@InterfaceAudience.Public @InterfaceStability.Stable public class KeyFieldBasedPartitioner<K2,V2> extends KeyFieldBasedPartitioner<K2,V2> implements Partitioner<K2,V2>
KeyFieldBasedComparator. The key specification supported is of the form -k pos1[,pos2], where, pos is of the form f[.c][opts], where f is the number of the key field to use, and c is the number of the first character from the beginning of the field. Fields and character posns are numbered starting with 1; a character position of zero in pos2 indicates the field's last character. If '.c' is omitted from pos1, it defaults to 1 (the beginning of the field); if omitted from pos2, it defaults to 0 (the end of the field).
|Constructor and Description|
|Modifier and Type||Method and Description|
Initializes a new instance from a
getConf, getKeyFieldPartitionerOption, getPartition, getPartition, hashCode, setConf, setKeyFieldPartitionerOptions
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
public void configure(JobConf job)
job- the configuration
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