Package org.apache.flink.runtime.state.ttl

Class TtlReduceFunction<T>

java.lang.Object

org.apache.flink.runtime.state.ttl.AbstractTtlDecorator<org.apache.flink.api.common.functions.ReduceFunction<T>>

org.apache.flink.runtime.state.ttl.TtlReduceFunction<T>

Type Parameters:

T - Type of the user value of state with TTL

All Implemented Interfaces:

Serializable, org.apache.flink.api.common.functions.Function, org.apache.flink.api.common.functions.ReduceFunction<TtlValue<T>>

public class TtlReduceFunction<T>
extends AbstractTtlDecorator<org.apache.flink.api.common.functions.ReduceFunction<T>>
implements org.apache.flink.api.common.functions.ReduceFunction<TtlValue<T>>

This class wraps reducing function with TTL logic.

See Also:

• Serialized Form

Field Summary

Fields inherited from class org.apache.flink.runtime.state.ttl.AbstractTtlDecorator

config, original, returnExpired, timeProvider, ttl, updateTsOnRead

Constructor Summary

Constructors

Constructor	Description
TtlReduceFunction(org.apache.flink.api.common.functions.ReduceFunction<T> originalReduceFunction, org.apache.flink.api.common.state.StateTtlConfig config, TtlTimeProvider timeProvider)

Method Summary

Modifier and Type	Method	Description
TtlValue<T>	reduce(TtlValue<T> value1, TtlValue<T> value2)

Methods inherited from class org.apache.flink.runtime.state.ttl.AbstractTtlDecorator

expired, getElementWithTtlCheck, getUnexpired, getWithTtlCheckAndUpdate, getWrappedWithTtlCheckAndUpdate, rewrapWithNewTs, wrapWithTs

Methods inherited from class java.lang.Object

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

Constructor Details

TtlReduceFunction

public TtlReduceFunction(org.apache.flink.api.common.functions.ReduceFunction<T> originalReduceFunction,
 org.apache.flink.api.common.state.StateTtlConfig config,
 TtlTimeProvider timeProvider)

Method Details

reduce

public TtlValue<T> reduce(TtlValue<T> value1,
 TtlValue<T> value2)
                   throws Exception

Specified by:

reduce in interface org.apache.flink.api.common.functions.ReduceFunction<T>

Throws:

Exception