Java Code Examples for org.apache.hadoop.io.LongWritable#compareTo()

The following examples show how to use org.apache.hadoop.io.LongWritable#compareTo() . You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by following the links above each example. You may check out the related API usage on the sidebar.
Example 1
Source File: TestOldCombinerGrouping.java    From hadoop with Apache License 2.0 5 votes vote down vote up 
@Override
public void reduce(Text key, Iterator<LongWritable> values,
    OutputCollector<Text, LongWritable> output, Reporter reporter)
    throws IOException {
  LongWritable maxValue = null;
  while (values.hasNext()) {
    LongWritable value = values.next();
    if (maxValue == null) {
      maxValue = value;
    } else if (value.compareTo(maxValue) > 0) {
      maxValue = value;
    }
  }
  output.collect(key, maxValue);
}
Example 2
Source File: TestNewCombinerGrouping.java    From hadoop with Apache License 2.0 5 votes vote down vote up 
@Override
protected void reduce(Text key, Iterable<LongWritable> values,
    Context context)
    throws IOException, InterruptedException {
  LongWritable maxValue = null;
  for (LongWritable value : values) {
    if (maxValue == null) {
      maxValue = value;
    } else if (value.compareTo(maxValue) > 0) {
      maxValue = value;
    }
  }
  context.write(key, maxValue);
}
Example 3
Source File: TestOldCombinerGrouping.java    From big-c with Apache License 2.0 5 votes vote down vote up 
@Override
public void reduce(Text key, Iterator<LongWritable> values,
    OutputCollector<Text, LongWritable> output, Reporter reporter)
    throws IOException {
  LongWritable maxValue = null;
  while (values.hasNext()) {
    LongWritable value = values.next();
    if (maxValue == null) {
      maxValue = value;
    } else if (value.compareTo(maxValue) > 0) {
      maxValue = value;
    }
  }
  output.collect(key, maxValue);
}
Example 4
Source File: TestNewCombinerGrouping.java    From big-c with Apache License 2.0 5 votes vote down vote up 
@Override
protected void reduce(Text key, Iterable<LongWritable> values,
    Context context)
    throws IOException, InterruptedException {
  LongWritable maxValue = null;
  for (LongWritable value : values) {
    if (maxValue == null) {
      maxValue = value;
    } else if (value.compareTo(maxValue) > 0) {
      maxValue = value;
    }
  }
  context.write(key, maxValue);
}
Example 5
Source File: find_nth_mapper.java    From MLHadoop with Apache License 2.0 5 votes vote down vote up 
public void map(LongWritable key, Text value, Context context) throws IOException, InterruptedException {
	String[] input = value.toString().split("\\t");
	if (!input[0].contains(",")) {
		LongWritable rowKey = new LongWritable(Long.valueOf(input[0]));
		if (rowKey.compareTo(this.nthKey) == 0) {
			this.nthValue = new Text(input[1]);
		}
	}
}