| Package | Description | 
|---|---|
| org.apache.hadoop.io | Generic i/o code for use when reading and writing data to the network,
to databases, and to files. | 
| org.apache.nutch.crawl | Crawl control code. | 
| Modifier and Type | Class and Description | 
|---|---|
| static class  | BooleanWritable.ComparatorA Comparator optimized for BooleanWritable. | 
| static class  | BytesWritable.ComparatorA Comparator optimized for BytesWritable. | 
| static class  | FloatWritable.ComparatorA Comparator optimized for FloatWritable. | 
| static class  | IntWritable.ComparatorA Comparator optimized for IntWritable. | 
| static class  | LongWritable.ComparatorA Comparator optimized for LongWritable. | 
| static class  | LongWritable.DecreasingComparatorA decreasing Comparator optimized for LongWritable. | 
| static class  | MD5Hash.ComparatorA WritableComparator optimized for MD5Hash keys. | 
| static class  | Text.ComparatorA WritableComparator optimized for Text keys. | 
| Modifier and Type | Method and Description | 
|---|---|
| static WritableComparator | WritableComparator. get(Class c)Get a comparator for a  WritableComparableimplementation. | 
| Modifier and Type | Method and Description | 
|---|---|
| static void | WritableComparator. define(Class c,
      WritableComparator comparator)Register an optimized comparator for a  WritableComparableimplementation. | 
| Modifier and Type | Class and Description | 
|---|---|
| static class  | CrawlDatum.ComparatorA Comparator optimized for CrawlDatum. | 
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