org.apache.flink.hadoopcompatibility.mapred.record.example

Class WordCount.CountWords

java.lang.Object

org.apache.flink.api.common.functions.AbstractRichFunction

org.apache.flink.api.java.record.functions.ReduceFunction

org.apache.flink.hadoopcompatibility.mapred.record.example.WordCount.CountWords

All Implemented Interfaces:

Serializable, org.apache.flink.api.common.functions.Function, org.apache.flink.api.common.functions.RichFunction

Enclosing class:

WordCount

public static class WordCount.CountWords
extends org.apache.flink.api.java.record.functions.ReduceFunction
implements Serializable

Sums up the counts for a certain given key. The counts are assumed to be at position 1 in the record. The other fields are not modified.

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
WordCount.CountWords()

Method Summary

Methods

Modifier and Type	Method and Description
void	combine(Iterator<org.apache.flink.types.Record> records, org.apache.flink.util.Collector<org.apache.flink.types.Record> out)
void	reduce(Iterator<org.apache.flink.types.Record> records, org.apache.flink.util.Collector<org.apache.flink.types.Record> out)

Methods inherited from class org.apache.flink.api.common.functions.AbstractRichFunction

close, getIterationRuntimeContext, getRuntimeContext, open, setRuntimeContext

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

WordCount.CountWords

public WordCount.CountWords()

Method Detail

reduce

public void reduce(Iterator<org.apache.flink.types.Record> records,
          org.apache.flink.util.Collector<org.apache.flink.types.Record> out)
            throws Exception

Specified by:

reduce in class org.apache.flink.api.java.record.functions.ReduceFunction

Throws:

Exception

combine

public void combine(Iterator<org.apache.flink.types.Record> records,
           org.apache.flink.util.Collector<org.apache.flink.types.Record> out)
             throws Exception

Overrides:

combine in class org.apache.flink.api.java.record.functions.ReduceFunction

Throws:

Exception