Examples of TaggedMapOutput

org.apache.hadoop.contrib.utils.join.TaggedMapOutput
This abstract class serves as the base class for the values that flow from the mappers to the reducers in a data join job. Typically, in such a job, the mappers will compute the source tag of an input record based on its attributes or based on the file name of the input file. This tag will be used by the reducers to re-group the values of a given key according to their source tags. @author runping

Examples of org.apache.hadoop.contrib.utils.join.TaggedMapOutput

    groupKey = tokens[0];
    return new Text(groupKey);
  }


  protected TaggedMapOutput generateTaggedMapOutput(Writable value) {
    TaggedMapOutput retv = new SampleTaggedMapOutput((Text) value);
    retv.setTag(new Text(this.inputTag));
    return retv;
  }

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Examples of org.apache.hadoop.contrib.utils.join.TaggedMapOutput

      // strip first column as it is the key on which we joined
      String line = ((Text) (((TaggedMapOutput) values[i]).getData())).toString();
      String[] tokens = line.split("\\t", 2);
      joinedStr += tokens[1];
    }
    TaggedMapOutput retv = new SampleTaggedMapOutput(new Text(joinedStr));
    retv.setTag((Text) tags[0]); 
    return retv;
  }

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Examples of org.apache.hadoop.contrib.utils.join.TaggedMapOutput

    groupKey = tokens[0];
    return new Text(groupKey);
  }


  protected TaggedMapOutput generateTaggedMapOutput(Object value) {
    TaggedMapOutput retv = new SampleTaggedMapOutput((Text) value);
    retv.setTag(new Text(this.inputTag));
    return retv;
  }

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