public Job getJob(Configuration conf, String input, String output)
throws TupleMRException, IOException {
FileSystem fs = FileSystem.get(conf);
fs.delete(new Path(output), true);
List<Field> fields = new ArrayList<Field>();
fields.add(Field.create("word", Type.STRING));
fields.add(Field.create("count", Type.INT));
Schema schema = new Schema("schema", fields);
TupleMRBuilder cg = new TupleMRBuilder(conf, "Pangool WordCount");
cg.addIntermediateSchema(schema);
cg.setGroupByFields("word");
cg.setJarByClass(PangoolWordCount.class);
cg.addInput(new Path(input), new HadoopInputFormat(TextInputFormat.class), new Split());
cg.setOutput(
new Path(output), new HadoopOutputFormat(TextOutputFormat.class), Text.class, Text.class);
cg.setTupleReducer(new Count());
cg.setTupleCombiner(new CountCombiner());
return cg.createJob();
}
@Override
public int run(
Path outputPath, Map<String, Path> parsedInputs, Map<String, Object> parsedParameters)
throws Exception {
mr = new TupleMRBuilder(hadoopConf, getName());
mr.setJarByClass(this.getClass());
configure(parsedParameters);
for (Map.Entry<String, RichInput> inputEntry : bindedInputs.entrySet()) {
RichInput input = inputEntry.getValue();
String inputName = inputEntry.getKey();
if (input instanceof HadoopInput) {
HadoopInput hadoopInput = (HadoopInput) input;
mr.addInput(
parsedInputs.get(inputName), hadoopInput.getFormat(), hadoopInput.getProcessor());
for (Schema schema : hadoopInput.getIntermediateSchemas()) {
mr.addIntermediateSchema(schema);
}
} else if (input instanceof TupleInput) {
TupleInput tupleInput = (TupleInput) input;
mr.addTupleInput(parsedInputs.get(inputName), tupleInput.getProcessor());
for (Schema schema : tupleInput.getIntermediateSchemas()) {
mr.addIntermediateSchema(schema);
}
}
}
mr.setTupleReducer(reducer);
if (combiner != null) {
mr.setTupleCombiner(combiner);
}
if (jobOutput instanceof HadoopOutput) {
HadoopOutput hadoopOutput = (HadoopOutput) jobOutput;
mr.setOutput(
outputPath,
hadoopOutput.getOutputFormat(),
hadoopOutput.getKey(),
hadoopOutput.getValue());
} else if (jobOutput instanceof TupleOutput) {
TupleOutput tupleOutput = (TupleOutput) jobOutput;
mr.setTupleOutput(outputPath, tupleOutput.getOutputSchema());
}
for (Map.Entry<String, RichOutput> namedOutputEntry : bindedOutputs.entrySet()) {
RichOutput output = namedOutputEntry.getValue();
String outputName = namedOutputEntry.getKey();
if (output instanceof HadoopOutput) {
HadoopOutput hadoopOutput = (HadoopOutput) output;
mr.addNamedOutput(
outputName,
hadoopOutput.getOutputFormat(),
hadoopOutput.getKey(),
hadoopOutput.getValue());
} else if (output instanceof TupleOutput) {
TupleOutput tupleOutput = (TupleOutput) output;
mr.addNamedTupleOutput(outputName, tupleOutput.getOutputSchema());
}
}
mr.setGroupByFields(groupBy.groupByFields);
if (orderBy != null) {
mr.setOrderBy(orderBy);
}
return executeCoGrouper(mr);
}
