[ https://issues.apache.org/jira/browse/FLINK-4620 ]
Hangxiang Yu deleted comment on FLINK-4620:
-------------------------------------
was (Author: masteryhx):
Close this as no intention in this direction just like FLINK-4511.
Considering current design of checkpoint and savepoint, I also think it's
better to implement this in the platform or like K8s operator which has
supported this [1].
Please reopen it if necessary.
[1]
[https://nightlies.apache.org/flink/flink-docs-release-1.17/docs/ops/state/checkpoints_vs_savepoints/]
[2]
[https://nightlies.apache.org/flink/flink-kubernetes-operator-docs-release-1.6/docs/custom-resource/job-management/#periodic-savepoint-triggering]
> Automatically creating savepoints
> ---------------------------------
>
> Key: FLINK-4620
> URL: https://issues.apache.org/jira/browse/FLINK-4620
> Project: Flink
> Issue Type: New Feature
> Components: Runtime / State Backends
> Affects Versions: 1.1.2
> Reporter: Niels Basjes
> Priority: Not a Priority
> Labels: auto-deprioritized-major, auto-deprioritized-minor
>
> In the current versions of Flink you can run an external command and then a
> savepoint is persisted in a durable location.
> Feature request: Make this a lot more automatic and easy to use.
> _Proposed workflow_
> # In my application I do something like this:
> {code}
> StreamExecutionEnvironment env =
> StreamExecutionEnvironment.getExecutionEnvironment();
> env.setStateBackend(new FsStateBackend("hdfs:///tmp/applicationState"));
> env.enableCheckpointing(5000, CheckpointingMode.EXACTLY_ONCE);
> env.enableAutomaticSavePoints(300000);
> env.enableAutomaticSavePointCleaner(10);
> {code}
> # When I start the application for the first time the state backend is
> 'empty'.
> I expect the system to start in a clean state.
> After 10 minutes (300000ms) a savepoint is created and stored.
> # When I stop and start the topology again it will automatically restore the
> last available savepoint.
> Things to think about:
> * Note that this feature still means the manual version is useful!!
> * What to do on startup if the state is incompatible with the topology? Fail
> the startup?
> * How many automatic savepoints to we keep? Only the last one?
> * Perhaps the API should allow multiple automatic savepoints at different
> intervals in different locations.
> {code}
> // Make every 10 minutes and keep the last 10
> env.enableAutomaticSavePoints(300000, new
> FsStateBackend("hdfs:///tmp/applicationState"), 10);
> // Make every 24 hours and keep the last 30
> // Useful for being able to reproduce a problem a few days later
> env.enableAutomaticSavePoints(86400000, new
> FsStateBackend("hdfs:///tmp/applicationDailyStateSnapshot"), 30);
> {code}
--
This message was sent by Atlassian Jira
(v8.20.10#820010)
