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https://issues.apache.org/jira/browse/FLINK-9514?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16518001#comment-16518001
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ASF GitHub Bot commented on FLINK-9514:
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GitHub user azagrebin opened a pull request:
https://github.com/apache/flink/pull/6186
[FLINK-9514,FLINK-9515,FLINK-9516] State ttl wrappers
## What is the purpose of the change
This PR introduces TTL logic wrappers for state objects.
## Brief change log
Added
- sketch of TtlConfig
- AbstractTtlWrapper and AbstractTtlState
- concrete TTL wrappers for state objects
## Verifying this change
Unit tests for state objects TTL wrappers
## Does this pull request potentially affect one of the following parts:
- Dependencies (does it add or upgrade a dependency): (no)
- The public API, i.e., is any changed class annotated with
`@Public(Evolving)`: (no)
- The serializers: (no)
- The runtime per-record code paths (performance sensitive): (no)
- Anything that affects deployment or recovery: JobManager (and its
components), Checkpointing, Yarn/Mesos, ZooKeeper: (no)
- The S3 file system connector: (no)
## Documentation
- Does this pull request introduce a new feature? (yes)
- If yes, how is the feature documented? (not applicable at this step)
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/azagrebin/flink FLINK-9515
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/flink/pull/6186.patch
To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:
This closes #6186
----
commit 62faa8ee220c21fa824fec690073c27a0a994be5
Author: Andrey Zagrebin <azagrebin@...>
Date: 2018-06-04T15:28:40Z
[FLINK-9514,FLINK-9515,FLINK-9516] State ttl wrappers
----
> 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
> Assignee: Andrey Zagrebin
> Priority: Major
> 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 from FLINK-9513
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