content: package hip.ch5.hbase;
  
  import hip.ch3.StockPriceWritable;
  import hip.util.Cli;
  import hip.util.CliCommonOpts;
  import org.apache.hadoop.conf.Configuration;
  import org.apache.hadoop.conf.Configured;
  import org.apache.hadoop.fs.Path;
  import org.apache.hadoop.hbase.client.Put;
  import org.apache.hadoop.hbase.mapreduce.IdentityTableReducer;
  import org.apache.hadoop.hbase.mapreduce.TableMapReduceUtil;
  import org.apache.hadoop.hbase.util.Bytes;
  import org.apache.hadoop.io.LongWritable;
  import org.apache.hadoop.io.Text;
  import org.apache.hadoop.mapreduce.Job;
  import org.apache.hadoop.mapreduce.Mapper;
  import org.apache.hadoop.mapreduce.lib.input.FileInputFormat;
  import org.apache.hadoop.mapreduce.lib.output.FileOutputFormat;
  import org.apache.hadoop.util.Tool;
  import org.apache.hadoop.util.ToolRunner;
  
  import java.io.IOException;
  
  public class HBaseSinkMapReduce extends Configured implements Tool {
  
    public static String STOCKS_IMPORT_TABLE_NAME =
        "stocks_example_import";
  
    public static class MapClass extends Mapper<LongWritable, Text, StockPriceWritable, Put> {
  
      @Override
      protected void map(LongWritable key, Text value,
                         Context context)
          throws IOException, InterruptedException {
  
        StockPriceWritable stock =
            StockPriceWritable.fromLine(value.toString());
  
        byte[] rowkey = Bytes.add(
            Bytes.toBytes(stock.getSymbol()),
            Bytes.toBytes(stock.getDate()));
  
        Put put = new Put(rowkey);
  
        byte[] colValue = Bytes.toBytes(stock.getClose());
        put.add(HBaseWriter.STOCK_DETAILS_COLUMN_FAMILY_AS_BYTES,
            HBaseWriter.STOCK_COLUMN_QUALIFIER_AS_BYTES,
            colValue
        );
        context.write(stock, put);
      }
    }
  
    /**
     * Main entry point for the example.
     *
     * @param args arguments
     * @throws Exception when something goes wrong
     */
    public static void main(final String[] args) throws Exception {
      int res = ToolRunner.run(new Configuration(), new HBaseSinkMapReduce(), args);
      System.exit(res);
    }
  
    /**
     * 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(CliCommonOpts.MrIoOpts.values()).build();
      int result = cli.runCmd();
  
      if (result != 0) {
        return result;
      }
  
      Path inputPath = new Path(cli.getArgValueAsString(CliCommonOpts.MrIoOpts.INPUT));
      Path outputPath = new Path(cli.getArgValueAsString(CliCommonOpts.MrIoOpts.OUTPUT));
  
      Configuration conf = super.getConf();
  
      HBaseWriter.createTableAndColumn(conf, STOCKS_IMPORT_TABLE_NAME,
          HBaseWriter.STOCK_DETAILS_COLUMN_FAMILY_AS_BYTES);
  
      Job job = new Job(conf);
  
      job.setJarByClass(HBaseSinkMapReduce.class);
  
      TableMapReduceUtil.initTableReducerJob(
          STOCKS_IMPORT_TABLE_NAME,
          IdentityTableReducer.class,
          job);
  
      job.setMapperClass(MapClass.class);
  
      job.setMapOutputKeyClass(StockPriceWritable.class);
      job.setMapOutputValueClass(Put.class);
  
      FileInputFormat.setInputPaths(job, inputPath);
      FileOutputFormat.setOutputPath(job, outputPath);
  
      outputPath.getFileSystem(conf).delete(outputPath, true);
  
      if (job.waitForCompletion(true)) {
        return 0;
      }
      return 1;
    }
  }
  