[jira] [Updated] (HUDI-3304) support partial update on mor table

["Raymond Xu (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/HUDI-3304?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Raymond Xu updated HUDI-3304:
-----------------------------
    Priority: Blocker  (was: Major)

> support partial update on mor table 
> ------------------------------------
>
>                 Key: HUDI-3304
>                 URL: https://issues.apache.org/jira/browse/HUDI-3304
>             Project: Apache Hudi
>          Issue Type: New Feature
>          Components: writer-core
>            Reporter: Jian Feng
>            Assignee: Jian Feng
>            Priority: Blocker
>              Labels: pull-request-available
>             Fix For: 0.12.0
>
>         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
> make preCombine function also support partial update(need pass schema as parameter)
> !image2022-1-13_0-33-5.png|width=832,height=516!



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