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https://issues.apache.org/jira/browse/FLINK-25360?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17463561#comment-17463561
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刘方奇 commented on FLINK-25360:
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[~yunta] THX for your reply. We use state-processor-api to transform state
now, but we find that we can not even build the state desc in any way. It seems
like not friendly.
# we can only get the typeSerializers or something that can not help we build
a state desc (AggregatingStateDescriptor need the aggFunction).
# even we just get the above, we can not get it easily, cause most of these
are stored in the state file.
I think now the checkpoint meta do not have the power of self-described.
> Add State Desc to CheckpointMetadata
> ------------------------------------
>
> Key: FLINK-25360
> URL: https://issues.apache.org/jira/browse/FLINK-25360
> Project: Flink
> Issue Type: Improvement
> Components: Runtime / Checkpointing, Runtime / State Backends
> Reporter: 刘方奇
> Priority: Major
> Attachments: image-2021-12-17-20-01-42-423.png
>
>
> Now we can't get the State Descriptor info in the checkpoint meta. Like the
> case if we use state-processor-api to load state then rewrite state, we can't
> flexible use the state.
> Maybe there are other cases we need the State Descriptor, so can we add this
> info?
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