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https://issues.apache.org/jira/browse/HUDI-3304?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Jian Feng reassigned HUDI-3304:
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Assignee: Jian Feng
> support partial update on mor table
> ------------------------------------
>
> Key: HUDI-3304
> URL: https://issues.apache.org/jira/browse/HUDI-3304
> Project: Apache Hudi
> Issue Type: Improvement
> Reporter: Jian Feng
> Assignee: Jian Feng
> Priority: Major
> Attachments: image2022-1-13_0-33-5.png
>
>
> h2. current status
> * OverwriteNonDefaultsWithLatestAvroPayload implement partial update
> behavior in combineAndGetUpdateValue method
> * Spark sql also have a 'Merge into' syntax support partial update by
> ExpressionPayload,
> * both OverwriteNonDefaultsWithLatestAvroPayload and ExpressionPayload can
> not handle partial update in preCombine method, so they can only support
> partial update with COW table
> h2. solution
> !image2022-1-13_0-33-5.png|width=832,height=516!
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