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https://issues.apache.org/jira/browse/HUDI-8409?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17904290#comment-17904290
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Lin Liu commented on HUDI-8409:
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So far I have tested the upgrade path. What I found is that:
# For MOR table, either we use `DefaultHoodieRecordPayload` or
`OverwriteWithLatestPayload`, it will be transformed into EventTimeOrdering
with `DefaultHoodieRecordPayload` payload.
# For COW table, even we use `OverwriteWithLatestPayload` class, the table
properties from 0.15.0 does not record this information. Therefore, after
upgraded to 1.0.0, it is treated as default.
> Ensure that upgrade and downgrade work with merging configs
> -----------------------------------------------------------
>
> Key: HUDI-8409
> URL: https://issues.apache.org/jira/browse/HUDI-8409
> Project: Apache Hudi
> Issue Type: Task
> Reporter: Jonathan Vexler
> Assignee: Lin Liu
> Priority: Blocker
> Fix For: 1.0.1
>
> Original Estimate: 6h
> Remaining Estimate: 6h
>
> Make sure that we are upgrading and downgrading correctly with the merge
> configs such as payload class and merge mode
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