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https://issues.apache.org/jira/browse/HUDI-8828?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17910409#comment-17910409
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Davis Zhang commented on HUDI-8828:
-----------------------------------
PR adding all necessary tests:
[https://github.com/apache/hudi/pull/12583]
Found NPE issues.
https://issues.apache.org/jira/browse/HUDI-8834
https://issues.apache.org/jira/browse/HUDI-8835
Partial update like
```
merge into t using s
on t.primaryKey=s.primaryKey
when matched then update set t.c1=s.c1
```
where the update clause only covers some of the columns of the target table
(primary key column are not mandatory to show up in that clause). It would have
issues as above.
> merge into partial update on all kinds of table should work
> -----------------------------------------------------------
>
> Key: HUDI-8828
> URL: https://issues.apache.org/jira/browse/HUDI-8828
> Project: Apache Hudi
> Issue Type: Sub-task
> Reporter: Davis Zhang
> Assignee: Davis Zhang
> Priority: Blocker
> Labels: pull-request-available
> Fix For: 1.0.1
>
> Original Estimate: 4h
> Remaining Estimate: 4h
>
> MOR, COW, partitioned, non partitioned, with without precombine key.
> Global/local index.
> 0.5 days for testing + unknowns if issues spotted.
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