org.apache.pig.backend.hadoop.executionengine.mapReduceLayer
Class PigGenericMapReduce.MapWithComparator
java.lang.Object
PigMapBase
org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.PigGenericMapReduce.MapWithComparator
- Enclosing class:
- PigGenericMapReduce
public static class PigGenericMapReduce.MapWithComparator
- extends PigMapBase
This "specialized" map class is ONLY to be used in pig queries with
order by a udf. A UDF used for comparison in the order by expects
to be handed tuples. Hence this map class ensures that the "key" used
in the order by is wrapped into a tuple (if it isn't already a tuple)
Method Summary |
void |
collect(org.apache.hadoop.mapreduce.Mapper.Context oc,
Tuple tuple)
|
Methods inherited from class java.lang.Object |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
PigGenericMapReduce.MapWithComparator
public PigGenericMapReduce.MapWithComparator()
collect
public void collect(org.apache.hadoop.mapreduce.Mapper.Context oc,
Tuple tuple)
throws InterruptedException,
IOException
- Throws:
InterruptedException
IOException
Copyright © ${year} The Apache Software Foundation