public static Job parseInputAndOutput(Tool tool, Configuration conf, String[] args)
throws IOException {
if (args.length != 2) {
printUsage(tool, "<input> <output>");
return null;
}
Job job = Job.getInstance(conf);
job.setJobName("test");
job.setJarByClass(tool.getClass());
FileInputFormat.addInputPath(job, new Path(args[0]));
FileOutputFormat.setOutputPath(job, new Path(args[1]));
return job;
}
private static int launch(Configuration conf, Tool tool, String[] args) throws Exception {
if (LOG.isDebugEnabled()) {
LOG.debug(
MessageFormat.format(
"Launching application: {0}{1}", //$NON-NLS-1$
tool.getClass().getName(), Arrays.toString(args)));
}
ClassLoader contextClassLoader = switchContextClassLoader(conf.getClassLoader());
try {
return ToolRunner.run(conf, tool, args);
} finally {
switchContextClassLoader(contextClassLoader);
}
}
public static void printUsage(Tool tool, String extraArgsUsage) {
System.err.printf(
"Usage: %s [genericOptions] %s\n\n", tool.getClass().getSimpleName(), extraArgsUsage);
GenericOptionsParser.printGenericCommandUsage(System.err);
}
