Andrey Zagrebin created FLINK-9514:
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Summary: Create wrapper with TTL logic for value state
Key: FLINK-9514
URL: https://issues.apache.org/jira/browse/FLINK-9514
Project: Flink
Issue Type: Sub-task
Components: State Backends, Checkpointing
Affects Versions: 1.6.0
Reporter: Andrey Zagrebin
Fix For: 1.6.0
TTL state decorator uses original state with packed TTL and add TTL logic using
time provider:
{code:java}
TtlValueState<V> implements ValueState<V> {
ValueState<TtlValue<V>> underlyingState;
InternalTimeService timeProvider;
V value() {
TtlValue<V> valueWithTtl = underlyingState.get();
// ttl logic here (e.g. update timestamp)
return valueWithTtl.getValue();
}
void update() { ... underlyingState.update(valueWithTtl) ... }
}
{code}
TTL decorators are apply to state produced by normal state binder in its TTL
wrapper
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