org.apache.flink.streaming.api.windowing.windowbuffer

Class JumpingCountPreReducer<T>

java.lang.Object

org.apache.flink.streaming.api.windowing.windowbuffer.WindowBuffer<T>

org.apache.flink.streaming.api.windowing.windowbuffer.TumblingPreReducer<T>

org.apache.flink.streaming.api.windowing.windowbuffer.JumpingCountPreReducer<T>

All Implemented Interfaces:

Serializable, Cloneable, PreAggregator

public class JumpingCountPreReducer<T>
extends TumblingPreReducer<T>

Non-grouped pre-reducer for jumping time eviction policy (the policies are based on count, and the slide size is larger than the window size).

See Also:

Serialized Form

Field Summary

Fields inherited from class org.apache.flink.streaming.api.windowing.windowbuffer.WindowBuffer

emitEmpty, emitPerGroup, nextID, sequentialID

Constructor Summary

Constructors

Constructor and Description
JumpingCountPreReducer(org.apache.flink.api.common.functions.ReduceFunction<T> reducer, org.apache.flink.api.common.typeutils.TypeSerializer<T> serializer, long countToSkip)

Method Summary

Modifier and Type	Method and Description
void	emitWindow(org.apache.flink.util.Collector<StreamWindow<T>> collector)
void	store(T element)

Methods inherited from class org.apache.flink.streaming.api.windowing.windowbuffer.TumblingPreReducer

clone, emitEmpty, evict, noEvict, toString

Methods inherited from class org.apache.flink.streaming.api.windowing.windowbuffer.WindowBuffer

createEmptyWindow, sequentialID

Methods inherited from class java.lang.Object

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

Constructor Detail

JumpingCountPreReducer

public JumpingCountPreReducer(org.apache.flink.api.common.functions.ReduceFunction<T> reducer,
                              org.apache.flink.api.common.typeutils.TypeSerializer<T> serializer,
                              long countToSkip)

Method Detail

emitWindow

public void emitWindow(org.apache.flink.util.Collector<StreamWindow<T>> collector)

Overrides:

emitWindow in class TumblingPreReducer<T>

store

public void store(T element)
           throws Exception

Overrides:

store in class TumblingPreReducer<T>

Throws:

Exception