org.apache.hadoop.mapreduce.lib.join.CompositeInputFormat Java Examples
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org.apache.hadoop.mapreduce.lib.join.CompositeInputFormat.
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Example #1
Source File: CompositeJoin.java From hiped2 with Apache License 2.0 | 5 votes |
/** * The MapReduce driver - setup and launch the job. * * @param args the command-line arguments * @return the process exit code * @throws Exception if something goes wrong */ public int run(final String[] args) throws Exception { Cli cli = Cli.builder().setArgs(args).addOptions(Options.values()).build(); int result = cli.runCmd(); if (result != 0) { return result; } Path usersPath = new Path(cli.getArgValueAsString(Options.USERS)); Path userLogsPath = new Path(cli.getArgValueAsString(Options.USER_LOGS)); Path outputPath = new Path(cli.getArgValueAsString(Options.OUTPUT)); Configuration conf = super.getConf(); Job job = new Job(conf); job.setJarByClass(CompositeJoin.class); job.setMapperClass(JoinMap.class); job.setInputFormatClass(CompositeInputFormat.class); job.getConfiguration().set(CompositeInputFormat.JOIN_EXPR, CompositeInputFormat.compose("inner", KeyValueTextInputFormat.class, usersPath, userLogsPath) ); job.setNumReduceTasks(0); FileInputFormat.setInputPaths(job, userLogsPath); FileOutputFormat.setOutputPath(job, outputPath); return job.waitForCompletion(true) ? 0 : 1; }