org.apache.hadoop.io.LongWritable#Comparator ( )源码实例Demo

private RawComparator getComparator(TestWithComparator comparator) {
  switch (comparator) {
  case LONG:
    return new LongWritable.Comparator();
  case INT:
    return new IntWritable.Comparator();
  case BYTES:
    return new BytesWritable.Comparator();
  case TEZ_BYTES:
    return new TezBytesComparator();
  case TEXT:
    return new Text.Comparator();
  case CUSTOM:
    return new CustomKey.Comparator();
  default:
    return null;
  }
}
 

public PigLongRawComparator() {
    super(NullableLongWritable.class);
    mWrappedComp = new LongWritable.Comparator();
}