public class AvroReducer<K,V,OUT> extends Configured implements JobConfigurable, Closeable
Applications should subclass this class and pass their subclass to
AvroJob.setReducerClass(JobConf, Class) and perhaps
AvroJob.setCombinerClass(JobConf, Class). Subclasses override
reduce(Object, Iterable, AvroCollector, Reporter).
| Constructor and Description |
|---|
AvroReducer() |
| Modifier and Type | Method and Description |
|---|---|
void |
close()
Subclasses can override this as desired.
|
void |
configure(JobConf jobConf)
Subclasses can override this as desired.
|
void |
reduce(K key,
Iterable<V> values,
AvroCollector<OUT> collector,
Reporter reporter)
Called with all map output values with a given key.
|
getConf, setConfpublic void reduce(K key, Iterable<V> values, AvroCollector<OUT> collector, Reporter reporter) throws IOException
Pair instances.IOExceptionpublic void close()
throws IOException
close in interface Closeableclose in interface AutoCloseableIOExceptionpublic void configure(JobConf jobConf)
configure in interface JobConfigurableCopyright © 2009–2023 The Apache Software Foundation. All rights reserved.