[
https://issues.apache.org/jira/browse/FLINK-23252?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Roman Khachatryan updated FLINK-23252:
--------------------------------------
Description:
Recovery from savepoint already works:
* changelog off -> on: FLINK-23278
* changelog on -> off: directly calling
{{underlyingBackend.}}{{savepoint}}{{()}} (instead of {{writer.persist()}})
For checkpoints, changelog on -> off doesn't work. Regular state backend will
receive materialized and non-aterialized state on recovery. To support it,
state changes have to be applied on recovery even if changelog backend is
disabled.
was:
Currently, recovery from savepoint with changelog.enabled altered is not
supported (an exception will be thrown because of wrong state handle type).
It can be implemented by: * {{disabled -> enabled}} : load materialized state
with empty non-materialized
* {{enabled -> disabled}}: in {{changelog.snapshot()}} , call
{{underlyingBackend.snapshot()}} (instead of {{writer.persist()}}) if savepoint
> Support recovery after disabling changelog backend
> --------------------------------------------------
>
> Key: FLINK-23252
> URL: https://issues.apache.org/jira/browse/FLINK-23252
> Project: Flink
> Issue Type: Sub-task
> Components: Runtime / State Backends
> Reporter: Roman Khachatryan
> Priority: Major
> Fix For: 1.14.0
>
>
> Recovery from savepoint already works:
> * changelog off -> on: FLINK-23278
> * changelog on -> off: directly calling
> {{underlyingBackend.}}{{savepoint}}{{()}} (instead of {{writer.persist()}})
> For checkpoints, changelog on -> off doesn't work. Regular state backend will
> receive materialized and non-aterialized state on recovery. To support it,
> state changes have to be applied on recovery even if changelog backend is
> disabled.
--
This message was sent by Atlassian Jira
(v8.3.4#803005)
