit(job.waitForCompletion(true) ? 0 : 1); }
From source file:com.hhscyber.nl.tweets.hbase2.Hbase2.java
@Override public int run(String[] args) throws Exception { Job client = new Job(getConf(), "hbasetest"); client.setSpeculativeExecution(false); client.setMaxMapAttempts(2);/* ww w .j a va2s. c om*/ client.setJarByClass(Hbase2.class); client.setOutputKeyClass(Text.class); client.setOutputValueClass(Text.class); client.setInputFormatClass(TextInputFormat.class); TextInputFormat.addInputPath(client, new Path("input/1441737001"));//test one folder TextOutputFormat.setOutputPath(client, new Path("output4")); client.setMapperClass(Hbase2Mapper.class); client.setReducerClass(Hbase2Reducer.class); try { client.waitForCompletion(true); } catch (IOException | InterruptedException | ClassNotFoundException e) { System.out.println(e); } return 0; }
From source file:com.hhscyber.nl.tweets.hbasefill.HbaseFill.java
/** * @param args the command line arguments * @throws java.io.IOException/* w ww. java 2s . co m*/ */ public static void main(String[] args) throws IOException { conHbase = HBaseConfiguration.create(); Job client = new Job(conHbase); // new configuration client.setJarByClass(HbaseFill.class); client.setOutputKeyClass(Text.class); client.setOutputValueClass(IntWritable.class); client.setInputFormatClass(TextInputFormat.class); TextInputFormat.addInputPath(client, new Path("input/" + test));//test one folder TextOutputFormat.setOutputPath(client, new Path("output3")); client.setMapperClass(HbaseFillMapper.class); try { client.submit(); } catch (IOException | InterruptedException | ClassNotFoundException e) { e.printStackTrace(); } }
From source file:com.hhscyber.nl.tweets.processtweets.ProcessTweets.java
/** * @param args the command line arguments */// www. j a va2 s . c o m public static void main(String[] args) throws IOException { Job client = new Job(new Configuration()); client.setJarByClass(ProcessTweets.class); client.setOutputKeyClass(Text.class); client.setOutputValueClass(IntWritable.class); client.setInputFormatClass(TextInputFormat.class); TextInputFormat.addInputPath(client, new Path("input_concat"));// TextOutputFormat.setOutputPath(client, new Path("output2")); client.setMapperClass(ProcessTweetsMapper.class); client.setReducerClass(ProcessTweetsReducer.class); client.setCombinerClass(ProcessTweetsReducer.class); try { client.submit(); } catch (Exception e) { e.printStackTrace(); } }
From source file:com.hn.cluster.hadoop.mrs.SecondarySort.java
License:Apache License
public static void main(String[] args) throws Exception { // ?hadoop?/*w ww. j a va 2 s .c om*/ Configuration conf = new Configuration(); // ? Job job = new Job(conf, "secondary sort"); job.setJarByClass(SecondarySort.class); // Mapper job.setMapperClass(MapClass.class); // Reducer job.setReducerClass(Reduce.class); // job.setPartitionerClass(FirstPartitioner.class); // job.setGroupingComparatorClass(FirstGroupingComparator.class); // map Key job.setMapOutputKeyClass(IntPair.class); // mapValue job.setMapOutputValueClass(IntWritable.class); // rduceKeyTextOutputFormatClassTextOutputFormat job.setOutputKeyClass(Text.class); // rduceValue job.setOutputValueClass(IntWritable.class); /** * ?????splites???RecordReder * ??RecordReder?keyvalue * Map<LongWritable, Text> * Mapmap<LongWritable, Text>Mapmap * ?List<IntPair, IntWritable> * map?job.setPartitionerClassList?reducer */ job.setInputFormatClass(TextInputFormat.class); // ??RecordWriter? job.setOutputFormatClass(TextOutputFormat.class); // hdfs FileInputFormat.addInputPath(job, new Path("hdfs://192.1168.1.12:9000/input/input/soso.txt")); // hdfs FileOutputFormat.setOutputPath(job, new Path("hdfs://192.1168.1.12:9000/output/sort/")); // ??job System.exit(job.waitForCompletion(true) ? 0 : 1); }
From source file:com.hortonworks.mapreduce.URLCount.java
License:Apache License
@Override public int run(String[] args) throws Exception { Configuration conf = this.getConf(); conf.set("mapreduce.input.keyvaluelinerecordreader.key.value.separator", " "); Job job = Job.getInstance(conf, "URLCount"); job.setJarByClass(getClass());//from w w w . j ava 2s .c o m job.setInputFormatClass(KeyValueTextInputFormat.class); job.setOutputFormatClass(TextOutputFormat.class); job.setMapperClass(URLCountM.class); job.setReducerClass(URLCountR.class); job.setMapOutputKeyClass(Text.class); job.setMapOutputValueClass(IntWritable.class); job.setOutputKeyClass(IntWritable.class); job.setOutputValueClass(Text.class); FileInputFormat.addInputPath(job, new Path(args[0])); FileOutputFormat.setOutputPath(job, new Path(args[1])); return (job.waitForCompletion(true) == true ? 0 : -1); }