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https://issues.apache.org/jira/browse/FLINK-28350?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17561398#comment-17561398
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Gyula Fora commented on FLINK-28350:
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This can also have the outcome that we should not allow rollbacks during flink
version upgrades which should also be treated as part of this ticket
> Test last-state upgrades across Flink minor versions
> ----------------------------------------------------
>
> Key: FLINK-28350
> URL: https://issues.apache.org/jira/browse/FLINK-28350
> Project: Flink
> Issue Type: Improvement
> Components: Kubernetes Operator
> Reporter: Gyula Fora
> Priority: Critical
> Fix For: kubernetes-operator-1.1.0
>
>
> Since the operator relies on the HA metadata for last-state upgrades we
> should make sure that it is possible to upgrade between Flink versions using
> that.
> In some cases due to the HA format changes it might not be possible, if so we
> should force SAVEPOINT upgrade in those cases
> cc [~wangyang0918]
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