[
https://issues.apache.org/jira/browse/FLINK-18165?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17129148#comment-17129148
]
Congxian Qiu(klion26) commented on FLINK-18165:
-----------------------------------------------
[~liyu] I agree that we could switch state backend easily through savepoint if
this has been implemented. I'm willing to help implement this if we want to
support this in the future release.
> When savingpoint is restored, select the checkpoint directory and stateBackend
> ------------------------------------------------------------------------------
>
> Key: FLINK-18165
> URL: https://issues.apache.org/jira/browse/FLINK-18165
> Project: Flink
> Issue Type: Improvement
> Components: Runtime / State Backends
> Affects Versions: 1.9.0
> Environment: flink 1.9
> Reporter: Xinyuan Liu
> Priority: Major
>
> If the checkpoint file is used as the initial state of the savepoint startup,
> it must be ensured that the state backend used before and after is the same
> type, but in actual production, there will be more and more state, the
> taskmanager memory is insufficient and the cluster cannot be expanded, and
> the state backend needs to be switched at this time. And there is a need to
> ensure data consistency. Unfortunately, currently flink does not provide an
> elegant way to switch state backend, can the community consider this proposal
--
This message was sent by Atlassian Jira
(v8.3.4#803005)
