@Override
public int run(final String[] args) throws Exception {
createTable();
final Configuration config = getConf();
final Pipeline pipeline =
new MRPipeline(CrunchStockDateInserter.class, "PipelineWithFilterFn", config);
PCollection<String> lines = pipeline.readTextFile(Constants.HDFS_INPUT_PATH + "/2004_2014.csv");
PCollection<Put> resultPut = CrunchUtils.returnDates(lines);
System.out.println("********** size ************ : " + resultPut.getSize());
pipeline.write(resultPut, new HBaseTarget(Constants.STOCK_DATES_TABLE));
PipelineResult result = pipeline.done();
return result.succeeded() ? 0 : 1;
}
public int run(String[] args) throws Exception {
Pipeline pipeline = new MRPipeline(SecondarySortingExample.class);
// Read input
PCollection<String> lines = pipeline.readTextFile(args[0]);
// Split each line and count them
PTable<String, Long> wordcount = lines.parallelDo(new Tokenizer(), Writables.strings()).count();
// Sort
PCollection<Pair<String, Long>> sorted =
Sort.sortPairs(wordcount, ColumnOrder.by(1, Sort.Order.DESCENDING));
// Write the output
sorted.write(To.textFile(args[0]));
// Kick off execution
PipelineResult result = pipeline.done();
return result.succeeded() ? 0 : 1;
}
@Override
public int execute(Configuration conf) throws Exception {
Pipeline p = pipelineParams.create(SampleCommand.class, conf);
PCollection<Record> elements = inputParams.getRecords(p);
if (sampleSize > 0 && samplingProbability > 0.0) {
throw new IllegalArgumentException("--size and --prob are mutually exclusive options.");
}
PCollection<Record> sample;
if (sampleSize > 0) {
sample = ReservoirSampling.sample(elements, sampleSize);
} else if (samplingProbability > 0.0 && samplingProbability < 1.0) {
sample = Sample.sample(elements, samplingProbability);
} else {
throw new IllegalArgumentException(
String.format(
"Invalid input args: sample size = %d, sample prob = %.4f",
sampleSize, samplingProbability));
}
outputParams.write(sample, sampleFile);
PipelineResult pr = p.done();
return pr.succeeded() ? 0 : 1;
}