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https://issues.apache.org/jira/browse/HUDI-2139?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Udit Mehrotra updated HUDI-2139:
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Status: In Progress (was: Open)
> MergeInto MOR Table May Result InCorrect Result
> -----------------------------------------------
>
> Key: HUDI-2139
> URL: https://issues.apache.org/jira/browse/HUDI-2139
> Project: Apache Hudi
> Issue Type: Bug
> Components: Spark Integration
> Reporter: pengzhiwei
> Assignee: pengzhiwei
> Priority: Major
> Labels: pull-request-available
> Fix For: 0.9.0
>
>
> Currently we process all the update-action and inert-action in the
> ExpressionPayload#
> getInsertValue without know whether the record is matched or not matched for
> MOR table. This may result in incorrect merge result. e.g.
> {code:java}
> Merge into h0
> using (select 2 as id, 'a1' as name, 10 as price from s) s0
> on h0.id = s0.id
> when matched then s0.id = 1 the update set id = s0.id, name = s0.name, price
> = 10
> when not matched then s0.id = 2 the insert (id,name,price) values(id,name,
> 20){code}
> If the id = 2 can matched the target table h0, but it cannot match the
> udpate-condition ( s0.id = 1), It should not update the table. However,
> currently we cannot know the matched state of the input record, it will goes
> to the not-matched actions and update the price to 20 finally. This is
> incorrect.
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