| Package | Description | 
|---|---|
| org.apache.hadoop.mapred | |
| org.apache.hadoop.mapred.lib | 
| Modifier and Type | Method and Description | 
|---|---|
| Class<? extends Partitioner> | JobConf. getPartitionerClass() | 
| Modifier and Type | Method and Description | 
|---|---|
| static <K extends WritableComparable,V extends Writable> | MapFileOutputFormat. getEntry(org.apache.hadoop.io.MapFile.Reader[] readers,
        Partitioner<K,V> partitioner,
        K key,
        V value)Get an entry from output generated by this class. | 
| Modifier and Type | Method and Description | 
|---|---|
| void | JobConf. setPartitionerClass(Class<? extends Partitioner> theClass) | 
| Modifier and Type | Class and Description | 
|---|---|
| class  | BinaryPartitioner<V>Partition  BinaryComparablekeys using a configurable part of 
 the bytes array returned byBinaryComparable.getBytes(). | 
| class  | HashPartitioner<K2,V2>Partition keys by their  Object.hashCode(). | 
| class  | KeyFieldBasedPartitioner<K2,V2>Defines a way to partition keys based on certain key fields (also see
   KeyFieldBasedComparator. | 
| class  | TotalOrderPartitioner<K,V>Partitioner effecting a total order by reading split points from
 an externally generated source. | 
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